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213 results on '"Stijn, Buitink"'

1. Radiofrequency ice dielectric measurements at Summit Station, Greenland

Author: Juan Antonio Aguilar, Patrick Allison, Dave Besson, Abby Bishop, Olga Botner, Sjoerd Bouma, Stijn Buitink, Maddalena Cataldo, Brian A. Clark, Kenny Couberly, Zach Curtis-Ginsberg, Paramita Dasgupta, Simon de Kockere, Krijn D. de Vries, Cosmin Deaconu, Michael A. DuVernois, Anna Eimer, Christian Glaser, Allan Hallgren, Steffen Hallmann, Jordan Christian Hanson, Bryan Hendricks, Jakob Henrichs, Nils Heyer, Christian Hornhuber, Kaeli Hughes, Timo Karg, Albrecht Karle, John L. Kelley, Michael Korntheuer, Marek Kowalski, Ilya Kravchenko, Ryan Krebs, Robert Lahmann, Uzair Latif, Joseph Mammo, Matthew J. Marsee, Zachary S. Meyers, Kelli Michaels, Katharine Mulrey, Marco Muzio, Anna Nelles, Alexander Novikov, Alisa Nozdrina, Eric Oberla, Bob Oeyen, Ilse Plaisier, Noppadol Punsuebsay, Lilly Pyras, Dirk Ryckbosch, Olaf Scholten, David Seckel, Mohammad Ful Hossain Seikh, Daniel Smith, Jethro Stoffels, Daniel Southall, Karen Terveer, Simona Toscano, Delia Tosi, Dieder J. Van Den Broeck, Nick van Eijndhoven, Abigail G. Vieregg, Janna Z. Vischer, Christoph Welling, Dawn R. Williams, Stephanie Wissel, Robert Young, and Adrian Zink
Subjects: Arctic glaciology, ice physics, radio-echo sounding, Environmental sciences, GE1-350, Meteorology. Climatology, QC851-999
Abstract: We recently reported on the radio-frequency attenuation length of cold polar ice at Summit Station, Greenland, based on bi-static radar measurements of radio-frequency bedrock echo strengths taken during the summer of 2021. Those data also allow studies of (a) the relative contributions of coherent (such as discrete internal conducting layers with sub-centimeter transverse scale) vs incoherent (e.g. bulk volumetric) scattering, (b) the magnitude of internal layer reflection coefficients, (c) limits on signal propagation velocity asymmetries (‘birefringence’) and (d) limits on signal dispersion in-ice over a bandwidth of ~100 MHz. We find that (1) attenuation lengths approach 1 km in our band, (2) after averaging 10 000 echo triggers, reflected signals observable over the thermal floor (to depths of ~1500 m) are consistent with being entirely coherent, (3) internal layer reflectivities are ≈–60$\to$–70 dB, (4) birefringent effects for vertically propagating signals are smaller by an order of magnitude relative to South Pole and (5) within our experimental limits, glacial ice is non-dispersive over the frequency band relevant for neutrino detection experiments.
Published: 2023
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2. Detection of ultra high energy cosmic rays and neutrinos with lunar orbital radio telescope

Author: Linjie Chen, Marc Klein Wolt, Amin Aminaei, Stijn Buitink, and Heino Falcke
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Particle cascades induced by ultra-high-energy (UHE) cosmic rays and neutrinos impacting on the lunar regolith usually radiate Cherenkov radio emissions due to the presence of excess negative charge, which is known as Askaryan effect. Several experiments have been carried out to detect the Cherenkov radio emissions in the lunar regolith. To prepare for future lunar Ultra-Long Wavelength (ULW, frequencies below 30 MHz) radio astronomy missions, we study the detection of the Cherenkov radio emissions with the ULW radio telescope that are operating at the lunar orbit. We have carried out instrument modelling and analytic calculations for the analysis of aperture, flux and event rate, and the analyses show the detectability of the Cherenkov radiation. Based on the properties of the Cherenkov radiation, we have demonstrated that the cosmic ray and neutrino events could be reconstructed with the three ULW vector antennas onboard the lunar satellites via measurements of the Askaryan radio pulse intensity, polarizations, etc. The results obtained by this study would be useful for future lunar radio explorer mission, where the detections of UHE cosmic rays and neutrinos could be successfully attempted.
Published: 2023
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3. Propagating air shower radio signals to in-ice antennas

Author: Uzair Abdul Latif, Simon De Kockere, Krijn de Vries, Tim Huege, Dieder Van den Broeck, and Stijn Buitink
Published: 2023
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4. The propagation and 3D VHF polarization properties of recoil leaders

Author: Brian Hare, Olaf Scholten, Stijn Buitink, Joseph Dwyer, Ningyu Liu, Chris Sterpka, and Sander ter Veen
Abstract: Lightning dart and recoil leaders are difficult to understand, as they have a different (often smoother) propagation mode than stepped leaders, and re-ionize a previously ionized channel. In order to understand them better, we have imaged recoil leaders with the LOFAR radio telescope (30-80 MHz), and will present 3D polarization, speed, and intensity data from multiple recoil leaders. We will show that many recoil leaders with high VHF intensity have VHF polarization that is very parallel to the recoil leader channel, with an opening angle as small as 15 degrees. Recoil leaders with lower VHF intensity have larger polarization opening angles, but it is not clear if this is physical or instrumental. In addition, VHF emission from recoil leaders comes from a sub-meter thin channel. Finally, we will show that the propagation speed and VHF intensity are strongly correlated; almost following a power-law or exponential relationship. These results probe the streamer behavior of recoil leaders, and thus provide significant clues to how recoil and dart leaders propagate. The fact that recoil leaders are very VHF thin is consistent with small polarization opening angles, and demonstrates that recoil leaders have significant streamer activity in their core and their corona sheath is VHF silent. The power-law/exponential relationship between speed and VHF intensity, however, is very difficult to explain.
Published: 2023
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5. The NuMoon experiment: Lunar detection of cosmic rays utrinos with LOFAR

Author: G. K. Krampah, Godwin K. Krampah, Brian Hare, Stijn Buitink, Sander ter Veen, Arthur Corstanje, Jörg P. Rachen, Olaf Scholten, Jörg R. Hörandel, T. N. G. Trinh, A. Nelles, Satyendra Thoudam, Pragati Mitra, Kathrine Mulrey, Tim Huege, Tobias Winchen, Hershel Pandya, and Heino Falcke
Subjects: Physics, Astronomy, Cosmic ray, LOFAR, Neutrino
Abstract: Contains fulltext : 236332.pdf (Publisher’s version ) (Open Access)
Published: 2022

6. Probing hadronic interactions using the latest data measured by the Pierre Auger Observatory

Author: Caterina Trimarelli, Pedro Abreu, Marco Aglietta, Ingomar Allekotte, Kévin Almeida Cheminant, Alejandro Almela, Jaime Alvarez-Muniz, Juan Ammerman Yebra, Gioacchino Alex Anastasi, Luis A. Anchordoqui, Belén Andrada, Sofia Andringa, Carla Aramo, Paulo Ricardo Araújo Ferreira, Enrico Arnone, Juan Carlos Arteaga Velazquez, Hernán Gonzalo Asorey, Pedro Assis, Gualberto Avila, Emanuele Avocone, Alina Mihaela Badescu, Alena Bakalova, Alexandru Balaceanu, Felicia Barbato, Jose A. Bellido, Corinne Berat, Mario Edoardo Bertaina, Gopal Bhatta, Peter L. Biermann, Virginia Binet, Kathrin Bismark, Teresa Bister, Jonathan Biteau, Jiri Blazek, Carla Bleve, Johannes Blümer, Martina Bohacova, Denise Boncioli, Carla Bonifazi, Luan Bonneau Arbeletche, Nataliia Borodai, Jeffrey Brack, Thomas Bretz, P. Gabriel Brichetto Orchera, Florian Lukas Briechle, Peter Buchholz, Antonio Bueno, Stijn Buitink, Mario Buscemi, Max Büsken, Anthony Bwembya, Karen S. Caballero-Mora, Lorenzo Caccianiga, Ioana Caracas, Rossella Caruso, Antonella Castellina, Fernando Catalani, Gabriella Cataldi, Lorenzo Cazon, Marcos Cerda, Jose Augusto Chinellato, Jiří Chudoba, Ladislav Chytka, Roger W Clay, Agustín Cobos Cerutti, Roberta Colalillo, Alan Coleman, Maria Rita Coluccia, Rúben Conceição, Antonio Condorelli, Giovanni Consolati, Fernando Contreras, Fabio Convenga, Diego Correia dos Santos, Corbin Covault, Markus Cristinziani, Sergio Dasso, Kai Daumiller, Bruce R. Dawson, Jarryd A. Day, Rogerio M. de Almeida, Joaquin de Jesus, Sijbrand J. de Jong, João de Mello Neto, Ivan De Mitri, Jaime de Oliveira, Danelise de Oliveira Franco, Francesco de Palma, Vitor de Souza, Emanuele De Vito, Antonino Del Popolo, Olivier Deligny, Luca Deval, Armando di Matteo, Madalina Dobre, Carola Dobrigkeit, Juan Carlos D'Olivo, Luis Miguel Domingues Mendes, Rita Cassia dos Anjos, Maria Teresa Dova, Jan Ebr, Mohamed Eman, Ralph Engel, Italo Epicoco, Martin Erdmann, Carlos O. Escobar, Alberto Etchegoyen, Heino Falcke, John Farmer, Glennys R. Farrar, Anderson Campos Fauth, Norberto Fazzini, Fridtjof Feldbusch, Francesco Fenu, Brian Fick, Juan Manuel Figueira, Andrej Filipcic, Thomas Fitoussi, Tomáš Fodran, Toshihiro Fujii, Alan Fuster, Cristina Galea, Claudio Galelli, Beatriz García, Hartmut Gemmeke, Flavia Gesualdi, Alexandru Gherghel-Lascu, Piera Luisa Ghia, Ugo GIACCARI, Marco Giammarchi, Jonas Glombitza, Fabian Gobbi, Fernando Gollan, Geraldina Golup, Mariano Gómez Berisso, Primo F. Gómez Vitale, Juan Pablo Gongora, Juan Manuel González, Nicolas Martin Gonzalez, Isabel Goos, Dariusz Gora, Alessio Gorgi, Marvin Gottowik, Trent D. Grubb, Fausto Guarino, Germano Guedes, Eleonora Guido, Steffen Traugott Hahn, Petr Hamal, Matías Rolf Hampel, Patricia María Hansen, Diego Harari, Violet M. Harvey, Andreas Haungs, Thomas Hebbeker, Dieter Heck, Carlos Hojvat, Jörg R. Hörandel, Pavel Horvath, Miroslav Hrabovsky, Tim Huege, Antonio Insolia, Paula Gina Isar, Petr Janecek, Jeffrey A. Johnsen, Jakub Jurysek, Alex Kääpä, Karl-Heinz Kampert, Bianca Keilhauer, Abha Khakurdikar, Varada Varma Kizakke Covilakam, Hans Klages, Matthias Kleifges, Jonny Kleinfeller, Felix Knapp, Norbert Kunka, Bruno L. Lago, Niklas Langner, Marcelo Augusto Leigui de Oliveira, Vladimir Lenok, Antoine Letessier-Selvon, Isabelle Lhenry-Yvon, Domenico Lo Presti, Luis LOPES, Rebeca López, Lu Lu, Quentin Luce, Jon Paul Lundquist, Allan Machado Payeras, Giovanni Mancarella, Dusan Mandat, Bradley C. Manning, Julien Manshanden, Paul Mantsch, Sullivan Marafico, Federico Maria Mariani, Analisa Mariazzi, Ioana Maris, Giovanni Marsella, Daniele Martello, Sara Martinelli, Oscar Martínez Bravo, Miguel Alexandre Martins, Massimo Mastrodicasa, Hermann-Josef Mathes, James Matthews, Giorgio Matthiae, Eric William Mayotte, Sonja Mayotte, Peter Mazur, Gustavo Medina-Tanco, Diego Melo, Alexander Menshikov, Stanislav Michal, Maria Isabel Micheletti, Lino Miramonti, Silvia Mollerach, François Montanet, Leonel Morejon, Carlo Morello, Ana L. Müller, Katharine Mulrey, Roberto Mussa, Marco Stein Muzio, Wilson M. Namasaka, Alina Nasr-Esfahani, Lukas Nellen, Gabriela Nicora, Mihai Niculescu-Oglinzanu, Marcus Niechciol, Dave Nitz, Ian Norwood, Dalibor Nosek, Vladimír Novotný, Libor Nozka, Achille Nucita, Luis A. Nunez, Cainã Oliveira, Miroslav Palatka, Juan Pallotta, Gonzalo Parente, Alejandra Parra, Jannis Pawlowsky, Miroslav Pech, Jan Pękala, Rodrigo Pelayo, Edyvania Emily Pereira Martins, Johnnier Perez Armand, Carmina Pérez Bertolli, Lorenzo Perrone, Sergio Petrera, Camilla Petrucci, Tanguy Pierog, Mário Pimenta, Manuel Platino, Bjarni Pont, Mart Pothast, Paolo Privitera, Michael Prouza, Andrew Puyleart, Sven Querchfeld, Julian Rautenberg, Diego Ravignani, Maximilian Reininghaus, Jan Ridky, Felix Riehn, Markus Risse, Vincenzo Rizi, Washington Rodrigues de Carvalho, Jorge Rubén Rodriguez Rojo, Matías J. Roncoroni, Simone Rossoni, Markus Roth, Esteban Roulet, Adrian Rovero, Philip Ruehl, Alexandra Saftoiu, Mohit Saharan, Francesco Salamida, Humberto Ibarguen Salazar, Gaetano Salina, Jose Sanabria Gomez, Federico Andrés Sánchez, Edivaldo Moura Santos, Eva Santos, Fred Sarazin, Raul Sarmento, Ricardo Sato, Pierpaolo Savina, Christoph M. Schäfer, Viviana Scherini, Harald Schieler, Martin Schimassek, Michael Schimp, Felix Schlüter, David Schmidt, Olaf Scholten, Harm Schoorlemmer, Petr Schovanek, Frank G. Schröder, Josina Schulte, Tobias Schulz, Sergio J Sciutto, Marina Scornavacche, Alberto Segreto, Srijan Sehgal, Shima Ujjani Shivashankara, Guenter Sigl, Gaia Silli, Octavian Sima, Raluca Smau, Radomir Smida, Paul Sommers, Jorge F. Soriano, Ruben Squartini, Maximilian Stadelmaier, Denis Stanca, Samo Stanič, Jaroslaw Stasielak, Patrick Stassi, Maximilian Straub, Alexander Streich, Mauricio Suárez-Durán, Tristan Sudholz, Tiina Suomijarvi, A. Daniel Supanitsky, Zbigniew Szadkowski, Alex Tapia, Carla Taricco, Charles Timmermans, Olena Tkachenko, Petr Tobiska, Carlos J. Todero Peixoto, Bernardo Tomé, Zoé Torrès, Andres Travaini, Petr Travnicek, Matias Jorge Tueros, Ralf Ulrich, Michael Unger, Lukáš Vaclavek, Martin Vacula, Jose F. Valdés Galicia, Laura Valore, Enrique Varela, Adriana Vásquez-Ramírez, Darko Veberic, Cynthia Ventura, Indira D. Vergara Quispe, Valerio Verzi, Jakub Vicha, Jacco Vink, Serguei Vorobiov, Hernan Wahlberg, Clara Keiko Oliveira Watanabe, Alan Watson, Andreas Weindl, Lawrence Wiencke, Henryk Wilczyński, David Wittkowski, Brian Wundheiler, Alexey Yushkov, Orazio Zapparrata, Enrique Zas, Danilo Zavrtanik, Marko Zavrtanik, and Lukas Zehrer
Published: 2022
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7. The 3D Polarization of Recoil Leaders

Author: Brian Hare, Olaf Scholten, Joseph Dwyer, Ningyu Liu, Chris Strepka, Stijn Buitink, and Sander ter Veen
Abstract: We have recently developed a new 3D beamforming algorithm, using data from the LOw Frequency ARray (LOFAR) radio telescope (in the 30-80 MHz band), that is capable of resolving even the most complex lightning phenomena with meter and nanosecond scale accuracy. Because it operates in full 3D, this algorithm inherently extracts and accounts for the 3D polarization of the VHF sources. Here we demonstrate the full power of this technique by extracting the full 3D polarization of multiple sections of recoil leaders. We confirm previous work that showed that recoil leaders have significant polarization perpendicular to the lightning channel, likely due to charge flow between the lightning channel core and corona sheath. However, we also show that recoil leaders can also have significant polarization parallel to the channel as well. In addition, we show that the ratio of parallel-to-perpendicular polarization is strongly correlated with faster and more intensely emitting recoil leaders. We will argue that this could be due to faster recoils causing the electric field parallel to the channel to change more rapidly, and if the electric field changes rapidly enough than the recoil leader can create streamers parallel to the lightning channel which are much more strongly emitting than streamers perpendicular to the lightning channel.
Published: 2022
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8. A range of different negative leader propagation modes as imaged with LOFAR

Author: Olaf Scholten, Brian Hare, Joe Dwyer, Ningyu Liu, Chris Sterpka, Stijn Buitink, and Sander ter Veen
Abstract: We have developed a time-resolved interferometric imaging in 3D (TRI-D) method for LOFAR data where the signals of 400 individual antennas are added coherently. This allows us to reach an even better resolution in 3D than with our original impulsive imager (based on a time-of-arrival-difference method and reaching a meter scale resolution) and still have a time resolution close to the impulse-response time of our system (25 ns).After a short outline of the TRI-D technique we show that with this new imaging technique we can resolve the fine dynamics in the different negative leader propagations modes, varying from normal negative leaders with a stepping distance of the order of a few tens of meters to negative leaders at altitudes above 7 km that propagate with steps of a few hundred meter to Intensely Radiating Negative Leaders that propagate as a broad front with an area of up to km^2 over distances of a few kilometers.
Published: 2022
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9. Results on mass composition of cosmic rays as measured with LOFAR

Author: Stijn Buitink, Katie Mulrey, Tobias Winchen, Arthur Corstanje, Heino Falcke, Anna Nelles, H. Pandya, Gia Trinh, Jörg P. Rachen, Jörg R. Hörandel, Olaf Scholten, G. K. Krampah, Pragati Mitra, Brian Hare, Tim Huege, Sander ter Veen, and Satyendra Thoudam
Subjects: Physics, Particle physics, Astronomy, Cosmic ray, LOFAR, Mass composition, Standard deviation, law.invention, Telescope, Distribution (mathematics), law, Range (statistics), ddc:530, Energy (signal processing)
Abstract: We present an updated analysis of the mass composition of cosmic rays in the energy range of $10^{16.8}$ to $10^{18.3}$ eV. It is based on measurements with the LOFAR telescope of the depth of shower maximum, $X_{\rm max}$. We review the improvements to the simulation-based reconstruction setup, as well as the selection method to obtain a minimally biased $X_{\rm max}$ dataset. Results include estimates of the mean and standard deviation of the $X_{\rm max}$ distribution. A statistical analysis at distribution level has been done as well, using a four-component model of light to heavy nuclei. It confirms our previous results showing a significant low-mass fraction in this energy range. The radio technique has advanced enough that multiple observatories are publishing results on $X_{\rm max}$. As the array layouts and methods vary, it is interesting to compare the approaches, in light of the observed differences in the $X_{\rm max}$ results. We therefore show additional information on bias tests used in the $X_{\rm max}$ reconstruction and sample selection process.
Published: 2022
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10. Performance of SKA as an air shower observatory

Author: Katharine Mulrey, Anna Nelles, Heino Falcke, Brian Hare, H. Pandya, Sander ter Veen, C. W. James, Satyendra Thoudam, Gia Trinh, Tim Huege, Pragati Mitra, Stijn Buitink, G. K. Krampah, Arthur Corstanje, Jörg P. Rachen, Jörg R. Hörandel, Tobias Winchen, and Olaf Scholten
Subjects: Physics, Antenna array, Range (particle radiation), Air shower, Duty cycle, Observatory, Astronomy, Detector, ddc:530, LOFAR, Energy (signal processing)
Abstract: The low frequency segment of SKA in Australia will have an extremely dense antenna array spanning an area of roughly 0.5 km$^2$. It offers unique possibilities for high‐resolution observations of air showers. Compared to LOFAR, it will have a much more homogeneous ground coverage, an increased frequency bandwidth (50-350 MHz), and the possibility to continuously observe with nearly 100% duty cycle. SKA will observe air showers in the range 10$^{16}$ eV - 10$^{18}$ eV with a reconstruction resolution on \xmax\ of around 10 g/cm$^2$. This allows for a high‐precision study of mass composition in the energy regime where a transition is expected from Galactic to extragalactic origin. In addition, SKA will be able to put constraints on hadronic interaction models, which is crucial for interpreting the data in this complex energy range. In this talk, we will show the results of a full detector simulation and demonstrate the capabilities of SKA, including energy and Xmax reconstruction, as well as more advanced methods to constrain the shape of the longitudinal development of air showers.
Published: 2022

11. Extraction of the Muon Signals Recorded with the Surface Detector of the Pierre Auger Observatory Using Recurrent Neural Networks

Author: Jose Chinellato, Marvin Gottowik, Dariusz Gora, Eric Mayotte, A. Gorgi, M. Gómez Berisso, Alan Coleman, S. J. Saffi, Ioana Caracas, R. C. Shellard, R.J. Barreira Luz, Miroslav Pech, M. Pothast, Pavel Horvath, A. Letessier-Selvon, Mario Buscemi, G. De Mauro, A. Tapia, Jörg R. Hörandel, I. Lhenry-Yvon, P. Ruehl, L. Valore, H. Gemmeke, Lorenzo Cazon, C. Pérez Bertolli, M. Suárez-Durán, M. Unger, E. M. Santos, Sullivan Marafico, Clara Keiko Oliveira Watanabe, Serguei Vorobiov, Marco Giammarchi, Jon Paul Lundquist, A. Menshikov, R. Alves Batista, Bruce R. Dawson, F. Pedreira, Sofia Andringa, Julien Manshanden, Andres Travaini, E. Varela, J.D. Sanabria Gomez, Roberto Mussa, Frank G. Schröder, P.O. Mazur, Marina Scornavacche, Jonathan Biteau, F. Salamida, A. Yushkov, Paul Sommers, Maximilian Reininghaus, Raul Sarmento, Felix Schlüter, Fabian Gobbi, Ioana Codrina Maris, Violet M. Harvey, D. Harari, Martina Bohacova, G. P. Guedes, Toshihiro Fujii, Jakub Juryšek, John Farmer, D. Nitz, G. Cataldi, V. Scherini, J. Rautenberg, M. Risse, Jonathan Blazek, Q. Luce, Juan Pablo Gongora, Alena Bakalova, K. Choi, Esteban Roulet, D. Melo, M. Schimp, H. J. Mathes, A. Puyleart, Stanislav Michal, Corinne Berat, M. Giller, Orazio Zapparrata, B. C. Manning, Marcio Aparecido Muller, Maria-Teresa Dova, Markus Roth, R. Sato, Lourenco Lopes, P. Abreu, D. Ravignani, G. Golup, N. Kunka, T. Bister, Maria Rita Coluccia, G. C. Hill, Maximilian Stadelmaier, J. F. Valdés Galicia, I. De Mitri, N. Fazzini, Petr Hamal, Ana Martina Botti, Francesco Fenu, Steffen Hahn, Juan Carlos D'Olivo, T. Pierog, Antonio Condorelli, Alina Mihaela Badescu, Cristina Galea, Jonas Glombitza, F. C. T. Barbato, M. Prouza, Justin M. Albury, P. L. Ghia, L. R. Wiencke, S. Schröder, Niklas Langner, Italo Epicoco, G. Parente, Fabrizia Canfora, Jose J. Gonzalez, Dusan Mandat, Ralph Engel, J. Ridky, J. Rodriguez Rojo, Fridtjof Feldbusch, Enrique Zas, Lorenzo Caccianiga, L. Zehrer, Thomas Hebbeker, M. A. Leigui de Oliveira, Sergio Dasso, Tristan Sudholz, M. I. Micheletti, J. Chudoba, F. Riehn, Carola Dobrigkeit, M. Muzio, V. Novotny, A.L. Garcia Vegas, C. M. Schäfer, Marcel Köpke, M. Platino, François Montanet, A. Insolia, M. Kleifges, D. Zavrtanik, Fernando Contreras, Valerio Verzi, B. Tome, Martín Miguel Freire, Rossella Caruso, B. L. Lago, A. Lucero, Fernando Catalani, Bjarni Pont, E.E. Pereira Martins, J. de Oliveira, J. Pȩkala, Alejandro Almela, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, Brian Fick, Josina Schulte, V. Pirronello, C. J.W.P. Timmermans, Martin Vacula, Julian Kemp, Philipp Papenbreer, Rúben Conceição, M. E. Bertaina, Alan Watson, M. Perlin, Mihai Niculescu-Oglinzanu, L. Bonneau Arbeletche, G. Marsella, Petr Travnicek, Paula Gina Isar, Peter Hansen, W. M. Namasaka, M. Mastrodicasa, Carla Bleve, Rodrigo Guedes Lang, David Wittkowski, Lukáš Vaclavek, Belén Andrada, A. C. Rovero, Eleonora Guido, G. Mancarella, Jesús Peña-Rodríguez, B. Keilhauer, G. Salina, Olivier Deligny, Trent D. Grubb, F. Guarino, John Matthews, Peter Buchholz, Heino Falcke, Alexandru Balaceanu, Vladimir Lenok, P. Tobiska, L. Perrone, Alex Kääpä, Magdalena Cerdá, Juan Manuel Figueira, Roberta Colalillo, Carla Aramo, Matías J. Roncoroni, S. J. Sciutto, R.C. dos Anjos, A. G. Mariazzi, Adriana Vásquez-Ramírez, Vincenzo Rizi, Julien Souchard, D. Martello, J. Vicha, Hernán Asorey, A. Di Matteo, Juan Miguel Carceller, Silvia Mollerach, Flavia Gesualdi, Tomáš Fodran, Alina Nasr-Esfahani, M. Palatka, Xavier Bertou, Marco Aglietta, O. Martínez Bravo, B. Wundheiler, A. Zepeda, Miroslav Hrabovský, Pedro Assis, H. Martinez, A. Etchegoyen, Jeffrey A. Johnsen, L. Lu, H. Schieler, Ugo Giaccari, N. González, A. Segreto, J. F. Soriano, Günter Sigl, Antonella Castellina, A. Haungs, P. Stassi, Radomir Smida, A. Machado Payeras, Thomas Bretz, Gaia Silli, A. Filipčič, Kai Daumiller, F. Sanchez, Petr Janecek, Corbin Covault, F. Sarazin, Srijan Sehgal, Matías Rolf Hampel, Fernando Gollan, S. Petrera, Marc Weber, F. de Palma, P. Mantsch, Lino Miramonti, V. de Souza, D. de Oliveira Franco, G. Matthiae, Z. Szadkowski, Christian Sarmiento-Cano, P. Savina, W. Rodrigues de Carvalho, Antonio Bueno, G. Farrar, T. Huege, Jeffrey Brack, Olaf Scholten, Humberto Ibarguen Salazar, R. M. de Almeida, Gualberto Avila, Octavian Sima, Nataliia Borodai, Miguel Mostafa, A. Fuster, Samo Stanič, D. Lo Presti, D. Correia dos Santos, Isabel Goos, D. Heck, Rodrigo Pelayo, S. J. De Jong, L. Nellen, L. Anchordoqui, A. Taboada, Stijn Buitink, Katie Mulrey, M. del Río, Jarryd A. Day, A. Saftoiu, P.F. Gómez Vitale, C. Morello, A.C. Cobos Cerutti, T. Suomijärvi, D. Nosek, E. Santos, J. Pallotta, J. R. T. de Mello Neto, A. Weindl, Peter L. Biermann, David Schmidt, Paolo Privitera, Hernan Wahlberg, Darko Veberič, A. Parra, M. Schimassek, C. Hojvat, Jan Ebr, Jacco Vink, H.O. Klages, M. Trini, A. A. Nucita, J. Kleinfeller, Carlos Escobar, Kevin-Druis Merenda, A.D. Supanitsky, P.G. Brichetto Orchera, I. Allekotte, A. C. Fauth, Carla Bonifazi, Jose A. Bellido, Fabio Convenga, I.D. Vergara Quispe, J. Stasielak, K.-H. Becker, M. Pimenta, Denise Boncioli, P.R. Araújo Ferreira, Tobias Winchen, Florian Lukas Briechle, A. Aab, K. H. Kampert, J. C. Arteaga Velázquez, J. Perez Armand, Carla Taricco, C. Trimarelli, Matias Tueros, Claudio Galelli, B. García, R. López, Karen S. Caballero-Mora, Luis A. Nunez, Marcus Niechciol, Martin Erdmann, J. de Jesús, A. Streich, Gioacchino Alex Anastasi, M. Wirtz, Roger W Clay, S. Querchfeld, Olena Tkachenko, J. Šupík, Carlo Ventura, Ladislav Chytka, J. Hulsman, R. Squartini, Alfred Müller, G. Medina-Tanco, M. Zavrtanik, E. De Vito, Giovanni Consolati, C. J. Todero Peixoto, Petr Schovanek, Denis Stanca, H. Wilczyński, Ralf Ulrich, L. Nožka, Physics, Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez-Muniz, J., Batista, R. A., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Ferreira, P. R. A., Velazquez, J. C. A., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Luz, R. J. B., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blazek, J., Bleve, C., Bohacova, M., Boncioli, D., Bonifazi, C., Arbeletche, L. B., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Orchera, P. G. B., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cerutti, A. C. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceicao, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., dos Santos, D. C., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jesus, J., de Jong, S. J., de Mauro, G., de Mello Neto, J. R. T., de Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Palma, F., de Souza, V., de Vito, E., del Rio, M., Deligny, O., Di Matteo, A., Dobrigkeit, C., D'Olivo, J. C., dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipcic, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., Garcia, B., Vegas, A. L. G., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Berisso, M. G., Vitale, P. F. G., Gongora, J. P., Gonzalez, J. M., Gonzalez, N., Goos, I., Gora, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Hamal, P., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Horandel, J. R., Horvath, P., Hrabovsky, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Janecek, P., Johnsen, J. A., Jurysek, J., Kaapa, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Kopke, M., Kunka, N., Lago, B. L., Lang, R. G., Langner, N., de Oliveira, M. A. L., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., Lopez, R., Lu, L., Luce, Q., Lucero, A., Lundquist, J. P., Payeras, A. M., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Maris, I. C., Marsella, G., Martello, D., Martinez, H., Bravo, O. M., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mollerach, S., Montanet, F., Morello, C., Mostafa, M., Muller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nasr-Esfahani, A., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nozka, L., Nucita, A., Nunez, L. A., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pekala, J., Pelayo, R., Pena-Rodriguez, J., Martins, E. E. P., Armand, J. P., Bertolli, C. P., Perlin, M., Perrone, L., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Rizi, V., de Carvalho, W. R., Rojo, J. R., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Gomez, J. D. S., Sanchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schafer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schluter, F., Schmidt, D., Scholten, O., Schovanek, P., Schroder, F. G., Schroder, S., Schulte, J., Sciutto, S. J., Scornavacche, M., Segreto, A., Sehgal, S., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Smida, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanic, S., Stasielak, J., Stassi, P., Streich, A., Suarez-Duran, M., Sudholz, T., Suomijarvi, T., Supanitsky, A. D., Supik, J., Szadkowski, Z., Taboada, A., Tapia, A., Taricco, C., Timmermans, C., Tkachenko, O., Tobiska, P., Peixoto, C. J. T., Tome, B., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Vaclavek, L., Vacula, M., Galicia, J. F. V., Valore, L., Varela, E., Varma, V., Vasquez-Ramirez, A., Veberic, D., Ventura, C., Quispe, I. D. V., Verzi, V., Vicha, J., Vink, J., Vorobiov, S., Wahlberg, H., Watanabe, C., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczynski, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Pierre Auger, Research unit Astroparticle Physics, Alvarez-Mu??iz, J., Alves Batista, R., Ara??jo Ferreira, P. R., Arteaga Vel??zquez, J. C., Barreira Luz, R. J., Boh????ov??, M., Bonneau Arbeletche, L., Brichetto Orchera, P. G., Cobos Cerutti, A. C., Concei????o, R., Correia dos Santos, D., de Jes??s, J., De Mauro, G., De Mitri, I., De Vito, E., del R??o, M., Filip??i??, A., Garc??a, B., Garcia Vegas, A. L., G??mez Berisso, M., G??mez Vitale, P. F., Gonz??lez, J. M., Gonz??lez, N., G??ra, D., H??randel, J. R., Hrabovsk??, M., K????p??, A., K??pke, M., Leigui de Oliveira, M. A., L??pez, R., Machado Payeras, A., Mari??, I. C., Mart??nez Bravo, O., Mostaf??, M., M??ller, A. L., No??ka, L., N????ez, L. A., P??kala, J., Pe??a-Rodriguez, J., Pereira Martins, E. E., Perez Armand, J., P??rez Bertolli, C., Rodrigues de Carvalho, W., Rodriguez Rojo, J., Sanabria Gomez, J. D., S??nchez, F., Sch??fer, C. M., Schl??ter, F., Schov??nek, P., Schr??der, F. G., Schr??der, S., m??da, R., Stani??, S., Su??rez-Dur??n, M., Suomij??rvi, T., up??k, J., Todero Peixoto, C. J., Tom??, B., Vald??s Galicia, J. F., Varma K. C., V., V??squez-Ram??rez, A., Veberi??, D., Vergara Quispe, I. D., Wilczy??ski, H., High Energy Astrophys. & Astropart. Phys (API, FNWI), Aab A., Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Alvarez-Muniz J., Batista R.A., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Ferreira P.R.A., Velazquez J.C.A., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Luz R.J.B., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Bister T., Biteau J., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Arbeletche L.B., Borodai N., Botti A.M., Brack J., Bretz T., Orchera P.G.B., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Choi K., Chudoba J., Chytka L., Clay R.W., Cerutti A.C.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., dos Santos D.C., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., de Almeida R.M., de Jesus J., de Jong S.J., de Mauro G., de Mello Neto J.R.T., de Mitri I., de Oliveira J., de Oliveira Franco D., de Palma F., de Souza V., de Vito E., del Rio M., Deligny O., Di Matteo A., Dobrigkeit C., D'Olivo J.C., dos Anjos R.C., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Vegas A.L.G., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glombitza J., Gobbi F., Gollan F., Golup G., Berisso M.G., Vitale P.F.G., Gongora J.P., Gonzalez J.M., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Hamal P., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Janecek P., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Kunka N., Lago B.L., Lang R.G., Langner N., de Oliveira M.A.L., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Lo Presti D., Lopes L., Lopez R., Lu L., Luce Q., Lucero A., Lundquist J.P., Payeras A.M., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Bravo O.M., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nasr-Esfahani A., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Nozka L., Nucita A., Nunez L.A., Palatka M., Pallotta J., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pekala J., Pelayo R., Pena-Rodriguez J., Martins E.E.P., Armand J.P., Bertolli C.P., Perlin M., Perrone L., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Rizi V., de Carvalho W.R., Rojo J.R., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Gomez J.D.S., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C.M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schulte J., Sciutto S.J., Scornavacche M., Segreto A., Sehgal S., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Tapia A., Taricco C., Timmermans C., Tkachenko O., Tobiska P., Peixoto C.J.T., Tome B., Travaini A., Travnicek P., Trimarelli C., Trini M., Tueros M., Ulrich R., Unger M., Vaclavek L., Vacula M., Galicia J.F.V., Valore L., Varela E., Varma V., Vasquez-Ramirez A., Veberic D., Ventura C., Quispe I.D.V., Verzi V., Vicha J., Vink J., Vorobiov S., Wahlberg H., Watanabe C., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., and Zepeda A.
Subjects: Photon, Physics::Instrumentation and Detectors, Astronomy, Electron, 01 natural sciences, High Energy Physics - Experiment, Auger, High Energy Physics - Experiment (hep-ex), mass [cosmic radiation], surface [detector], Observatory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], photon: cosmic radiation, Instrumentation, Mathematical Physics, Physics, AGASA, Settore FIS/01 - Fisica Sperimentale, Detector, cosmic radiation [photon], Astrophysics::Instrumentation and Methods for Astrophysics, Monte Carlo [numerical calculations], electromagnetic [showers], observatory, cosmic radiation [electron], Analysis and statistical methods, numerical calculations: Monte Carlo, Analysis and statistical method, performance, positron: cosmic radiation, atmosphere [showers], Cherenkov detector, data analysis method, Calibration and fitting methods, Cherenkov detectors, Cluster finding, Large detector systems for particle and astroparticle physics, Pattern recognition, Cherenkov counter: water, air, neural network, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, cosmic radiation [positron], cosmic radiation: mass, Calibration and fitting method, Nuclear physics, statistical analysis, 0103 physical sciences, showers: electromagnetic, ddc:530, ddc:610, High Energy Physics, 010306 general physics, Zenith, Pierre Auger Observatory, cosmic radiation [muon], Muon, showers: atmosphere, 010308 nuclear & particles physics, detector: surface, hep-ex, water [Cherenkov counter], electron: cosmic radiation, Recurrent neural network, muon: cosmic radiation, Large detector systems for particle and astroparticle physic, Experimental High Energy Physics, High Energy Physics::Experiment, RAIOS CÓSMICOS, experimental results
Abstract: The Pierre Auger Observatory, at present the largest cosmic-ray observatory ever built, is instrumented with a ground array of 1600 water-Cherenkov detectors, known as the Surface Detector (SD). The SD samples the secondary particle content (mostly photons, electrons, positrons and muons) of extensive air showers initiated by cosmic rays with energies ranging from $10^{17}~$eV up to more than $10^{20}~$eV. Measuring the independent contribution of the muon component to the total registered signal is crucial to enhance the capability of the Observatory to estimate the mass of the cosmic rays on an event-by-event basis. However, with the current design of the SD, it is difficult to straightforwardly separate the contributions of muons to the SD time traces from those of photons, electrons and positrons. In this paper, we present a method aimed at extracting the muon component of the time traces registered with each individual detector of the SD using Recurrent Neural Networks. We derive the performances of the method by training the neural network on simulations, in which the muon and the electromagnetic components of the traces are known. We conclude this work showing the performance of this method on experimental data of the Pierre Auger Observatory. We find that our predictions agree with the parameterizations obtained by the AGASA collaboration to describe the lateral distributions of the electromagnetic and muonic components of extensive air showers., Comment: Published version, 23 pages, 15 figures
Published: 2022
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12. The Spontaneous Nature of Lightning Initiation Revealed

Author: Olaf Scholten, Joseph R. Dwyer, A. Nelles, Ningyu Liu, C. Sterpka, Brian Hare, S. ter Veen, Stijn Buitink, Astronomy, and Physics
Subjects: Physics, Beamforming, business.industry, Astronomy, lightning initiation, LOFAR, Low frequency, interferometry, Lightning, Interferometry, Flash (photography), Geophysics, Optics, ddc:550, General Earth and Planetary Sciences, Radio interferometer, business, streamers
Abstract: Geophysical research letters 48(23), GL095511 (2021). doi:10.1029/2021GL095511, Here, we present new radio interferometer beamforming observations of lightning initiation using data from the Low-Frequency Array (LOFAR). We show that the first lightning source in the flash increases exponentially in intensity by two orders of magnitude in 15 ��s, while propagating 88 m away from the initiation location at a constant speed of 4.8 �� 0.1 �� 10$^6$ m/s. A second source replaces the first source at the initiation location, and subsequent propagation of the lightning leader follows. We interpret the first source to be a rapidly propagating and intensifying positive streamer discharge that subsequently produces a hot leader channel near the initiation point. How lightning initiates is one of the greatest unsolved problems in the atmospheric sciences, and these results shed light on this longstanding mystery., Published by Wiley, Hoboken, NJ
Published: 2021
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13. The Radio Neutrino Observatory Greenland (RNO-G)

Author: Zachary S. Meyers, Allan Hallgren, Katie Carter, Anna Nelles, Thomas Meures, Ryan Krebs, Lilly Pyras, Krijn D. de Vries, N. Bingefors, John L. Kelley, Patrick Allison, U. Latif, Benjamin Hokanson-Fasig, Juan A. Aguilar, Dieder J. Van Den Broeck, Simon De Kockere, R. Lahmann, Ilse Plaisier, Stephanie Wissel, David Zeke Besson, Jorge Torres, M. A. DuVernois, Mitchell Magnuson, Simona Toscano, Kaeli Hughes, D. Tosi, Christian Glaser, Maddalena Cataldo, Bob Oeyen, Dirk Ryckbosch, Robert Young, Rno-g, Steffen Hallmann, Cosmin Deaconu, Zachary Curtis-Ginsberg, Daniel Southall, J. J. Beatty, Daniel Smith, Hans Bernhoff, C. Hornhuber, Katharine Mulrey, Paramita Dasgupta, Olga Botner, Sjoerd Bouma, Olaf Scholten, D. Seckel, Brian Clark, Alexander Novikov, Amy Connolly, Christoph Welling, Spencer Klein, Hershal Pandya, Stijn Buitink, Bryan Hendricks, Nick van Eijndhoven, Eric Oberla, A. Karle, Abigail G. Vieregg, Adrian Zink, and Jordan C. Hanson
Subjects: Neutrino detector, Sky, Software deployment, Observatory, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Astrophysics::Instrumentation and Methods for Astrophysics, Environmental science, Astronomy, Instrumentation (computer programming), Neutrino, media_common
Abstract: The Radio Neutrino Observatory Greenland (RNO-G) is scheduled for deployment in the summerof 2021. It will target the detection of astrophysical and cosmogenic neutrinos above 10 PeV. With 35 autonomous stations, it will be the largest implementation of a radio neutrino detector to date.The stations combine best-practice instrumentation from all previous radio neutrino arrays, such as a deep phased-array trigger and surface antennas. These proceedings describe the experimentalconsiderations that have driven the design of RNO-G and the current progress in deployment, aswell as discuss the projected sensitivity of the instrument. RNO-G will provide a unique view ofthe Northern Sky and will also inform the design of the radio component of IceCube-Gen2.
Published: 2021
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14. A distinct negative leader propagation mode

Author: T. Huege, Ivana Kolmasova, Heino Falcke, Olaf Scholten, Ningyu Liu, A. Nelles, H. Pandya, Stijn Buitink, Katie Mulrey, Jörg P. Rachen, Jörg R. Hörandel, Arthur Corstanje, Joseph R. Dwyer, Radek Lan, C. Sterpka, Brian Hare, Luděk Uhlíř, Ondřej Santolík, Tobias Winchen, G. K. Krampah, S. ter Veen, Pragati Mitra, T. N. G. Trinh, Satyendra Thoudam, Astronomy, Research unit Astroparticle Physics, Physics, and Faculty of Sciences and Bioengineering Sciences
Subjects: Physics, Atmospheric dynamics, Multidisciplinary, 010504 meteorology & atmospheric sciences, Astronomy, Science, Mode (statistics), Natural hazards, LOFAR, 010501 environmental sciences, 010502 geochemistry & geophysics, Lightning, 01 natural sciences, Article, Radio telescope, Medicine, Electric discharge, ddc:530, ddc:600, 0105 earth and related environmental sciences
Abstract: Scientific reports 11, 16256 (2021). doi:10.1038/s41598-021-95433-5, The common phenomenon of lightning still harbors many secrets such as what are the conditions for lightning initiation and what is driving the discharge to propagate over several tens of kilometers through the atmosphere forming conducting ionized channels called leaders. Since lightning is an electric discharge phenomenon, there are positively and negatively charged leaders. In this work we report on measurements made with the LOFAR radio telescope, an instrument primarily build for radio-astronomy observations. It is observed that a negative leader rather suddenly changes, for a few milliseconds, into a mode where it radiates 100 times more VHF power than typical negative leaders after which it spawns a large number of more typical negative leaders. This mode occurs during the initial stage, soon after initiation, of all lightning flashes we have mapped (about 25). For some flashes this mode occurs also well after initiation and we show one case where it is triggered twice, some 100 ms apart. We postulate that this is indicative of a small (order of 5 km$^2$) high charge pocket. Lightning thus appears to be initiated exclusively in the vicinity of such a small but dense charge pocket., Published by Macmillan Publishers Limited, part of Springer Nature, [London]
Published: 2021
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15. The FRAM robotic telescope for atmospheric monitoring at the Pierre Auger Observatory

Author: Jose Chinellato, Ioana Caracas, Lorenzo Cazon, C. Pérez Bertolli, Ioana Codrina Maris, Marina Scornavacche, R. Ulrich, G. C. Hill, Jorge F. Soriano, Ralph Engel, M. Risse, H. J. Mathes, J. Ridky, Xavier Bertou, G. Marsella, David Wittkowski, G. Salina, Olivier Deligny, M. Unger, Tomáš Fodran, Alina Nasr-Esfahani, Stanislav Michal, Jonathan Blazek, Ugo Giaccari, J. Kleinfeller, K. Choi, Julien Manshanden, Andres Travaini, E. Varela, J.D. Sanabria Gomez, K.-H. Becker, M. Pimenta, P.R. Araújo Ferreira, Tobias Winchen, Denis Stanca, Florian Lukas Briechle, F. Canfora, G. Farrar, Antonio Condorelli, Carla Bleve, Rodrigo Guedes Lang, G. De Mauro, Silvia Mollerach, N. Fazzini, Jonas Glombitza, F. C. T. Barbato, P. Abreu, D. Ravignani, Alena Bakalova, G. Matthiae, Jaime Alvarez-Muñiz, J. Rodriguez Rojo, Fridtjof Feldbusch, Enrique Zas, Marvin Gottowik, Carlos Escobar, Kevin-Druis Merenda, R.J. Barreira Luz, G. P. Guedes, G. Parente, L. Zehrer, A. Puyleart, Corinne Berat, M. Giller, Jörg R. Hörandel, Paul Sommers, P. Kubánek, Flavia Gesualdi, Fernando Contreras, Alexandru Gherghel-Lascu, Belén Andrada, P. Tobiska, Antonio Bueno, Violet M. Harvey, D. Harari, J. Chudoba, Valerio Pirronello, Gualberto Avila, B. García, Lukáš Vaclavek, Toshihiro Fujii, Dariusz Gora, Eric Mayotte, A. Zepeda, R. López, G. Mancarella, Pedro Assis, H. Martinez, A. Etchegoyen, Matías J. Roncoroni, Martina Bohacova, A. Aab, J. Biteau, I. Lhenry-Yvon, Karen S. Caballero-Mora, A.L. Garcia Vegas, B. Keilhauer, J. de Oliveira, A.D. Supanitsky, M. Gómez Berisso, Jakub Juryšek, Alejandro Almela, R. C. Shellard, S. J. Sciutto, A. Di Matteo, Alan Coleman, S. J. Saffi, B. Wundheiler, Marcel Köpke, Martin Erdmann, J. de Jesús, Juan Miguel Carceller, C. J. Todero Peixoto, Alina Mihaela Badescu, Cristina Galea, John Farmer, Serguei Vorobiov, M. Platino, Maria Rita Coluccia, Carla Taricco, M. Prouza, G. Cataldi, A. Streich, Gioacchino Alex Anastasi, D. Nitz, Juan Pablo Gongora, F. Pedreira, M. I. Micheletti, F. Salamida, M. Wirtz, Petr Hamal, B. L. Lago, P. Ruehl, Fred Sarazin, Thomas Bretz, A. Taboada, V. Scherini, A. Yushkov, Roger W Clay, Clara Keiko Oliveira Watanabe, Matias Tueros, Raul Sarmento, D. Melo, Mario Buscemi, Thomas Hebbeker, Maria-Teresa Dova, Sergio Dasso, Tristan Sudholz, Martin Vacula, Felix Schlüter, Magdalena Cerdá, E.E. Pereira Martins, Steffen Hahn, Juan Carlos D'Olivo, K. H. Kampert, T. Pierog, Fabian Gobbi, Christian Sarmiento-Cano, Hernán Asorey, Martín Miguel Freire, P.F. Gómez Vitale, Heino Falcke, Maximilian Reininghaus, L. R. Wiencke, Niklas Langner, J. C. Arteaga Velázquez, Petr Janecek, Brian Fick, M. Suárez-Durán, J. Vicha, Corbin Covault, Darko Veberič, Matías Rolf Hampel, Esteban Roulet, Rúben Conceição, R. Sato, Paula Gina Isar, J. Rautenberg, D. Nosek, F. Riehn, L. Nožka, Lourenco Lopes, M. Roth, S. Karpov, J. Perez Armand, E. Santos, Jesús Peña-Rodríguez, Q. Luce, Gaia Silli, Dusan Mandat, Justin M. Albury, A. Filipčič, T. Huege, F. Sanchez, Maximilian Stadelmaier, Frank G. Schröder, Lino Miramonti, Luis A. Nunez, A. Gorgi, A. Insolia, M. Kleifges, D. Zavrtanik, J. F. Valdés Galicia, Marcio Aparecido Muller, M. Zavrtanik, Antoine Letessier-Selvon, A. Fuster, L. Valore, I. De Mitri, Jeffrey Brack, S. Petrera, Marc Weber, W. M. Namasaka, M. Mastrodicasa, D. de Oliveira Franco, K. C. V. Varma, E. De Vito, Olaf Scholten, Marcus Niechciol, Humberto Ibarguen Salazar, C. M. Schäfer, A. C. Rovero, Giovanni Consolati, R.C. dos Anjos, Adriana Vásquez-Ramírez, E. M. Santos, A. Weindl, Bjarni Pont, Alexandru Balaceanu, M. A. Leigui de Oliveira, Roberto Mussa, Lorenzo Caccianiga, G. Golup, M. Palatka, R. Alves Batista, Bruce R. Dawson, C. Trimarelli, N. Kunka, H. Wilczyński, Claudio Galelli, L. Lu, Juan Manuel González, Carla Aramo, Vincenzo Rizi, P.O. Mazur, Julien Souchard, V. Novotny, C. J.W.P. Timmermans, D. Lo Presti, Rossella Caruso, A. Lucero, Fernando Catalani, D. Martello, S. J. De Jong, A. Tapia, Petr Schovanek, O. Martínez Bravo, Piera Luisa Ghia, T. Bister, Jon Paul Lundquist, A. Menshikov, H. Gemmeke, David Schmidt, S. Schröder, Italo Epicoco, M. Schimassek, François Montanet, Miguel Mostafa, Julian Kemp, S. Querchfeld, Sullivan Marafico, Olena Tkachenko, C. Hojvat, Jan Ebr, Valerio Verzi, Eleonora Guido, L. Nellen, Jarryd A. Day, A. Saftoiu, Marco Giammarchi, J. Šupík, Carlo Ventura, Octavian Sima, M. Mašek, B. Tome, C. Morello, Luis A. Anchordoqui, Jacco Vink, Alex Kääpä, Philipp Papenbreer, Samo Stanič, H.O. Klages, Petr Travnicek, L. Bonneau Arbeletche, Trent D. Grubb, Ladislav Chytka, A.C. Cobos Cerutti, R. Cunniffe, N. González, J. R. T. de Mello Neto, Peter L. Biermann, Juan Manuel Figueira, Isabel Goos, Roberta Colalillo, A. G. Mariazzi, J. Stasielak, Kai Daumiller, H. Schieler, Paolo Privitera, A. A. Nucita, Antonella Castellina, D. Heck, M. del Río, I. Ebrová, Denise Boncioli, P. Savina, W. Rodrigues de Carvalho, M. Jelínek, Jeffrey A. Johnsen, Nataliia Borodai, A. Segreto, Vladimir Lenok, L. Perrone, J. Hulsman, Günter Sigl, R. Squartini, Alfred Müller, P. Stassi, Radomir Smida, A. Machado Payeras, J. Eliášek, G. Medina-Tanco, Srijan Sehgal, Miroslav Pech, M. Pothast, Fernando Gollan, F. de Palma, Pavel Horvath, V. de Souza, Sofia Andringa, M. Schimp, B. C. Manning, Ana Martina Botti, Francesco Fenu, Miroslav Hrabovský, A. Haungs, Josina Schulte, Peter Hansen, P. Mantsch, Z. Szadkowski, J. Pkala, F. Guarino, John Matthews, Peter Buchholz, Marco Aglietta, R. M. de Almeida, D. Correia dos Santos, Rodrigo Pelayo, Stijn Buitink, Katie Mulrey, Orazio Zapparrata, Carola Dobrigkeit, M. Muzio, M. E. Bertaina, Alan Watson, M. Perlin, Mihai Niculescu-Oglinzanu, T. Suomijärvi, J. Pallotta, A. C. Fauth, Carla Bonifazi, Jose A. Bellido, Fabio Convenga, I.D. Vergara Quispe, Hernan Wahlberg, A. Parra, M. Trini, P.G. Brichetto Orchera, I. Allekotte, High Energy Astrophys. & Astropart. Phys (API, FNWI), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Pierre Auger, Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez-Mu??iz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Ara??jo Ferreira, P. R., Arteaga Vel??zquez, J. C., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blazek, J., Bleve, C., Boh????ov??, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Brichetto Orchera, P. G., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Concei????o, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Correia dos Santos, D., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jes??s, J., de Jong, S. J., De Mauro, G., de Mello Neto, J. R. T., De Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Palma, F., de Souza, V., De Vito, E., del R??o, M., Deligny, O., Di Matteo, A., Dobrigkeit, C., D'Olivo, J. C., dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filip??i??, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., Garc??a, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., G??mez Berisso, M., G??mez Vitale, P. F., Gongora, J. P., Gonz??lez, J. M., Gonz??lez, N., Goos, I., G??ra, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Hamal, P., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., H??randel, J. R., Horvath, P., Hrabovsk??, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Janecek, P., Johnsen, J. A., Jurysek, J., K????p??, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., K??pke, M., Kunka, N., Lago, B. L., Lang, R. G., Langner, N., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., L??pez, R., Lu, L., Luce, Q., Lucero, A., Lundquist, J. P., Machado Payeras, A., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Mari??, I. C., Marsella, G., Martello, D., Martinez, H., Mart??nez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mollerach, S., Montanet, F., Morello, C., Mostaf??, M., M??ller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nasr-Esfahani, A., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., No??ka, L., Nucita, A., N????ez, L. A., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., P??kala, J., Pelayo, R., Pe??a-Rodriguez, J., Pereira Martins, E. E., Perez Armand, J., P??rez Bertolli, C., Perlin, M., Perrone, L., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., S??nchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Sch??fer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schl??ter, F., Schmidt, D., Scholten, O., Schov??nek, P., Schr??der, F. G., Schr??der, S., Schulte, J., Sciutto, S. J., Scornavacche, M., Segreto, A., Sehgal, S., Shellard, R. C., Sigl, G., Silli, G., Sima, O., m??da, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stani??, S., Stasielak, J., Stassi, P., Streich, A., Su??rez-Dur??n, M., Sudholz, T., Suomij??rvi, T., Supanitsky, A. D., up??k, J., Szadkowski, Z., Taboada, A., Tapia, A., Taricco, C., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tom??, B., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Vaclavek, L., Vacula, M., Vald??s Galicia, J. F., Valore, L., Varela, E., Varma K. C., V., V??squez-Ram??rez, A., Veberi??, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Vink, J., Vorobiov, S., Wahlberg, H., Watanabe, C., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczy??ski, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Cunniffe, R., Eli????ek, J., Ebrov??, I., Jel??nek, M., Karpov, S., Kub??nek, P., Ma??ek, M., Pierre Auger Collaboration, T., Alvarez-Muniz, J., Araujo Ferreira, P. R., Arteaga Velazquez, J. C., Bohacova, M., Conceicao, R., Correia Dos Santos, D., De Almeida, R. M., De Jesus, J., De Jong, S. J., De Mello Neto, J. R. T., De Oliveira, J., De Oliveira Franco, D., De Palma, F., De Souza, V., Del Rio, M., Dos Anjos, R. C., Filipcic, A., Garcia, B., Gomez Berisso, M., Gomez Vitale, P. F., Gonzalez, J. M., Gonzalez, N., Gora, D., Horandel, J. R., Hrabovsky, M., Kaapa, A., Kopke, M., Leigui De Oliveira, M. A., Lopez, R., Maris, I. C., Martinez Bravo, O., Mostafa, M., Muller, A. L., Nozka, L., Nunez, L. A., Pkala, J., Pena-Rodriguez, J., Perez Bertolli, C., Rodrigues De Carvalho, W., Sanchez, F., Schafer, C. M., Schluter, F., Schovanek, P., Schroder, F. G., Schroder, S., Smida, R., Stanic, S., Suarez-Duran, M., Suomijarvi, T., Supik, J., Tome, B., Valdes Galicia, J. F., Varma, K. C. V., Vasquez-Ramirez, A., Veberic, D., Wilczynski, H., Eliasek, J., Ebrova, I., Jelinek, M., Kubanek, P., Masek, M., Research unit Astroparticle Physics, Pierre Auger Collaboration T., Aab A., Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Alvarez-Muniz J., Alves Batista R., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Araujo Ferreira P.R., Arteaga Velazquez J.C., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Barreira Luz R.J., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Bister T., Biteau J., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Bonneau Arbeletche L., Borodai N., Botti A.M., Brack J., Bretz T., Brichetto Orchera P.G., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Choi K., Chudoba J., Chytka L., Clay R.W., Cobos Cerutti A.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., Correia Dos Santos D., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., De Almeida R.M., De Jesus J., De Jong S.J., De Mauro G., De Mello Neto J.R.T., De Mitri I., De Oliveira J., De Oliveira Franco D., De Palma F., De Souza V., De Vito E., Del Rio M., Deligny O., Di Matteo A., Dobrigkeit C., D'Olivo J.C., Dos Anjos R.C., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Garcia Vegas A.L., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glombitza J., Gobbi F., Gollan F., Golup G., Gomez Berisso M., Gomez Vitale P.F., Gongora J.P., Gonzalez J.M., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Hamal P., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Janecek P., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Kunka N., Lago B.L., Lang R.G., Langner N., Leigui De Oliveira M.A., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Lo Presti D., Lopes L., Lopez R., Lu L., Luce Q., Lucero A., Lundquist J.P., Machado Payeras A., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Martinez Bravo O., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nasr-Esfahani A., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Nozka L., Nucita A., Nunez L.A., Palatka M., Pallotta J., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pkala J., Pelayo R., Pena-Rodriguez J., Pereira Martins E.E., Perez Armand J., Perez Bertolli C., Perlin M., Perrone L., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Rizi V., Rodrigues De Carvalho W., Rodriguez Rojo J., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Sanabria Gomez J.D., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C.M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schulte J., Sciutto S.J., Scornavacche M., Segreto A., Sehgal S., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Tapia A., Taricco C., Timmermans C., Tkachenko O., Tobiska P., Todero Peixoto C.J., Tome B., Travaini A., Travnicek P., Trimarelli C., Trini M., Tueros M., Ulrich R., Unger M., Vaclavek L., Vacula M., Valdes Galicia J.F., Valore L., Varela E., Varma K.C.V., Vasquez-Ramirez A., Veberic D., Ventura C., Vergara Quispe I.D., Verzi V., Vicha J., Vink J., Vorobiov S., Wahlberg H., Watanabe C., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., Zepeda A., Cunniffe R., Eliasek J., Ebrova I., Jelinek M., Karpov S., Kubanek P., Masek M., and Physics
Subjects: Astronomy, Large detector systems for particle and astroparticle physics, Optics, Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc), Real-time monitoring, 01 natural sciences, Auger, Successful operation, Observatory, optical, APDs, hardware, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Instrumentation, Photon detectors for UV, Mathematical Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, EBCCDs, Settore FIS/01 - Fisica Sperimentale, Astrophysics::Instrumentation and Methods for Astrophysics, Si-PMTs, observatory, Robotic telescope, G-APDs, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Sciences exactes et naturelles, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, programming, detector: fluorescence, Photometry (optics), 0103 physical sciences, ddc:610, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], High Energy Physics, visible and IR photons (solid-state) (PIN diodes, CMOS imagers, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Remote sensing, etc), fluorescence [detector], Pierre Auger Observatory, 010308 nuclear & particles physics, Active monitoring, CCDs, laser, monitoring, EMCCDs, Large detector systems for particle and astroparticle physic, atmosphere, Experimental High Energy Physics, Optic, Environmental science, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], RAIOS CÓSMICOS, astro-ph.IM
Abstract: FRAM (F/Photometric Robotic Atmospheric Monitor) is a robotic telescope operated at the Pierre Auger Observatory in Argentina for the purposes of atmospheric monitoring using stellar photometry. As a passive system which does not produce any light that could interfere with the observations of the fluorescence telescopes of the observatory, it complements the active monitoring systems that use lasers. We discuss the applications of stellar photometry for atmospheric monitoring at optical observatories in general and the particular modes of operation employed by the Auger FRAM. We describe in detail the technical aspects of FRAM, the hardware and software requirements for a successful operation of a robotic telescope for such a purpose and their implementation within the FRAM system., Published version, 27 pages, 8 figures
Published: 2021
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16. The relationship of lightning radio pulse amplitudes and source altitudes as observed by LOFAR

Author: A. Nelles, Arthur Corstanje, Heino Falcke, Brian Hare, Stijn Buitink, Katie Mulrey, H. Pandya, J. G. O. Machado, T. Huege, Olaf Scholten, Satyendra Thoudam, G. K. Krampah, Pragati Mitra, S. ter Veen, Tobias Winchen, T. N. G. Trinh, Jörg P. Rachen, Jörg R. Hörandel, Astronomy, Astronomy and Astrophysics Research Group, Physics, and Faculty of Sciences and Bioengineering Sciences
Subjects: Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Environmental Science (miscellaneous), radio astronomy, Atmosphere, Flash (photography), Altitude, ddc:550, ddc:530, Physics::Atmospheric and Oceanic Physics, amplitude, Physics, pulse detection, Astrophysics::Instrumentation and Methods for Astrophysics, LOFAR, Lightning, Pulse (physics), Amplitude, Physics::Space Physics, General Earth and Planetary Sciences, lightning, Radio astronomy, altitude
Abstract: Earth and Space Science 9(4), e2021EA001958 (2022). doi:10.1029/2021EA001958, When a lightning flash is propagating in the atmosphere it is known that especially the negative leaders emit a large number of very high frequency (VHF) radio pulses. It is thought that this is due to streamer activity at the tip of the growing negative leader. In this work, we have investigated the dependence of the strength of this VHF emission on the altitude of such emission for two lightning flashes as observed by the Low Frequency ARray (LOFAR) radio telescope. We find for these two flashes that the extracted amplitude distributions are consistent with a power-law, and that the amplitude of the radio emissions decreases very strongly with source altitude, by more than a factor of 2 from 1 km altitude up to 5 km altitude. In addition, we do not find any dependence on the extracted power-law with altitude, and that the extracted power-law slope has an average around 3, for both flashes., Published by American Geophysical Union, Malden, Mass.
Published: 2021
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17. Depth of shower maximum and mass composition of cosmic rays from 50 PeV to 2 EeV measured with the LOFAR radio telescope

Author: G. K. Krampah, G. Trinh, Tobias Winchen, Brian Hare, S. ter Veen, Pragati Mitra, Arthur Corstanje, Anna Nelles, Stijn Buitink, Katie Mulrey, Heino Falcke, H. Pandya, Jörg P. Rachen, J. R. Hörandel, Satyendra Thoudam, T. Huege, Olaf Scholten, Astronomy, Physics, and Faculty of Sciences and Bioengineering Sciences
Subjects: mass spectrum [cosmic radiation], air, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, Cosmic ray, helium, Astrophysics, 01 natural sciences, High Energy Physics - Experiment, Radio telescope, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, ddc:530, 010306 general physics, Line (formation), astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Experiments in gravity, cosmology, cosmic rays, Physics, Pierre Auger Observatory, hep-ex, 010308 nuclear & particles physics, model [interaction], nucleus, Astrophysics::Instrumentation and Methods for Astrophysics, parametrization, LOFAR, tension, Auger, observatory, detector [radio wave], Air shower, 13. Climate action, hadronic [model], galaxy, Astrophysics - High Energy Astrophysical Phenomena, statistical, Energy (signal processing), atmosphere [showers]
Abstract: We present an updated cosmic-ray mass composition analysis in the energy range $10^{16.8}$ to $10^{18.3}$ eV from 334 air showers measured with the LOFAR radio telescope, and selected for minimal bias. In this energy range, the origin of cosmic rays is expected to shift from galactic to extragalactic sources. The analysis is based on an improved method to infer the depth of maximum $X_{\rm max}$ of extensive air showers from radio measurements and air shower simulations. We show results of the average and standard deviation of $X_{\rm max}$ versus primary energy, and analyze the $X_{\rm max}$-dataset at distribution level to estimate the cosmic ray mass composition. Our approach uses an unbinned maximum likelihood analysis, making use of existing parametrizations of $X_{\rm max}$-distributions per element. The analysis has been repeated for three main models of hadronic interactions. Results are consistent with a significant light-mass fraction, at best fit $23$ to $39$ $\%$ protons plus helium, depending on the choice of hadronic interaction model. The fraction of intermediate-mass nuclei dominates. This confirms earlier results from LOFAR, with systematic uncertainties on $X_{\rm max}$ now lowered to 7 to $9$ $\mathrm{g/cm^2}$. We find agreement in mass composition compared to results from Pierre Auger Observatory, within statistical and systematic uncertainties. However, in line with earlier LOFAR results, we find a slightly lower average $X_{\rm max}$. The values are in tension with those found at Pierre Auger Observatory, but agree with results from other cosmic ray observatories based in the Northern hemisphere., 24 pages, 14 figures. Accepted for publication in Phys. Rev. D
Published: 2021
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18. Design and Sensitivity of the Radio Neutrino Observatory in Greenland (RNO-G)

Author: J. J. Beatty, Hans Bernhoff, Robert Lahmann, C. Hornhuber, Christian Glaser, Daniel P. Smith, Lilly Pyras, J. L. Kelley, Alexander Novikov, M. A. DuVernois, Brian Hendricks, Stijn Buitink, Cosmin Deaconu, Ilse Plaisier, Mitchell Magnuson, Albrecht Karle, Eric Oberla, K. D. de Vries, Steffen Hallmann, Paramita Dasgupta, Brian Clark, Adrian Zink, N. van Eijndhoven, H. Pandya, Dirk Ryckbosch, P. Allison, S. Toscano, Olga Botner, Daniel Southall, Abigail G. Vieregg, D. Van den Broeck, Jorge Torres, Zachary S. Meyers, C. Welling, Daniel García-Fernández, Katie Carter, Anna Nelles, Ryan Krebs, N. Bingefors, Olaf Scholten, A. Connolly, D. Seckel, S. De Kockere, Robert Young, N. Feigl, Allan Hallgren, J. C. Hanson, Stephanie Wissel, T. Meures, Kaeli Hughes, Bob Oeyen, Ben Hokanson-Fasig, David Zeke Besson, Juanan Aguilar, Spencer Klein, Physics, Elementary Particle Physics, and Faculty of Sciences and Bioengineering Sciences
Subjects: Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, ice, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, 030218 nuclear medicine & medical imaging, Askaryan effect, 03 medical and health sciences, neutrino, 0302 clinical medicine, Observatory, 0103 physical sciences, hardware, Neutrino detectors, 14. Life underwater, Sensitivity (control systems), ddc:610, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Mathematical Physics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Large detector systems for particle and astroparticle physics, 010308 nuclear & particles physics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, sensitivity, cascade, observatory, detector [radio wave], Physics and Astronomy, Neutrino detector, Physique des particules élémentaires, High Energy Physics::Experiment, Neutrino, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, astro-ph.IM
Abstract: This article presents the design of the Radio Neutrino Observatory Greenland (RNO-G) and discusses its scientific prospects. Using an array of radio sensors, RNO-G seeks to measure neutrinos above 10 PeV by exploiting the Askaryan effect in neutrino-induced cascades in ice. We discuss the experimental considerations that drive the design of RNO-G, present first measurements of the hardware that is to be deployed and discuss the projected sensitivity of the instrument. RNO-G will be the first production-scale radio detector for in-ice neutrino signals., Comment: 51 pages, 27 figures, version updated to include corrected figure of effective areas
Published: 2021
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19. The Initial Stage of Cloud Lightning Imaged in High Resolution

Author: Ondrej Santolik, Katharine Mulrey, A. Nelles, Luděk Uhlíř, S. ter Veen, Heino Falcke, Tobias Winchen, Arthur Corstanje, Olaf Scholten, H. Pandya, Tim Huege, C. Sterpka, Joseph R. Dwyer, G. K. Krampah, Radek Lan, Pragati Mitra, Brian Hare, A. Pel, Ivana Kolmasova, Satyendra Thoudam, T. N. G. Trinh, Jörg P. Rachen, Jörg R. Hörandel, Stijn Buitink, Physics, Faculty of Sciences and Bioengineering Sciences, Astronomy, and Research unit Astroparticle Physics
Subjects: Atmospheric Science, 010504 meteorology & atmospheric sciences, business.industry, Astronomy, FOS: Physical sciences, High resolution, Cloud computing, LOFAR, 01 natural sciences, Lightning, Physics - Atmospheric and Oceanic Physics, Geophysics, 13. Climate action, Space and Planetary Science, Atmospheric and Oceanic Physics (physics.ao-ph), Earth and Planetary Sciences (miscellaneous), ddc:550, Stage (hydrology), business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Geology, 0105 earth and related environmental sciences, Remote sensing
Abstract: With LOFAR we have been able to image the development of lightning flashes with meter-scale accuracy and unprecedented detail. We discuss the primary steps behind our most recent lightning mapping method. To demonstrate the capabilities of our technique we show and interpret images of the first few milliseconds of two intra-cloud flashes. In all our flashes the negative leaders propagate in the charge layer below the main negative charge. Among several interesting features we show that in about 2~ms after initiation the Primary Initial Leader triggers the formation of a multitude (more than ten) negative leaders in a rather confined area of the atmosphere. From these only one or two continue to propagate after about 30~ms to extend over kilometers horizontally while another may propagate back to the initiation point. We also show that normal negative leaders can transition into an initial-leader like state, potentially in the presence of strong electric fields. In addition, we show some initial breakdown pulses that occurred during the primary initial leader, and even during two "secondary" initial leaders that developed out of stepped leaders., Submitted to Journal of geophysics research: Atmospheres
Published: 2021
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20. Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory

Author: H. J. Mathes, Stanislav Michal, Miroslav Pech, Antonio Condorelli, M. Pothast, Pavel Horvath, A.L. Garcia Vegas, W. M. Namasaka, A. C. Rovero, M. Risse, J. Rodriguez Rojo, Fridtjof Feldbusch, B. Andrada, Alexandru Balaceanu, Jonathan Blazek, Carla Aramo, Vincenzo Rizi, J. F. Valdés Galicia, Julien Souchard, Sofia Andringa, Enrique Zas, Magdalena Cerdá, Hernán Asorey, I. De Mitri, D. Martello, David Wittkowski, O. Martínez Bravo, K. Mulrey, P. Abreu, D. Ravignani, G. Salina, Danielle LaHurd, Olivier Deligny, Marcel Köpke, M. Platino, Fernando Contreras, A. Tapia, H. Gemmeke, G. Parente, Fabrizia Canfora, L. Zehrer, L. Lopes, Tomáš Fodran, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, M. A. Leigui de Oliveira, Flavia Gesualdi, G. Kukec Mezek, G. Marsella, Valerio Pirronello, R. Lorek, G. De Mauro, M. Unger, Ugo Giaccari, Silvia Mollerach, H. Dembinski, N. Fazzini, Jonas Glombitza, F. C. T. Barbato, Dariusz Gora, M. E. Bertaina, Jon Paul Lundquist, A. Menshikov, K.-H. Becker, M. Pimenta, P.R. Araújo Ferreira, J. de Oliveira, Alejandro Almela, C. J. Todero Peixoto, M. Zavrtanik, Lukáš Vaclavek, W. Rodrigues de Carvalho, Jörg R. Hörandel, B. Keilhauer, Marcus Niechciol, A. C. Fauth, Teresa Bister, J. Chudoba, Alan Coleman, B. Tome, Josina Schulte, S. J. Saffi, Tobias Winchen, Julian Kemp, S. J. Sciutto, Carla Bleve, Rodrigo Guedes Lang, Florian Lukas Briechle, Peter Hansen, Lorenzo Caccianiga, Marvin Gottowik, Julien Manshanden, G. Cataldi, E. De Vito, F. Guarino, John Matthews, I. Lhenry-Yvon, Nataliia Borodai, V. Scherini, Paul Sommers, Peter Buchholz, Andres Travaini, Giovanni Consolati, E. Varela, J.D. Sanabria Gomez, Juan Miguel Carceller, Christian Sarmiento-Cano, R. M. de Almeida, P. Tobiska, Alex Kääpä, F. Pedreira, Carla Bonifazi, D. Lo Presti, Jose A. Bellido, S. J. De Jong, Marco Aglietta, Vladimir Lenok, Eric Mayotte, Raul Sarmento, Fabio Convenga, M. M. Freire, Felix Schlüter, H. Wilczyński, Jeffrey A. Johnsen, Fabian Gobbi, Jose Chinellato, F. Sánchez, Serguei Vorobiov, L. Perrone, Alena Bakalova, E. M. Santos, D. Nitz, R. Squartini, Alfred Müller, Petr Schovanek, Valerio Verzi, A. Fuster, G. Golup, M. Gómez Berisso, R. C. Shellard, Octavian Sima, Jarryd A. Day, A. Saftoiu, A.C. Cobos Cerutti, J. R. T. de Mello Neto, G. Torralba Elipe, R. Alves Batista, Bruce R. Dawson, G. Matthiae, Jesús Peña-Rodríguez, Antonio Bueno, Thomas Hebbeker, Sergio Dasso, Tristan Sudholz, H. Schieler, Antonella Castellina, Maria Rita Coluccia, A. Di Matteo, M. Schimp, B. Wundheiler, B. C. Manning, A. Insolia, M. Kleifges, D. Zavrtanik, A.D. Supanitsky, Fred Sarazin, J. Pȩkala, Ioana Caracas, A. Letessier-Selvon, B. García, R. López, Karen S. Caballero-Mora, P.O. Mazur, Thomas Bretz, Lorenzo Cazon, Darko Veberič, Mario Buscemi, Roberto Mussa, T. Huege, I.D. Vergara Quispe, G. Medina-Tanco, R. Halliday, L. Valore, J. Rautenberg, Jeffrey Brack, Günter Sigl, Olaf Scholten, F. Riehn, Marina Scornavacche, Corbin Covault, Jonathan Biteau, Francesco Fenu, Xavier Bertou, Humberto Ibarguen Salazar, L. R. Wiencke, Rodrigo Pelayo, Stijn Buitink, Niklas Langner, S. Querchfeld, Olena Tkachenko, J. Šupík, Carlo Ventura, Gualberto Avila, Q. Luce, M. Suárez-Durán, Maximilian Reininghaus, A. Zepeda, Brian Fick, Nicolás González, P. Stassi, Ladislav Chytka, Lino Miramonti, Ioana Codrina Maris, Pedro Assis, François Montanet, Radomir Smida, A. Machado Payeras, Martin Erdmann, J. de Jesús, H. Martinez, A. Etchegoyen, Maximilian Stadelmaier, Sullivan Marafico, Miguel Mostafa, P. Ruehl, D. de Oliveira Franco, A. Streich, Gioacchino Alex Anastasi, Dusan Mandat, J. Stasielak, J. Hulsman, J. Kleinfeller, G. C. Hill, Marco Giammarchi, M. Wirtz, Frank G. Schröder, Eleonora Guido, Roger W Clay, Jorge F. Soriano, Ralph Engel, Denis Stanca, C. M. Schäfer, Fernando Gollan, Massimo Mastrodicasa, Hernan Wahlberg, L. Nellen, Carlos Escobar, Kevin-Druis Merenda, Samo Stanič, K. H. Kampert, J. Ridky, R.J. Barreira Luz, Martin Vacula, John Farmer, C. Morello, Heino Falcke, A. Puyleart, V. de Souza, R. Conceição, Miroslav Hrabovský, Corinne Berat, M. Giller, Isabel Goos, Luis A. Anchordoqui, A. Parra, J. Perez Armand, Kai Daumiller, D. Heck, Maria-Teresa Dova, M. R. Hampel, J. Vicha, A. Haungs, L. Bonneau Arbeletche, Peter L. Biermann, Philipp Papenbreer, M. Schimassek, M. del Río, C. Hojvat, Petr Travnicek, Jan Ebr, Claudio Galelli, Denise Boncioli, Trent D. Grubb, Paolo Privitera, P. Ristori, Jacco Vink, M. Trini, H.O. Klages, M. A. Muller, Markus Roth, Juan Manuel Figueira, Roberta Colalillo, A. G. Mariazzi, P. Savina, A. Aab, A. A. Nucita, Ralf Ulrich, Martina Bohacova, M. I. Micheletti, B. L. Lago, R.C. dos Anjos, Adriana Vásquez-Ramírez, Giovanni Mancarella, Juan Pablo Gongora, M. Palatka, P. Mantsch, A. Cancio, Z. Szadkowski, Matias Tueros, Luis A. Nunez, Paula Gina Isar, F. Salamida, V. Novotny, I. Allekotte, M. J. Roncoroni, Rossella Caruso, A. Lucero, Fernando Catalani, T. Suomijärvi, Caterina Trimarelli, A. Yushkov, D. Melo, D. Nosek, E. Santos, R. Sato, J. Pallotta, A. M. Botti, Niraj Dhital, I. Valiño, G. P. Guedes, Alessio Gorgi, A. Weindl, L. Nožka, Toshihiro Fujii, Orazio Zapparrata, Jakub Juryšek, J. Debatin, Carola Dobrigkeit, M. Muzio, Steffen Hahn, Juan Carlos D'Olivo, T. Pierog, Esteban Roulet, Justin M. Albury, Alan Watson, David Schmidt, S. Schröder, Italo Epicoco, M. Perlin, Mihai Niculescu-Oglinzanu, Piera Luisa Ghia, G. Farrar, A. Taboada, P.F. Gómez Vitale, Violet M. Harvey, D. Harari, Alina Mihaela Badescu, Cristina Galea, M. Prouza, Gaia Silli, A. Filipčič, S. Petrera, Marc Weber, Bjarni Pont, C. J.W.P. Timmermans, K. Choi, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Pierre Auger, Aab, A, Abreu, P, Aglietta, M, Albury, J M, Allekotte, I, Almela, A, Alvarez-Muñiz, J, Alves Batista, R, Anastasi, G A, Anchordoqui, L, Andrada, B, Andringa, S, Aramo, C, Araújo Ferreira, P R, Asorey, H, Assis, P, Avila, G, Badescu, A M, Bakalova, A, Balaceanu, A, Barbato, F, Barreira Luz, R J, Becker, K H, Bellido, J A, Berat, C, Bertaina, M E, Bertou, X, Biermann, P L, Bister, T, Biteau, J, Blazek, J, Bleve, C, Boháčová, M, Boncioli, D, Bonifazi, C, Bonneau Arbeletche, L, Borodai, N, Botti, A M, Brack, J, Bretz, T, Briechle, F L, Buchholz, P, Bueno, A, Buitink, S, Buscemi, M, Caballero-Mora, K S, Caccianiga, L, Cancio, A, Canfora, F, Caracas, I, Carceller, J M, Caruso, R, Castellina, A, Catalani, F, Cataldi, G, Cazon, L, Cerda, M, Chinellato, J A, Choi, K, Chudoba, J, Chytka, L, Clay, R W, Cobos Cerutti, A C, Colalillo, R, Coleman, A, Coluccia, M R, Conceição, R, Condorelli, A, Consolati, G, Contreras, F, Convenga, F, Covault, C E, Dasso, S, Daumiller, K, Dawson, B R, Day, J A, de Almeida, R M, de Jesús, J, de Jong, S J, De Mauro, G, de Mello Neto, J R T, De Mitri, I, de Oliveira, J, de Oliveira Franco, D, de Souza, V, De Vito, E, Debatin, J, Del Río, M, Deligny, O, Dembinski, H, Dhital, N, Di Matteo, A, Dobrigkeit, C, D'Olivo, J C, Dos Anjos, R C, Dova, M T, Ebr, J, Engel, R, Epicoco, I, Erdmann, M, Escobar, C O, Etchegoyen, A, Falcke, H, Farmer, J, Farrar, G, Fauth, A C, Fazzini, N, Feldbusch, F, Fenu, F, Fick, B, Figueira, J M, Filipčič, A, Fodran, T, Freire, M M, Fujii, T, Fuster, A, Galea, C, Galelli, C, García, B, Garcia Vegas, A L, Gemmeke, H, Gesualdi, F, Gherghel-Lascu, A, Ghia, P L, Giaccari, U, Giammarchi, M, Giller, M, Glombitza, J, Gobbi, F, Gollan, F, Golup, G, Gómez Berisso, M, Gómez Vitale, P F, Gongora, J P, González, N, Goos, I, Góra, D, Gorgi, A, Gottowik, M, Grubb, T D, Guarino, F, Guedes, G P, Guido, E, Hahn, S, Halliday, R, Hampel, M R, Hansen, P, Harari, D, Harvey, V M, Haungs, A, Hebbeker, T, Heck, D, Hill, G C, Hojvat, C, Hörandel, J R, Horvath, P, Hrabovský, M, Huege, T, Hulsman, J, Insolia, A, Isar, P G, Johnsen, J A, Jurysek, J, Kääpä, A, Kampert, K H, Keilhauer, B, Kemp, J, Klages, H O, Kleifges, M, Kleinfeller, J, Köpke, M, Kukec Mezek, G, Lago, B L, Lahurd, D, Lang, R G, Langner, N, Leigui de Oliveira, M A, Lenok, V, Letessier-Selvon, A, Lhenry-Yvon, I, Lo Presti, D, Lopes, L, López, R, Lorek, R, Luce, Q, Lucero, A, Lundquist, J P, Machado Payeras, A, Mancarella, G, Mandat, D, Manning, B C, Manshanden, J, Mantsch, P, Marafico, S, Mariazzi, A G, Mariş, I C, Marsella, G, Martello, D, Martinez, H, Martínez Bravo, O, Mastrodicasa, M, Mathes, H J, Matthews, J, Matthiae, G, Mayotte, E, Mazur, P O, Medina-Tanco, G, Melo, D, Menshikov, A, Merenda, K-D, Michal, S, Micheletti, M I, Miramonti, L, Mollerach, S, Montanet, F, Morello, C, Mostafá, M, Müller, A L, Muller, M A, Mulrey, K, Mussa, R, Muzio, M, Namasaka, W M, Nellen, L, Niculescu-Oglinzanu, M, Niechciol, M, Nitz, D, Nosek, D, Novotny, V, Nožka, L, Nucita, A, Núñez, L A, Palatka, M, Pallotta, J, Papenbreer, P, Parente, G, Parra, A, Pech, M, Pedreira, F, Pȩkala, J, Pelayo, R, Peña-Rodriguez, J, Perez Armand, J, Perlin, M, Perrone, L, Petrera, S, Pierog, T, Pimenta, M, Pirronello, V, Platino, M, Pont, B, Pothast, M, Privitera, P, Prouza, M, Puyleart, A, Querchfeld, S, Rautenberg, J, Ravignani, D, Reininghaus, M, Ridky, J, Riehn, F, Risse, M, Ristori, P, Rizi, V, Rodrigues de Carvalho, W, Rodriguez Rojo, J, Roncoroni, M J, Roth, M, Roulet, E, Rovero, A C, Ruehl, P, Saffi, S J, Saftoiu, A, Salamida, F, Salazar, H, Salina, G, Sanabria Gomez, J D, Sánchez, F, Santos, E M, Santos, E, Sarazin, F, Sarmento, R, Sarmiento-Cano, C, Sato, R, Savina, P, Schäfer, C M, Scherini, V, Schieler, H, Schimassek, M, Schimp, M, Schlüter, F, Schmidt, D, Scholten, O, Schovánek, P, Schröder, F G, Schröder, S, Schulte, J, Sciutto, S J, Scornavacche, M, Shellard, R C, Sigl, G, Silli, G, Sima, O, Šmída, R, Sommers, P, Soriano, J F, Souchard, J, Squartini, R, Stadelmaier, M, Stanca, D, Stanič, S, Stasielak, J, Stassi, P, Streich, A, Suárez-Durán, M, Sudholz, T, Suomijärvi, T, Supanitsky, A D, Šupík, J, Szadkowski, Z, Taboada, A, Tapia, A, Timmermans, C, Tkachenko, O, Tobiska, P, Todero Peixoto, C J, Tomé, B, Torralba Elipe, G, Travaini, A, Travnicek, P, Trimarelli, C, Trini, M, Tueros, M, Ulrich, R, Unger, M, Vaclavek, L, Vacula, M, Valdés Galicia, J F, Valiño, I, Valore, L, Varela, E, Varma K C, V, Vásquez-Ramírez, A, Veberič, D, Ventura, C, Vergara Quispe, I D, Verzi, V, Vicha, J, Vink, J, Vorobiov, S, Wahlberg, H, Watson, A A, Weber, M, Weindl, A, Wiencke, L, Wilczyński, H, Winchen, T, Wirtz, M, Wittkowski, D, Wundheiler, B, Yushkov, A, Zapparrata, O, Zas, E, Zavrtanik, D, Zavrtanik, M, Zehrer, L, Zepeda, A, High Energy Astrophys. & Astropart. Phys (API, FNWI), Gravitation and Astroparticle Physics Amsterdam, Physics, Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez-Muniz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Araujo Ferreira, P. R., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blazek, J., Bleve, C., Bohacova, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Cancio, A., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceicao, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., De Almeida, R. M., De Jesus, J., De Jong, S. J., De Mauro, G., De Mello Neto, J. R. T., De Mitri, I., De Oliveira, J., De Oliveira Franco, D., De Souza, V., De Vito, E., Debatin, J., Del Rio, M., Deligny, O., Dembinski, H., Dhital, N., Di Matteo, A., Dobrigkeit, C., D'Olivo, J. C., Dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipcic, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., Garcia, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Gomez Berisso, M., Gomez Vitale, P. F., Gongora, J. P., Gonzalez, N., Goos, I., Gora, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Halliday, R., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Horandel, J. R., Horvath, P., Hrabovsky, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Johnsen, J. A., Jurysek, J., Kaapa, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Kopke, M., Kukec Mezek, G., Lago, B. L., Lahurd, D., Lang, R. G., Langner, N., Leigui De Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., Lopez, R., Lorek, R., Luce, Q., Lucero, A., Lundquist, J. P., Machado Payeras, A., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Maris, I. C., Marsella, G., Martello, D., Martinez, H., Martinez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mollerach, S., Montanet, F., Morello, C., Mostafa, M., Muller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nozka, L., Nucita, A., Nunez, L. A., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pkala, J., Pelayo, R., Pena-Rodriguez, J., Perez Armand, J., Perlin, M., Perrone, L., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., Rodrigues De Carvalho, W., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., Sanchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schafer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schluter, F., Schmidt, D., Scholten, O., Schovanek, P., Schroder, F. G., Schroder, S., Schulte, J., Sciutto, S. J., Scornavacche, M., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Smida, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanic, S., Stasielak, J., Stassi, P., Streich, A., Suarez-Duran, M., Sudholz, T., Suomijarvi, T., Supanitsky, A. D., Supik, J., Szadkowski, Z., Taboada, A., Tapia, A., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tome, B., Torralba Elipe, G., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Vaclavek, L., Vacula, M., Valdes Galicia, J. F., Valino, I., Valore, L., Varela, E., Varma, K. C. V., Vasquez-Ramirez, A., Veberic, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczynski, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Astronomy, Aab A., Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Alvarez-Muniz J., Alves Batista R., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Araujo Ferreira P.R., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Barreira Luz R.J., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Bister T., Biteau J., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Bonneau Arbeletche L., Borodai N., Botti A.M., Brack J., Bretz T., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Cancio A., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Choi K., Chudoba J., Chytka L., Clay R.W., Cobos Cerutti A.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., De Almeida R.M., De Jesus J., De Jong S.J., De Mauro G., De Mello Neto J.R.T., De Mitri I., De Oliveira J., De Oliveira Franco D., De Souza V., De Vito E., Debatin J., Del Rio M., Deligny O., Dembinski H., Dhital N., Di Matteo A., Dobrigkeit C., D'Olivo J.C., Dos Anjos R.C., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Garcia Vegas A.L., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glombitza J., Gobbi F., Gollan F., Golup G., Gomez Berisso M., Gomez Vitale P.F., Gongora J.P., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Halliday R., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Kukec Mezek G., Lago B.L., Lahurd D., Lang R.G., Langner N., Leigui De Oliveira M.A., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Lo Presti D., Lopes L., Lopez R., Lorek R., Luce Q., Lucero A., Lundquist J.P., Machado Payeras A., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Martinez Bravo O., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., NoZka L., Nucita A., Nunez L.A., Palatka M., Pallotta J., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pkala J., Pelayo R., Pena-Rodriguez J., Perez Armand J., Perlin M., Perrone L., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Ristori P., Rizi V., Rodrigues De Carvalho W., Rodriguez Rojo J., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Sanabria Gomez J.D., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C.M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schulte J., Sciutto S.J., Scornavacche M., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Tapia A., Timmermans C., Tkachenko O., Tobiska P., Todero Peixoto C.J., Tome B., Torralba Elipe G., Travaini A., Travnicek P., Trimarelli C., Trini M., Tueros M., Ulrich R., Unger M., Vaclavek L., Vacula M., Valdes Galicia J.F., Valino I., Valore L., Varela E., Varma K. C. V., Vasquez-Ramirez A., Veberic D., Ventura C., Vergara Quispe I.D., Verzi V., Vicha J., Vink J., Vorobiov S., Wahlberg H., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., and Zepeda A.
Subjects: interaction: model, Physics::Instrumentation and Detectors, Astronomy, Hadron, General Physics and Astronomy, Ultra-high energy cosmic rays, muons properties, hadronic models, 01 natural sciences, cosmic ray, particle interaction, astroparticle detectors, Auger, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), iron, surface [detector], Observatory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics, 4. Education, Settore FIS/01 - Fisica Sperimentale, measured [fluctuation], model [interaction], Astrophysics::Instrumentation and Methods for Astrophysics, model: hadronic, fluctuation: measured, 3. Good health, observatory, Sciences exactes et naturelles, atmosphere [showers], model [particle], air, Cherenkov counter: water, Astrophysics::High Energy Astrophysical Phenomena, UHE [cosmic radiation], FOS: Physical sciences, Cosmic ray, detector: fluorescence, Nuclear physics, cosmic rays, muon, 0103 physical sciences, calorimeter, ddc:530, 14. Life underwater, cosmic radiation: UHE, High Energy Physics, distribution function, electromagnetic component, 010306 general physics, Astrophysique, Pierre Auger Observatory, fluorescence [detector], Muon, showers: atmosphere, hep-ex, detector: surface, water [Cherenkov counter], particle: model, Small deviations, Física, ASTROFÍSICA, Air shower, Experimental High Energy Physics, Elementary Particles and Fields, hadronic [model], High Energy Physics::Experiment
Abstract: The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargue. We are very grateful to the following agencies and organizations for financial support: Argentina-Comision Nacional de Energia Atomica, Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Gobierno de la Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings and Valle Las Lenas; in gratitude for their continuing cooperation over land access; Australia-the Australian Research Council; BrazilConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Sao Paulo Research Foundation (FAPESP) Grants No. 2019/10151-2, No. 2010/07359-6, and No. 1999/05404-3, Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes (MCTIC); Ministry of Education, Youth and Sports of the Czech RepublicGrants No. MSMT CR LTT18004, No. LM2015038, No. LM2018102, No. CZ.02.1.01/0.0/0.0/16_013/0001402, No. CZ.02.1.01/0.0/0.0/18_046/0016010, and No. CZ.02.1.01/0.0/0.0/17_049/0008422; France-Centre de Calcul IN2P3/CNRS, Centre National de la Recherche Scientifique (CNRS), Conseil Regional Ile-de-France, Departement Physique Nucl ' eaire et Corpusculaire (PNC-IN2P3/CNRS), Departement Sciences de l'Univers (SDU-INSU/CNRS), Institut Lagrange de Paris (ILP) Grant No. LABEX ANR-10-LABX-63 within the Investissements d'Avenir Programme Grant No. ANR11-IDEX-0004-02; Germany-Bundesministerium fur Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Finanzministerium Baden-Wurttemberg, Helmholtz Alliance for Astroparticle Physics (HAP), Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg; Italy-Istituto Nazionale di Fisica Nucleare (INFN), Istituto Nazionale di Astrofisica (INAF), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), CETEMPS Center of Excellence, Ministero degli Affari Esteri (MAE); Mexico-Consejo Nacional de Ciencia y Tecnologia (CONACYT) Grant No. 167733, Universidad Nacional Autonoma de Mexico (UNAM), PAPIIT DGAPA-UNAM; The Netherlands-Ministry of Education, Culture and Science, Netherlands Organisation for Scientific Research (NWO), Dutch national e-infrastructure with the support of SURF Cooperative; Poland-Ministry of Science and Higher Education, Grant No. DIR/WK/2018/11, National Science Centre, Grants No. 2013/08/M/ST9/00322, No. 2016/23/B/ST9/01635, and No. HARMONIA 5-2013/10/M/ST9/00062, UMO-2016/22/M/ST9/00198; Portugal -Portuguese national funds and FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE); Romania-Romanian Ministry of Education and Research, the Program Nucleu within MCI (PN19150201/16N/2019 and PN19060102), and project PN-III-P1-1.2-PCCDI-2017-0839/19PCCDI/2018 within PNCDI III; Slovenia-Slovenian Research Agency, Grants No. P1-0031, No. P1-0385, No. I00033, No. N1-0111; Spain-Ministerio de Economia, Industria y Competitividad (FPA2017-85114-P and FPA2017-85197-P), Xunta de Galicia (ED431C 2017/07), Junta de Andalucia (SOMM17/6104/UGR), Feder Funds, RENATA Red Nacional Tematica de Astroparticulas (FPA2015-68783-REDT), and Maria de Maeztu Unit of Excellence (MDM-2016-0692); U.S.Department of Energy, Awards No. DE-AC0207CH11359, No. DE-FR02-04ER41300, No. DE-FG0299ER41107, and No. DE-SC0011689, National Science Foundation, Grant No. 0450696, The Grainger Foundation, Marie Curie-IRSES/EPLANET, European Particle Physics Latin American Network, and UNESCO., We present the first measurement of the fluctuations in the number of muons in extensive air showers produced by ultrahigh energy cosmic rays. We find that the measured fluctuations are in good agreement with predictions from air shower simulations. This observation provides new insights into the origin of the previously reported deficit of muons in air shower simulations and constrains models of hadronic interactions at ultrahigh energies. Our measurement is compatible with the muon deficit originating from small deviations in the predictions from hadronic interaction models of particle production that accumulate as the showers develop., Argentina-Comision Nacional de Energia Atomica, ANPCyT, Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Gobierno de la Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings, Valle Las Lenas, Australian Research Council, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ), Fundacao de Apoio a Pesquisa do Distrito Federal (FAPDF), Financiadora de Inovacao e Pesquisa (Finep), Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) 2019/10151-2 2010/07359-6 1999/05404-3, Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes (MCTIC), Ministry of Education, Youth & Sports - Czech Republic MSMT CR LTT18004 LM2015038 LM2018102 CZ.02.1.01/0.0/0.0/16_013/0001402 CZ.02.1.01/0.0/0.0/18_046/0016010 CZ.02.1.01/0.0/0.0/17_049/0008422, France-Centre de Calcul IN2P3/CNRS, Centre National de la Recherche Scientifique (CNRS), Region Ile-de-France, Departement Sciences de l'Univers (SDU-INSU/CNRS), French National Research Agency (ANR) LABEX ANR-10-LABX-63 ANR11-IDEX-0004-02, Federal Ministry of Education & Research (BMBF), German Research Foundation (DFG), Finanzministerium Baden-Wurttemberg, Helmholtz Alliance for Astroparticle Physics (HAP), Helmholtz Association, Ministerium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg, Italy-Istituto Nazionale di Fisica Nucleare (INFN), Istituto Nazionale Astrofisica (INAF), Ministry of Education, Universities and Research (MIUR), CETEMPS Center of Excellence, Ministry of Foreign Affairs and International Cooperation (Italy), Consejo Nacional de Ciencia y Tecnologia (CONACyT) 167733, Universidad Nacional Autonoma de Mexico (UNAM), PAPIIT DGAPA-UNAM, Netherlands-Ministry of Education, Culture and Science, Netherlands Organization for Scientific Research (NWO), Dutch national e-infrastructure, SURF Cooperative, Poland-Ministry of Science and Higher Education DIR/WK/2018/11, National Science Centre, Poland 2013/08/M/ST9/00322 2016/23/B/ST9/01635 HARMONIA 5-2013/10/M/ST9/00062 UMO-2016/22/M/ST9/00198, Portugal -Portuguese national funds, FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE), Romania-Romanian Ministry of Education and Research, the Program Nucleu within MCI PN19150201/16N/2019 PN19060102, Romania-Romanian Ministry of Educatio n and Research, the Program Nucleu within PNCDI III PN-III-P1-1.2-PCCDI-2017-0839/19PCCDI/2018, Slovenian Research Agency - Slovenia P1-0031 P1-0385 I00033 N1-0111, Spain-Ministerio de Economia, Industria y Competitividad FPA2017-85114-P FPA2017-85197-P, Xunta de Galicia European Commission ED431C 2017/07, Junta de Andalucia SOMM17/6104/UGR, European Commission, RENATA Red Nacional Tematica de Astroparticulas FPA2015-68783-REDT, Maria de Maeztu Unit of Excellence MDM-2016-0692, United States Department of Energy (DOE) DE-AC0207CH11359 DE-FR02-04ER41300 DE-FG0299ER41107 DE-SC0011689, National Science Foundation (NSF) 0450696, Grainger Foundation, Marie Curie-IRSES/EPLANET, European Particle Physics Latin American Network, UNESCO
Published: 2021
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21. Distinguishing features of high altitude negative leaders as observed with LOFAR

Author: Joseph R. Dwyer, G. K. Krampah, C. Sterpka, A. Nelles, Arthur Corstanje, Heino Falcke, Stijn Buitink, Katie Mulrey, S. ter Veen, Ningyu Liu, H. Pandya, T. N. G. Trinh, Jörg P. Rachen, Jörg R. Hörandel, Tobias Winchen, Pragati Mitra, Satyendra Thoudam, Brian Hare, T. Huege, Olaf Scholten, Physics, Faculty of Sciences and Bioengineering Sciences, and Astronomy
Subjects: Atmospheric Science, 010504 meteorology & atmospheric sciences, Astronomy, Physics, High resolution, LOFAR, 010501 environmental sciences, Effects of high altitude on humans, 01 natural sciences, Thunderstorms, Lightning, Negative leaders, Radio telescope, Altitude, Corona flash, ddc:530, Radio emission, LOFAR lightning imaging, Geology, 0105 earth and related environmental sciences
Abstract: Atmospheric research 260, 105688 (2021). doi:10.1016/j.atmosres.2021.105688, We present high resolution observations of negative leaders at high altitude using the LOFAR radio telescope. We show that the structure of negative leaders at high altitude (altitudes larger than 7 km) differs in several respects from that of negative leaders at lower altitudes. In particular, the High Altitude Negative Leaders (HANLs) show very distinct steps of a few hundred meters, stepping times of the order of a few milliseconds and a filamentary structure that extends outward over several hundreds of meters; as opposed to lower altitude (�� 5 km) leaders, which have stepping times and distances around 0.01 ms and 10 m. Similar to lower altitude leaders, high altitude leaders emit copious VHF radiation from their propagating tip and have propagation velocities of the order of 10$^5$ m/s. Corona-flash like bursts can be distinguished when zooming in to meter and nanosecond scales., Published by Elsevier, Amsterdam [u.a.]
Published: 2021
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22. Time resolved 3D interferometric imaging of a section of a negative leader with LOFAR

Author: Brian Hare, S. ter Veen, Ningyu Liu, C. Sterpka, Joseph R. Dwyer, Stijn Buitink, T. Huege, Olaf Scholten, A. Nelles, Astronomy, and Physics
Subjects: Beamforming, 010504 meteorology & atmospheric sciences, Astronomy, FOS: Physical sciences, physics.ao-ph, Low frequency, 01 natural sciences, Optics, 0103 physical sciences, ddc:530, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Physics, business.industry, LOFAR, Lightning, Corona, Interferometry, Physics - Atmospheric and Oceanic Physics, Orders of magnitude (time), Atmospheric and Oceanic Physics (physics.ao-ph), Thunderstorm, business, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract: Physical review / D 104(6), 063022 (2021). doi:10.1103/PhysRevD.104.063022, We have developed a three dimensional interferometric beamforming technique for imaging lightning flashes using very-high frequency (VHF) radio data recorded from several hundred antennas with baselines up to 100 km as offered by the Low Frequency Array. The long baselines allow us to distinguish fine structures on the scale of meters, while the large number of antennas allow us to observe processes that radiate at the same intensity as the background when using a time resolution that is close to the impulse-response time of the system, 100 ns. The new beamforming imaging technique is complementary to our existing impulsive imaging technique. We apply this new tool to the imaging of four stepped negative leaders in two flashes. For one flash, we observe the dynamics of corona bursts that are emitted in the stepping process. Additionally, we show that the intensity emitted in VHF during the stepping process follows a power law over 4 orders of magnitude in intensity for four leaders in two different lightning storms., Published by Inst., Melville, NY
Published: 2021
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23. Design, upgrade and characterization of the silicon photomultiplier front-end for the AMIGA detector at the Pierre Auger Observatory

Author: Silvia Mollerach, N. Fazzini, Jonas Glombitza, F. C. T. Barbato, D. Zavrtanik, Serguei Vorobiov, J. Kleinfeller, Marcos Cerda, Denis Stanca, D. Melo, W. M. Namasaka, L. Lopes, A. C. Rovero, Alexandru Balaceanu, Carla Aramo, Julien Souchard, D. Martello, O. Martínez Bravo, K. Mulrey, Carla Bleve, Rodrigo Guedes Lang, Jaime Alvarez-Muñiz, Kevin-Druis Merenda, Alexandru Gherghel-Lascu, E. Santos, Thomas Bretz, Tiina Suomijarvi, V. Rizi, Corbin Covault, Vladimir Lenok, J. Stasielak, P. Tobiska, L. Perrone, L. Valore, R. Sato, Lino Miramonti, D. de Oliveira Franco, Lukáš Vaclavek, G. Mancarella, G. Marsella, A. Weindl, P. Savina, W. Rodrigues de Carvalho, Teresa Bister, Dalibor Nosek, M. Schimp, B. C. Manning, G. P. Guedes, Bjarni Pont, Luis A. Anchordoqui, A. Di Matteo, Marvin Gottowik, B. Keilhauer, P. Abreu, D. Ravignani, Alessio Gorgi, Maximilian Reininghaus, Flavia Gesualdi, Dusan Mandat, Sullivan Marafico, M. Risse, Orazio Zapparrata, Francesco Fenu, Ralf Ulrich, B. Wundheiler, Paul Sommers, Patricia María Hansen, Philipp Papenbreer, E. M. Santos, Eric Mayotte, Toshihiro Fujii, S. J. Sciutto, Juan Miguel Carceller, David Schmidt, J. Perez Armand, M. Gómez Berisso, S. Schröder, Italo Epicoco, Kai Daumiller, F. Sánchez, Marco Giammarchi, Nataliia Borodai, Christian Sarmiento-Cano, G. Parente, Fabrizia Canfora, K. Choi, L. Zehrer, Miroslav Pech, M. Pothast, Valerio Pirronello, C. J.W.P. Timmermans, C. M. Schäfer, C. J. Todero Peixoto, J. F. Valdés Galicia, I. De Mitri, Denise Boncioli, Jakub Juryšek, J. Debatin, Antonio Condorelli, Carola Dobrigkeit, M. Muzio, J. de Oliveira, Martin Vacula, Marcel Köpke, M. Platino, R. Alves Batista, Bruce R. Dawson, Trent D. Grubb, D. Nitz, Alejandro Almela, P. Horvath, J. Chudoba, P.O. Mazur, Darko Veberič, Julian Kemp, B. Andrada, A.L. Garcia Vegas, Sofia Andringa, M. A. Muller, A. Aab, G. Cataldi, Michael Prouza, Fred Sarazin, F. Riehn, T. Huege, Marina Scornavacche, A. Tapia, B. Tome, Josina Schulte, Alex Kääpä, Martina Bohacova, L. Nožka, G. De Mauro, F. Guarino, John Matthews, Peter Buchholz, Steffen Hahn, Claudio Galelli, Juan Carlos D'Olivo, T. Pierog, Juan Manuel Figueira, Mario Buscemi, L. R. Wiencke, Niklas Langner, Roberta Colalillo, Heino Falcke, V. Scherini, Maria Rita Coluccia, Jeffrey Brack, Olaf Scholten, Octavian Sima, Marco Aglietta, Marko Zavrtanik, H. Schieler, Esteban Roulet, A. G. Mariazzi, Justin M. Albury, Humberto Ibarguen Salazar, Hernán Asorey, M. I. Micheletti, Karl-Heinz Kampert, Antonella Castellina, Jonathan Biteau, J. Vicha, G. Farrar, Juan Pablo Gongora, K.-H. Becker, Nicolás González, Jose Chinellato, Alan Watson, H. Wilczyński, M. Suárez-Durán, Xavier Bertou, M. Perlin, Matias Tueros, Mihai Niculescu-Oglinzanu, M. Pimenta, I. Lhenry-Yvon, Jiri Blazek, E. De Vito, Giovanni Consolati, A. Zepeda, Gaetano Salina, Violet M. Harvey, D. Harari, Luis A. Nunez, Pedro Assis, P.R. Araújo Ferreira, Brian Fick, Piera Luisa Ghia, D. Lo Presti, S. J. De Jong, C. O. Escobar, A. Insolia, M. Kleifges, A.D. Supanitsky, H. Martinez, A. Etchegoyen, Marcus Niechciol, A. Taboada, J. Pȩkala, A. Fuster, Miguel Mostafa, Frank G. Schröder, Jarryd A. Day, A. Saftoiu, R.J. Barreira Luz, Tobias Winchen, Julien Manshanden, R. Conceição, A. Puyleart, Corinne Berat, M. Giller, Petr Schovanek, A.C. Cobos Cerutti, P.F. Gómez Vitale, Alina Mihaela Badescu, S. Querchfeld, Andres Travaini, E. Varela, J.D. Sanabria Gomez, Olena Tkachenko, V. Novotny, Ioana Caracas, Cristina Galea, J. R. T. de Mello Neto, L. Bonneau Arbeletche, A. Haungs, Rossella Caruso, A. Lucero, Fernando Catalani, J. Šupík, Carlo Ventura, Florian Lukas Briechle, Massimo Mastrodicasa, P. Ruehl, M. Schimassek, Caterina Trimarelli, Alena Bakalova, C. Hojvat, Jan Ebr, Ladislav Chytka, Samo Stanič, M. E. Bertaina, Markus Roth, M. HrabovskÃ, Jon Paul Lundquist, A. Menshikov, J. Hulsman, Juan Manuel González, P. Mantsch, B. L. Lago, P. Travnicek, Jacco Vink, H. Gemmeke, M. Unger, Jeffrey A. Johnsen, Z. Szadkowski, Gaia Silli, Isabel Goos, R. Squartini, A. Filipčič, D. Heck, Alfred Müller, H.O. Klages, Thomas Hebbeker, Sergio Dasso, Tristan Sudholz, S. Petrera, Marc Weber, A. Letessier-Selvon, Paula Gina Isar, M. del Río, Günter Sigl, Martín Miguel Freire, Roberto Mussa, P. Stassi, Radomir Smida, G. Medina-Tanco, A. A. Nucita, J. Rautenberg, A. Machado Payeras, B. García, R.C. Shellard, Q. Luce, F. Salamida, Maximilian Stadelmaier, R. López, Karen S. Caballero-Mora, R. M. de Almeida, A. Yushkov, Lorenzo Caccianiga, Lorenzo Cazon, G. Golup, Rodrigo Pelayo, Stijn Buitink, Martin Erdmann, François Montanet, J. de Jesús, A. Streich, Gioacchino Alex Anastasi, M. Wirtz, Eleonora Guido, Valerio Verzi, L. Nellen, Roger W Clay, Fernando Gollan, C. Morello, V. de Souza, Peter L. Biermann, Paolo Privitera, David Wittkowski, Olivier Deligny, Tomáš Fodran, Ugo Giaccari, Ioana Codrina Maris, A. C. Fauth, Carla Bonifazi, Jose A. Bellido, Fabio Convenga, G. C. Hill, I.D. Vergara Quispe, Jorge F. Soriano, Hernan Wahlberg, Ralph Engel, A. Parra, P. Ristori, M. Trini, I. Allekotte, M. J. Roncoroni, J. Pallotta, J. Ridky, A. M. Botti, Jörg R. Hörandel, H. J. Mathes, Stanislav Michal, J. Rodriguez Rojo, G. Matthiae, Fridtjof Feldbusch, Enrique Zas, Antonio Bueno, Fernando Contreras, Gualberto Avila, Dariusz Gora, John Farmer, Alan Coleman, Maria-Teresa Dova, M. R. Hampel, S. J. Saffi, F. Pedreira, Raul Sarmento, R.C. dos Anjos, Felix Schlüter, Adriana Vásquez-Ramírez, M. Palatka, Fabian Gobbi, Jesús Peña-Rodríguez, M.A. Leigui de Oliveira, High Energy Astrophys. & Astropart. Phys (API, FNWI), Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez-Muniz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Araujo Ferreira, P. R., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blazek, J., Bleve, C., Bohacova, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceicao, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jesus, J., de Jong, S. J., de Mauro, G., de Mello Neto, J. R. T., de Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Souza, V., de Vito, E., Debatin, J., del Rio, M., Deligny, O., Di Matteo, A., Dobrigkeit, C., D'Olivo, J. C., dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipcic, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., Garcia, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Gomez Berisso, M., Gomez Vitale, P. F., Gongora, J. P., Gonzalez, J. M., Gonzalez, N., Goos, I., Gora, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Horandel, J. R., Horvath, P., Hrabovsky, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Johnsen, J. A., Jurysek, J., Kaapa, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Kopke, M., Lago, B. L., Lang, R. G., Langner, N., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., Lopez, R., Luce, Q., Lucero, A., Lundquist, J. P., Machado Payeras, A., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Maris, I. C., Marsella, G., Martello, D., Martinez, H., Martinez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mollerach, S., Montanet, F., Morello, C., Mostafa, M., Muller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nozka, L., Nucita, A., Nunez, L. A., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pekala, J., Pelayo, R., Pena-Rodriguez, J., Perez Armand, J., Perlin, M., Perrone, L., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., Sanchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schafer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schluter, F., Schmidt, D., Scholten, O., Schovanek, P., Schroder, F. G., Schroder, S., Schulte, J., Sciutto, S. J., Scornavacche, M., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Smida, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanic, S., Stasielak, J., Stassi, P., Streich, A., Suarez-Duran, M., Sudholz, T., Suomijarvi, T., Supanitsky, A. D., Supik, J., Szadkowski, Z., Taboada, A., Tapia, A., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tome, B., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Vaclavek, L., Vacula, M., Valdes Galicia, J. F., Valore, L., Varela, E., Varma, V. K. C., Vasquez-Ramirez, A., Veberic, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczynski, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Pierre Auger, Physics, Aab A., Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Alvarez-Muniz J., Alves Batista R., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Araujo Ferreira P.R., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Barreira Luz R.J., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Bister T., Biteau J., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Bonneau Arbeletche L., Borodai N., Botti A.M., Brack J., Bretz T., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Choi K., Chudoba J., Chytka L., Clay R.W., Cobos Cerutti A.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., de Almeida R.M., de Jesus J., de Jong S.J., de Mauro G., de Mello Neto J.R.T., de Mitri I., de Oliveira J., de Oliveira Franco D., de Souza V., de Vito E., Debatin J., del Rio M., Deligny O., Di Matteo A., Dobrigkeit C., D'Olivo J.C., dos Anjos R.C., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Garcia Vegas A.L., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glombitza J., Gobbi F., Gollan F., Golup G., Gomez Berisso M., Gomez Vitale P.F., Gongora J.P., Gonzalez J.M., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Lago B.L., Lang R.G., Langner N., Leigui de Oliveira M.A., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Lo Presti D., Lopes L., Lopez R., Luce Q., Lucero A., Lundquist J.P., Machado Payeras A., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Martinez Bravo O., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Nozka L., Nucita A., Nunez L.A., Palatka M., Pallotta J., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pekala J., Pelayo R., Pena-Rodriguez J., Perez Armand J., Perlin M., Perrone L., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Ristori P., Rizi V., Rodrigues de Carvalho W., Rodriguez Rojo J., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Sanabria Gomez J.D., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C.M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schulte J., Sciutto S.J., Scornavacche M., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Tapia A., Timmermans C., Tkachenko O., Tobiska P., Todero Peixoto C.J., Tome B., Travaini A., Travnicek P., Trimarelli C., Trini M., Tueros M., Ulrich R., Unger M., Vaclavek L., Vacula M., Valdes Galicia J.F., Valore L., Varela E., Varma V.K.C., Vasquez-Ramirez A., Veberic D., Ventura C., Vergara Quispe I.D., Verzi V., Vicha J., Vink J., Vorobiov S., Wahlberg H., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., Zepeda A., and Research unit Astroparticle Physics
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astronomy, Performance of High Energy Physics Detector, 01 natural sciences, 7. Clean energy, Etc), 030218 nuclear medicine & medical imaging, 0302 clinical medicine, Front-end electronics for detector readout, APDs, Instrumentation, physics.ins-det, Photon detectors for UV, Mathematical Physics, Instrumentation et méthodes en physique, EBCCDs, Visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc), electronics, Settore FIS/01 - Fisica Sperimentale, Calibration and fitting methods, Performance of High Energy Physics Detectors, Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc), Astrophysics::Instrumentation and Methods for Astrophysics, Si-PMTs, Instrumentation and Detectors (physics.ins-det), charged particle, CCDs, Cluster finding, CMOS imagers, EMCCDs, Pattern recognition, G-APDs, Visible and IR photons (solid-state) (PIN diodes, Auger, observatory, density [muon], Pattern recognition, cluster finding, calibration and fitting method, Christian ministry, upgrade, ddc:620, Astrophysics - Instrumentation and Methods for Astrophysics, performance, atmosphere [showers], Land access, Cherenkov counter: water, air, Astrophysics::High Energy Astrophysical Phenomena, UHE [cosmic radiation], FOS: Physical sciences, 03 medical and health sciences, Political science, 0103 physical sciences, muon: density, photomultiplier: silicon, High Energy Physics, cosmic radiation: UHE, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], ddc:610, Instrumentation and Methods for Astrophysics (astro-ph.IM), Engineering & allied operations, scintillation counter, showers: atmosphere, 010308 nuclear & particles physics, water [Cherenkov counter], Autres mathématiques, Research council, efficiency, Experimental High Energy Physics, silicon [photomultiplier], High Energy Physics::Experiment, Humanities, RAIOS CÓSMICOS, astro-ph.IM
Abstract: The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargue. We are very grateful to the following agencies and organizations for financial support: Argentina -Comision Nacional de Energia Atomica; Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargue; NDM Holdings and Valle Las Lenas; in gratitude for their continuing cooperation over land access; Australia -the Australian Research Council; Brazil -Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Financiadora de Estudos e Projetos (FINEP); Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ); Sao Paulo Research Foundation (FAPESP) Grants No. 2019/10151-2, No. 2010/07359-6 and No. 1999/05404-3; Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes (MCTIC); Czech Republic Grant No. MSMT CR LTT18004, LM2015038, LM2018102, CZ.02.1.01/0.0/0.0/16_013/0001402, CZ.02.1.01/0.0/0.0/18_046/0016010 and CZ.02.1.01/0.0/0.0/17_049/0008422; France -Centre de Calcul IN2P3/CNRS; Centre National de la Recherche Scientifique (CNRS); Conseil Regional Ile-de-France; Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS); Departement Sciences de l'Univers (SDU-INSU/CNRS); Institut Lagrange de Paris (ILP) Grant No. LABEX ANR-10-LABX-63 within the Investissements d'Avenir Programme Grant No. ANR-11-IDEX-0004-02; Germany-Bundesministerium fur Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Finanzministerium Baden-Wurttemberg; Helmholtz Alliance for Astroparticle Physics (HAP); Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF); Ministerium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen; Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg; Italy-Istituto Nazionale di Fisica Nucleare (INFN); Istituto Nazionale di Astrofisica (INAF); Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR); CETEMPS Center of Excellence; Ministero degli Affari Esteri (MAE); Mexico-Consejo Nacional de Ciencia y Tecnologia (CONACYT) No. 167733; Universidad Nacional Autonoma de Mexico (UNAM); PAPIIT DGAPA-UNAM; The Netherlands -Ministry of Education, Culture and Science; Netherlands Organisation for Scientific Research (NWO); Dutch national e-infrastructure with the support of SURF Cooperative; Poland-Ministry of Science and Higher Education, grant No. DIR/WK/2018/11; National Science Centre, Grants No. 2013/08/M/ST9/00322, No. 2016/23/B/ST9/01635 and No. HARMONIA 5-2013/10/M/ST9/00062, UMO-2016/22/M/ST9/00198; Portugal -Portuguese national funds and FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE); Romania-Romanian Ministry of Education and Research, the Program Nucleu within MCI(PN19150201/16N/2019 and PN19060102) and project PN-III-P1-1.2-PCCDI-2017-0839/19PCCDI/2018 within PNCDI III; Slovenia -Slovenian Research Agency, grants P1-0031, P1-0385, I0-0033, N1-0111; Spain-Ministerio de Economia, Industria y Competitividad (FPA2017-85114-P and FPA2017-85197-P), Xunta de Galicia (ED431C 2017/07), Junta de Andalucia (SOMM17/6104/UGR), Feder Funds, RENATA Red Nacional Tematica de Astroparticulas (FPA2015-68783-REDT) and Maria de Maeztu Unit of Excellence (MDM-2016-0692); U.S.A. -Department of Energy, Contracts No. DE-AC02-07CH11359, No. DE-FR02-04ER41300, No. DE-FG02-99ER41107 and No. DE-SC0011689; National Science Foundation, Grant No. 0450696; The Grainger Foundation; Marie Curie-IRSES/EPLANET; European Particle Physics Latin American Network; and UNESCO., AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to complement the study of ultra-high-energy cosmic rays (UHECR) by measuring the muon content of extensive air showers (EAS). It consists of an array of 61 water Cherenkov detectors on a denser spacing in combination with underground scintillation detectors used for muon density measurement. Each detector is composed of three scintillation modules, with 10 m(2) detection area per module, buried at 2.3 m depth, resulting in a total detection area of 30 m(2). Silicon photomultiplier sensors (SiPM) measure the amount of scintillation light generated by charged particles traversing the modules. In this paper, the design of the front-end electronics to process the signals of those SiPMs and test results from the laboratory and from the Pierre Auger Observatory are described. Compared to our previous prototype, the new electronics shows a higher performance, higher efficiency and lower power consumption, and it has a new acquisition system with increased dynamic range that allows measurements closer to the shower core. The new acquisition system is based on the measurement of the total charge signal that the muonic component of the cosmic ray shower generates in the detector., Argentina - Comision Nacional de Energia Atomica, Argentina - Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT), Argentina - Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Argentina - Gobierno de la Provincia de Mendoza, Argentina - Municipalidad de Malargue, Argentina - NDM Holdings, Argentina - Valle Las Lenas, Australian Research Council, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) Fundacao de Apoio a Pesquisa do Distrito Federal (FAPDF) Brazil - Financiadora de Estudos e Projetos (FINEP), Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) 2019/10151-2 2010/07359-6 1999/05404-3, Brazil - Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes (MCTIC), Brazil - Czech Republic Grant MSMT CR LTT18004 LM2015038 LM2018102 CZ.02.1.01/0.0/0.0/16_013/0001402 CZ.02.1.01/0.0/0.0/18_046/0016010 CZ.02.1.01/0.0/0.0/17_049/0008422, France - Centre de Calcul IN2P3/CNRS, Centre National de la Recherche Scientifique (CNRS), France - Conseil Regional Ile-de-France, France - Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), France - Departement Sciences de l'Univers (SDU-INSU/CNRS), French National Research Agency (ANR) LABEX ANR-10-LABX-63, Institut Lagrange de Paris (ILP) within the Investissements d'Avenir Programme ANR-11-IDEX-0004-02, Federal Ministry of Education & Research (BMBF), Bundesministerium fur Bildung und Forschung (BMBF), German Research Foundation (DFG), Germany - Finanzministerium Baden-Wurttemberg, Germany - Helmholtz Alliance for Astroparticle Physics (HAP), Germany - Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany - Ministerium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, Germany - Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg, Italy - Istituto Nazionale di Fisica Nucleare (INFN), Italy - Istituto Nazionale di Astrofisica (INAF), Italy - Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy - CETEMPS Center of Excellence, Consejo Nacional de Ciencia y Tecnologia (CONACyT) 167733, Mexico - Universidad Nacional Autonoma de Mexico (UNAM), Mexico - PAPIIT DGAPA-UNAM, Netherlands - Ministry of Education, Culture and Science, Netherlands Organization for Scientific Research (NWO), Netherlands Organisation for Scientific Research (NWO), The Netherlands - SURF Cooperative, Poland - Ministry of Science and Higher Education DIR/WK/2018/11 Poland - National Science Centre 2013/08/M/ST9/00322 2016/23/B/ST9/01635 HARMONIA 5-2013/10/M/ST9/00062 UMO-2016/22/M/ST9/00198, Portugal - Portuguese national funds Portugal - FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE), Romania - Romanian Ministry of Education and Research Romania - Program Nucleu within MCI PN19150201/16N/2019 PN19060102 Romania - PNCDI III PN-III-P1-1.2-PCCDI-2017-0839/19PCCDI/2018, Slovenian Research Agency - Slovenia P1-0031 P1-0385 I0-0033 N1-0111, Spain - Ministerio de Economia, Industria y Competitividad FPA2017-85114-P FPA2017-85197-P, Spain - Xunta de Galicia ED431C 2017/07, Junta de Andalucia SOMM17/6104/UGR, Spain - Feder Funds, Spain - RENATA Red Nacional Tematica de Astroparticulas FPA2015-68783-REDT, Spain - Maria de Maeztu Unit of Excellence MDM-2016-0692, United States Department of Energy (DOE) DE-AC02-07CH11359, National Science Foundation (NSF) 0450696, U.S.A. - Grainger Foundation U.S.A. - Marie Curie-IRSES/EPLANET U.S.A. - European Particle Physics Latin American Network U.S.A. - UNESCO, Italy - Ministero degli Affari Esteri (MAE), The Netherlands - Dutch national e-infrastructure
Published: 2021
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24. Timing Calibration and Windowing Technique Comparison for Lightning Mapping Arrays

Author: Brian Hare, Paul R. Krehbiel, S. ter Veen, T. N. G. Trinh, Harald E. Edens, Satyendra Thoudam, Jörg P. Rachen, Jörg R. Hörandel, Anna Nelles, Heino Falcke, H. Pandya, Olaf Scholten, Pragati Mitra, Arthur Corstanje, W. Rison, Tobias Winchen, Stijn Buitink, Katie Mulrey, G. K. Krampah, Tim Huege, Physics, Faculty of Sciences and Bioengineering Sciences, Astronomy, and Research unit Astroparticle Physics
Subjects: 010504 meteorology & atmospheric sciences, Astronomy, Atmospheric Electricity, QB1-991, Environmental Science (miscellaneous), 010502 geochemistry & geophysics, 01 natural sciences, Radio telescope, Set (abstract data type), 0103 physical sciences, Limit (music), ddc:550, Calibration, Astronomical interferometer, ddc:530, 010303 astronomy & astrophysics, Antenna Arrays, 0105 earth and related environmental sciences, Remote sensing, QE1-996.5, business.industry, Physics, Electromagnetics, Geology, LOFAR, Lightning, Atmospheric Processes, Global Positioning System, General Earth and Planetary Sciences, business, Research Article
Abstract: Earth and Space Science 8(7), 2020EA001523 (2021). doi:10.1029/2020EA001523, Since their introduction 22 years ago, lightning mapping arrays (LMA) have played a central role in the investigation of lightning physics. Even in recent years with the proliferation of digital interferometers and the introduction of the LOw Frequency ARray (LOFAR) radio telescope, LMAs still play an important role in lightning science. LMA networks use a simple windowing technique that records the highest pulse in either 80 ��s or 10 ��s fixed windows in order to apply a time-of-arrival location technique. In this work, we develop an LMA-emulator that uses lightning data recorded by LOFAR to simulate an LMA, and we use it to test three new styles of pulse windowing. We show that they produce very similar results as the more traditional LMA windowing, implying that LMA lightning mapping results are relatively independent of windowing technique. In addition, each LMA station has its GPS-conditioned clock. While the timing accuracy of GPS receivers has improved significantly over the years, they still significantly limit the timing measurements of the LMA. Recently, new time-of-arrival techniques have been introduced that can be used to self-calibrate systematic offsets between different receiving stations. Applying this calibration technique to a set of data with 32 ns uncertainty, observed by the Colorado LMA, improves the timing uncertainty to 19 ns. This technique is not limited to LMAs and could be used to help calibrate future multi-station lightning interferometers., Published by American Geophysical Union, Malden, Mass.
Published: 2021
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25. Deep-learning based reconstruction of the shower maximum X max using the water-Cherenkov detectors of the Pierre Auger Observatory

Author: A. Segreto, Günter Sigl, Orazio Zapparrata, P. Stassi, Radomir Smida, A. Machado Payeras, G. Cataldi, V. Scherini, Carola Dobrigkeit, M. Muzio, Marcio Aparecido Muller, Srijan Sehgal, Fernando Gollan, Carla Bleve, Rodrigo Guedes Lang, M. E. Bertaina, F. de Palma, Alan Watson, M. Perlin, Mihai Niculescu-Oglinzanu, L. Valore, Belén Andrada, Marina Scornavacche, V. de Souza, G. Golup, Violet M. Harvey, D. Harari, N. Kunka, T. Bister, F. Riehn, P. Tobiska, Jonathan Biteau, M. I. Micheletti, A. Insolia, Jesús Peña-Rodríguez, Matías J. Roncoroni, Sullivan Marafico, M. Kleifges, D. Zavrtanik, Marco Giammarchi, R.J. Barreira Luz, D. Melo, G. P. Guedes, F. Salamida, N. Fazzini, Jonas Glombitza, F. C. T. Barbato, A. Yushkov, Alina Mihaela Badescu, Ioana Codrina Maris, R. Sato, Lourenco Lopes, Toshihiro Fujii, S. Schröder, Italo Epicoco, Marvin Gottowik, Cristina Galea, M. Prouza, Brian Fick, Xavier Bertou, A. Di Matteo, Julian Kemp, Eric Mayotte, D. Nitz, Esteban Roulet, P. Abreu, D. Ravignani, R. M. de Almeida, K. H. Kampert, J. C. Arteaga Velázquez, J. Kleinfeller, A. Zepeda, M. Gómez Berisso, R. C. Shellard, Roberto Mussa, A. Puyleart, Jakub Juryšek, Petr Hamal, Steffen Hahn, Juan Carlos D'Olivo, Julien Manshanden, Lorenzo Caccianiga, Pedro Assis, H. Martinez, A. Etchegoyen, G. C. Hill, Corinne Berat, M. Giller, Jan Pękala, Rúben Conceição, Valerio Verzi, B. Tome, J. Chudoba, L. Lu, H. J. Mathes, Stanislav Michal, B. Wundheiler, Andres Travaini, K. Choi, Alex Kääpä, Ralph Engel, Flavia Gesualdi, J. Perez Armand, E. Varela, D. Correia dos Santos, J. Ridky, L. R. Wiencke, T. Pierog, François Montanet, Justin M. Albury, P. L. Ghia, Marcel Köpke, M. Platino, J.D. Sanabria Gomez, Rodrigo Pelayo, Jose J. Gonzalez, Stijn Buitink, Katie Mulrey, Carlos Escobar, G. De Mauro, Kevin-Druis Merenda, Vladimir Lenok, L. Perrone, H. Schieler, C. J. Todero Peixoto, Mario Buscemi, D. Nosek, E. Santos, Niklas Langner, Antonella Castellina, Eleonora Guido, Antonio Condorelli, M. Risse, Jörg R. Hörandel, J. F. Valdés Galicia, I. De Mitri, Jonathan Blazek, Jose Chinellato, J. Rodriguez Rojo, Fridtjof Feldbusch, A.L. Garcia Vegas, Enrique Zas, I. Lhenry-Yvon, C. Trimarelli, Gaia Silli, A. Filipčič, A.D. Supanitsky, Philipp Papenbreer, Claudio Galelli, A. Weindl, M. Suárez-Durán, J. Stasielak, T. Huege, Hernán Gonzalo Asorey, L. Nellen, L. Anchordoqui, Alena Bakalova, C. Morello, Miroslav Hrabovský, Petr Travnicek, Trent D. Grubb, G. Parente, Fabrizia Canfora, Fernando Contreras, A. Haungs, Juan Manuel Figueira, Roberta Colalillo, Paul Sommers, Clara Keiko Oliveira Watanabe, B. García, M. Schimp, A. G. Mariazzi, R. López, Karen S. Caballero-Mora, H. Wilczyński, Ioana Caracas, A. Letessier-Selvon, Lorenzo Cazon, C. Pérez Bertolli, F. Sanchez, F. Sarazin, S. Petrera, Marc Weber, David Schmidt, G. Farrar, L. Zehrer, J. de Oliveira, Alejandro Almela, P. Mantsch, Z. Szadkowski, M. Schimassek, C. Hojvat, Jan Ebr, Jacco Vink, Peter L. Biermann, L. Bonneau Arbeletche, Maximilian Reininghaus, Paolo Privitera, M. A. Leigui de Oliveira, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, Martin Erdmann, J. de Jesús, A. Taboada, G. Marsella, E. M. Santos, A. Gorgi, H.O. Klages, B. C. Manning, Dariusz Gora, Bjarni Pont, Thomas Bretz, Petr Janecek, Corbin Covault, Matías Rolf Hampel, Frank G. Schröder, R. Squartini, Alfred Müller, P.F. Gómez Vitale, A. Streich, Gioacchino Alex Anastasi, M. Wirtz, David Wittkowski, G. Salina, Roger W Clay, Olivier Deligny, W. M. Namasaka, M. Mastrodicasa, A. C. Rovero, Alexandru Balaceanu, A. A. Nucita, Alan Coleman, Lino Miramonti, S. J. Saffi, Lukáš Vaclavek, J. F. Soriano, D. de Oliveira Franco, R. Alves Batista, Bruce R. Dawson, Octavian Sima, Ana Martina Botti, Jeffrey Brack, Olaf Scholten, P.O. Mazur, K.-H. Becker, Maria Rita Coluccia, Dusan Mandat, Francesco Fenu, Humberto Ibarguen Salazar, M. Pimenta, Tomáš Fodran, Alina Nasr-Esfahani, P.R. Araújo Ferreira, Tobias Winchen, G. Mancarella, B. Keilhauer, Florian Lukas Briechle, Darko Veberič, Ugo Giaccari, S. J. Sciutto, F. Pedreira, Christian Sarmiento-Cano, Raul Sarmento, G. Medina-Tanco, Felix Schlüter, P. Ruehl, Carla Aramo, Vincenzo Rizi, C. J.W.P. Timmermans, Julien Souchard, Jon Paul Lundquist, A. Menshikov, D. Martello, Juan Miguel Carceller, C. M. Schäfer, Markus Roth, Silvia Mollerach, O. Martínez Bravo, Isabel Goos, D. Heck, A. Tapia, Josina Schulte, Peter Hansen, M. del Río, H. Gemmeke, Fabian Gobbi, B. L. Lago, P. Savina, W. Rodrigues de Carvalho, Denise Boncioli, M. Unger, F. Guarino, John Matthews, Peter Buchholz, Marco Aglietta, Miguel Mostafa, E.E. Pereira Martins, Serguei Vorobiov, Martina Bohacova, Miroslav Pech, M. Pothast, J. Hulsman, J. Rautenberg, Pavel Horvath, Q. Luce, Marcus Niechciol, Juan Pablo Gongora, Paula Gina Isar, Sofia Andringa, Maximilian Stadelmaier, Nataliia Borodai, Marcos Cerda, D. Lo Presti, S. J. De Jong, Samo Stanič, Jarryd A. Day, A. Saftoiu, A.C. Cobos Cerutti, Martin Vacula, J. R. T. de Mello Neto, V. Novotny, V. K.C. Varma, Rossella Caruso, A. Lucero, Fernando Catalani, N. González, Kai Daumiller, Heino Falcke, S. Querchfeld, Olena Tkachenko, Thomas Hebbeker, Sergio Dasso, Tristan Sudholz, J. Šupík, Carlo Ventura, Martín Miguel Freire, V. Pirronello, J. Vicha, Ladislav Chytka, A. Aab, Carla Taricco, Matias Tueros, Luis A. Nunez, T. Suomijärvi, J. Pallotta, Hernan Wahlberg, A. Parra, A. Fuster, M. Trini, P.G. Brichetto Orchera, I. Allekotte, A. C. Fauth, Carla Bonifazi, Jose A. Bellido, Fabio Convenga, I.D. Vergara Quispe, M. Zavrtanik, E. De Vito, Giovanni Consolati, Petr Schovanek, Denis Stanca, Ralf Ulrich, L. Nožka, G. Matthiae, Antonio Bueno, Gualberto Avila, John Farmer, Maria-Teresa Dova, R.C. dos Anjos, Adriana Vásquez-Ramírez, M. Palatka, Jeffrey A. Johnsen, Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez-Mu??iz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Ara??jo Ferreira, P. R., Arteaga Vel??zquez, J. C., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blazek, J., Bleve, C., Boh????ov??, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Brichetto Orchera, P. G., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Concei????o, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Correia dos Santos, D., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jes??s, J., de Jong, S. J., De Mauro, G., de Mello Neto, J. R. T., De Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Palma, F., de Souza, V., De Vito, E., del R??o, M., Deligny, O., Di Matteo, A., Dobrigkeit, C., D'Olivo, J. C., dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filip??i??, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., Garc??a, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., G??mez Berisso, M., G??mez Vitale, P. F., Gongora, J. P., Gonz??lez, J. M., Gonz??lez, N., Goos, I., G??ra, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Hamal, P., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., H??randel, J. R., Horvath, P., Hrabovsk??, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Janecek, P., Johnsen, J. A., Jurysek, J., K????p??, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., K??pke, M., Kunka, N., Lago, B. L., Lang, R. G., Langner, N., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., L??pez, R., Lu, L., Luce, Q., Lucero, A., Lundquist, J. P., Machado Payeras, A., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Mari??, I. C., Marsella, G., Martello, D., Martinez, H., Mart??nez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mollerach, S., Montanet, F., Morello, C., Mostaf??, M., M??ller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nasr-Esfahani, A., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., No??ka, L., Nucita, A., N????ez, L. A., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., P??kala, J., Pelayo, R., Pe??a-Rodriguez, J., Pereira Martins, E. E., Perez Armand, J., P??rez Bertolli, C., Perlin, M., Perrone, L., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., S??nchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Sch??fer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schl??ter, F., Schmidt, D., Scholten, O., Schov??nek, P., Schr??der, F. G., Schr??der, S., Schulte, J., Sciutto, S. J., Scornavacche, M., Segreto, A., Sehgal, S., Shellard, R. C., Sigl, G., Silli, G., Sima, O., m??da, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stani??, S., Stasielak, J., Stassi, P., Streich, A., Su??rez-Dur??n, M., Sudholz, T., Suomij??rvi, T., Supanitsky, A. D., up??k, J., Szadkowski, Z., Taboada, A., Tapia, A., Taricco, C., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tom??, B., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Vaclavek, L., Vacula, M., Galicia, J. F. Vald??s., Valore, L., Varela, E., Varma K. C., V., V??squez-Ram??rez, A., Veberi??, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Vink, J., Vorobiov, S., Wahlberg, H., Watanabe, C., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczy??ski, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., High Energy Astrophys. & Astropart. Phys (API, FNWI), Gravitation and Astroparticle Physics Amsterdam, Astronomy and Astrophysics Research Group, Physics, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Pierre Auger, Aab A., Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Alvarez-Muniz J., Batista R.A., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Ferreira P.R.A., Velazquez J.C.A., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Luz R.J.B., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Bister T., Biteau J., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Arbeletche L.B., Borodai N., Botti A.M., Brack J., Bretz T., Orchera P.G.B., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Choi K., Chudoba J., Chytka L., Clay R.W., Cerutti A.C.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., dos Santos D.C., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., de Almeida R.M., de Jesus J., de Jong S.J., de Mauro G., de Mello Neto J.R.T., de Mitri I., de Oliveira J., de Oliveira Franco D., de Palma F., de Souza V., de Vito E., del Rio M., Deligny O., Di Matteo A., Dobrigkeit C., D'Olivo J.C., dos Anjos R.C., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Vegas A.L.G., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glombitza J., Gobbi F., Gollan F., Golup G., Berisso M.G., Vitale P.F.G., Gongora J.P., Gonzalez J.M., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Hamal P., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Janecek P., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Kunka N., Lago B.L., Lang R.G., Langner N., de Oliveira M.A.L., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Presti D.L., Lopes L., Lopez R., Lu L., Luce Q., Lucero A., Lundquist J.P., Payeras A.M., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Bravo O.M., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nasr-Esfahani A., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Nozka L., Nucita A., Nunez L.A., Palatka M., Pallotta J., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pekala J., Pelayo R., Pena-Rodriguez J., Martins E.E.P., Armand J.P., Bertolli C.P., Perlin M., Perrone L., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Rizi V., Rodrigues de Carvalho W., Rojo J.R., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Gomez J.D.S., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C.M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schulte J., Sciutto S.J., Scornavacche M., Segreto A., Sehgal S., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Tapia A., Taricco C., Timmermans C., Tkachenko O., Tobiska P., Peixoto C.J.T., Tome B., Travaini A., Travnicek P., Trimarelli C., Trini M., Tueros M., Ulrich R., Unger M., Vaclavek L., Vacula M., Galicia J.F.V., Valore L., Varela E., Varma V.K.C., Vasquez-Ramirez A., Veberic D., Ventura C., Quispe I.D.V., Verzi V., Vicha J., Vink J., Vorobiov S., Wahlberg H., Watanabe C., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., Zepeda A., Research unit Astroparticle Physics, Alvarez-Muniz, J., Batista, R. A., Ferreira, P. R. A., Velazquez, J. C. A., Luz, R. J. B., Bohacova, M., Arbeletche, L. B., Orchera, P. G. B., Cerutti, A. C. C., Conceicao, R., dos Santos, D. C., de Jesus, J., de Mauro, G., de Mitri, I., de Vito, E., del Rio, M., Filipcic, A., Garcia, B., Vegas, A. L. G., Berisso, M. G., Vitale, P. F. G., Gonzalez, J. M., Gonzalez, N., Gora, D., Horandel, J. R., Hrabovsky, M., Kaapa, A., Kopke, M., de Oliveira, M. A. L., Presti, D. L., Lopez, R., Payeras, A. M., Maris, I. C., Bravo, O. M., Mostafa, M., Muller, A. L., Nozka, L., Nunez, L. A., Pekala, J., Pena-Rodriguez, J., Martins, E. E. P., Armand, J. P., Bertolli, C. P., Rojo, J. R., Gomez, J. D. S., Sanchez, F., Schafer, C. M., Schluter, F., Schovanek, P., Schroder, F. G., Schroder, S., Smida, R., Stanic, S., Suarez-Duran, M., Suomijarvi, T., Supik, J., Peixoto, C. J. T., Tome, B., Galicia, J. F. V., Varma, V. K. C., Vasquez-Ramirez, A., Veberic, D., Quispe, I. D. V., and Wilczynski, H.
Subjects: showers: energy, longitudinal [showers], interaction: model, Physics::Instrumentation and Detectors, Astronomy, Calibration and fitting methods, Cluster finding, Data analysis, Large detector systems for particle and astroparticle physics, Particle identification methods, Pattern recognition, 01 natural sciences, High Energy Physics - Experiment, Auger, High Energy Physics - Experiment (hep-ex), cluster finding, surface [detector], Observatory, Large detector systems, Instrumentation, Mathematical Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Physics, Pattern recognition, cluster finding, calibration and fitting methods, Settore FIS/01 - Fisica Sperimentale, model [interaction], Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Data analysi, calibration and fitting methods, energy [showers], observatory, Pattern recognition, cluster finding, calibration and fitting method, astroparticle physics, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, atmosphere [showers], air, neural network, Astrophysics::High Energy Astrophysical Phenomena, UHE [cosmic radiation], FOS: Physical sciences, Cosmic ray, detector: fluorescence, 0103 physical sciences, ddc:530, High Energy Physics, ddc:610, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], cosmic radiation: UHE, structure, particle physics, network: performance, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Ciencias Exactas, Cherenkov radiation, fluorescence [detector], Pierre Auger Observatory, mass spectrum [nucleus], showers: atmosphere, detector: surface, hep-ex, 010308 nuclear & particles physics, Física, resolution, calibration, Computational physics, performance [network], Cherenkov counter, Air shower, Large detector systems for particle and astroparticle physic, Experimental High Energy Physics, High Energy Physics::Experiment, nucleus: mass spectrum, showers: longitudinal, RAIOS CÓSMICOS, Energy (signal processing), astro-ph.IM
Abstract: The atmospheric depth of the air shower maximum $X_{\mathrm{max}}$ is an observable commonly used for the determination of the nuclear mass composition of ultra-high energy cosmic rays. Direct measurements of $X_{\mathrm{max}}$ are performed using observations of the longitudinal shower development with fluorescence telescopes. At the same time, several methods have been proposed for an indirect estimation of $X_{\mathrm{max}}$ from the characteristics of the shower particles registered with surface detector arrays. In this paper, we present a deep neural network (DNN) for the estimation of $X_{\mathrm{max}}$. The reconstruction relies on the signals induced by shower particles in the ground based water-Cherenkov detectors of the Pierre Auger Observatory. The network architecture features recurrent long short-term memory layers to process the temporal structure of signals and hexagonal convolutions to exploit the symmetry of the surface detector array. We evaluate the performance of the network using air showers simulated with three different hadronic interaction models. Thereafter, we account for long-term detector effects and calibrate the reconstructed $X_{\mathrm{max}}$ using fluorescence measurements. Finally, we show that the event-by-event resolution in the reconstruction of the shower maximum improves with increasing shower energy and reaches less than $25~\mathrm{g/cm^{2}}$ at energies above $2\times 10^{19}~\mathrm{eV}$., Published version, 29 pages, 12 figures
Published: 2021
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26. Needle Propagation and Twinkling Characteristics

Author: Arthur Corstanje, C. Strepka, Brian Hare, Jörg P. Rachen, Jörg R. Hörandel, T. Huege, Olaf Scholten, Tobias Winchen, Heino Falcke, G. K. Krampah, H. Pandya, Satyendra Thoudam, Pragati Mitra, Joseph R. Dwyer, A. Nelles, Stijn Buitink, Katie Mulrey, S. ter Veen, T. N. G. Trinh, Astronomy, Physics, and Faculty of Sciences and Bioengineering Sciences
Subjects: Physics, Atmospheric Science, business.industry, Astronomy, imaging, LOFAR, needles, Lightning, VHF, Geophysics, Optics, Recoil, Space and Planetary Science, ddc:550, Earth and Planetary Sciences (miscellaneous), ddc:530, mapping, business, lightning, Twinkling
Abstract: Journal of geophysical research / D 126(6), JD034252 (2021). doi:10.1029/2020JD034252, Recently, a new lightning phenomena, termed needles, has been observed in both VHF and in optical along positive lightning leaders. They appear as small (, Published by Wiley, Hoboken, NJ
Published: 2021
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27. The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory

Author: A. C. Fauth, Vladimir Lenok, L. Perrone, M. I. Micheletti, M. Risse, Jonathan Blazek, Alessio Gorgi, Carla Bonifazi, Jose A. Bellido, Fabio Convenga, Marvin Gottowik, G. Matthiae, Brian Fick, Orazio Zapparrata, Antonio Bueno, Carola Dobrigkeit, M. Muzio, G. Parente, D. Melo, J. Rautenberg, M. E. Bertaina, Abha Khakurdikar, P. Abreu, Fabrizia Canfora, D. Ravignani, L. Bonneau Arbeletche, L. Zehrer, Q. Luce, M. Schimassek, C. Hojvat, Jan Ebr, Alan Watson, I.D. Vergara Quispe, G. P. Guedes, Toshihiro Fujii, Jakub Juryšek, Petr Hamal, Steffen Hahn, Juan Carlos D'Olivo, T. Pierog, Eric Mayotte, Esteban Roulet, M. Gómez Berisso, R. C. Shellard, Justin M. Albury, P. L. Ghia, Gualberto Avila, Sara Martinelli, M. Perlin, Mihai Niculescu-Oglinzanu, Zoé Torrès, Dariusz Gora, B. Tome, Josina Schulte, Maximilian Stadelmaier, F. Riehn, Marina Scornavacche, Jonathan Biteau, K. H. Kampert, J. C. Arteaga Velázquez, Ioana Codrina Maris, Octavian Sima, J. de Oliveira, R. Conceição, Alejandro Almela, Jacco Vink, H.O. Klages, Alan Coleman, Peter Hansen, F. Guarino, John Matthews, Peter Buchholz, J. F. Valdés Galicia, L. Valore, D. Nitz, W. M. Namasaka, A. C. Rovero, S. J. Saffi, Isabel Goos, D. Heck, Jeffrey A. Johnsen, Miroslav Hrabovský, A. Haungs, Julien Manshanden, V. V. Kizakke Covilakam, Andres Travaini, A. Segreto, Günter Sigl, D. Nosek, E. Santos, A. A. Nucita, I. De Mitri, R. Sato, M. del Río, P. Stassi, Hernan Wahlberg, Radomir Smida, Mario Buscemi, John Farmer, F. Fenu, A. Machado Payeras, Violet M. Harvey, D. Harari, Marcel Köpke, M. Platino, G. C. Hill, P. Mantsch, D. Lo Presti, S. J. De Jong, Alexandru Balaceanu, Z. Szadkowski, E. Varela, J.D. Sanabria Gomez, Roberto Mussa, Marco Aglietta, Julian Kemp, Paul Sommers, Srijan Sehgal, Jorge F. Soriano, Thomas Hebbeker, Fernando Gollan, Max Büsken, Sergio Dasso, Tristan Sudholz, Martín Miguel Freire, M. A. Leigui de Oliveira, F. Pedreira, V. de Souza, Carla Aramo, Vincenzo Rizi, J. Perez Armand, Maria-Teresa Dova, M. R. Hampel, Pierre Billoir, A. Puyleart, Corinne Berat, Julien Souchard, Thomas Fitoussi, D. Martello, Alena Bakalova, Jarryd A. Day, A. Saftoiu, Ralph Engel, J. Ridky, A. Parra, M. Zavrtanik, L. R. Wiencke, Niklas Langner, Alex Kääpä, Marcio Aparecido Muller, Martina Bohacova, Giovanni Mancarella, O. Martínez Bravo, K. Mulrey, F. Sánchez, Miroslav Pech, V. Pirronello, Raul Sarmento, Felix Schlüter, Fabian Gobbi, Sullivan Marafico, Juan Pablo Gongora, Alina Mihaela Badescu, A. Weindl, Cristina Galea, François Montanet, M. Pothast, A.C. Cobos Cerutti, F. de Palma, E. De Vito, Darko Veberič, M. Suárez-Durán, Pavel Horvath, Claudio Galelli, M. Prouza, P. Ruehl, Marco Giammarchi, Clara Keiko Oliveira Watanabe, Flavia Gesualdi, J. R. T. de Mello Neto, Carla Taricco, Carla Bleve, Rodrigo Guedes Lang, R. M. de Almeida, T. Huege, Jeffrey Brack, Matias Tueros, G. Golup, Humberto Ibarguen Salazar, Eleonora Guido, Giovanni Consolati, Frank G. Schröder, N. Kunka, Maria Rita Coluccia, Maximilian Reininghaus, P. Tobiska, B. Andrada, K.-H. Becker, M. Pimenta, Silvia Mollerach, T. Bister, G. Marsella, H. Schieler, Jesús Peña-Rodríguez, P.G. Brichetto Orchera, David Wittkowski, G. Salina, Olivier Deligny, D. Correia dos Santos, Rodrigo Pelayo, Antonella Castellina, Stijn Buitink, V. Novotny, Luis A. Nunez, J. Stasielak, Jannis Pawlowsky, Rossella Caruso, Fernando Catalani, D. D. dos Santos, Sofia Andringa, R.C. dos Anjos, N. Fazzini, David Schmidt, Adriana Vásquez-Ramírez, Jonas Glombitza, F. C. T. Barbato, I. Allekotte, M. J. Roncoroni, Caterina Trimarelli, P.R. Araújo Ferreira, S. Schröder, Italo Epicoco, A. L. Müller, Tomáš Fodran, Alina Nasr-Esfahani, Thomas Bretz, Miguel Mostafa, Daniela Mockler, Petr Schovanek, L. Lopes, A. Di Matteo, R. Squartini, Florian Lukas Briechle, Petr Janecek, Corbin Covault, T. Suomijärvi, J. Pallotta, Juan Manuel González, G. De Mauro, M. Palatka, Gaia Silli, A. Tapia, A. Filipčič, Jörg R. Hörandel, L. Lu, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, J. Chudoba, M. Schimp, G. Cataldi, Ugo Giaccari, B. Wundheiler, Martin Vacula, Christian Sarmiento-Cano, W. Rodrigues de Carvalho, Virginia Binet, Luis A. Anchordoqui, Massimo Mastrodicasa, F. Sarazin, Lino Miramonti, B. C. Manning, H. Gemmeke, Jon Paul Lundquist, Markus Roth, A. M. Botti, M. Unger, S. Petrera, H. J. Mathes, Marc Weber, Stanislav Michal, Dusan Mandat, V. Scherini, Philipp Papenbreer, Jose Chinellato, Heino Falcke, D. de Oliveira Franco, Samo Stanič, A. Menshikov, Denis Stanca, Lukáš Vaclavek, R.J. Barreira Luz, Petr Travnicek, A. Fuster, I. Lhenry-Yvon, Denise Boncioli, L. Nellen, B. García, Bjarni Pont, B. Keilhauer, C. M. Schäfer, J. Kleinfeller, Ioana Caracas, J. Rodriguez Rojo, J. Vicha, Trent D. Grubb, A. Letessier-Selvon, Serguei Vorobiov, R. López, Karen S. Caballero-Mora, Lorenzo Cazon, C. Pérez Bertolli, N. González, P. Savina, G. Medina-Tanco, Nataliia Borodai, Marcus Niechciol, Fridtjof Feldbusch, Enrique Zas, André Schulz, Juan Manuel Figueira, Roberta Colalillo, S. J. Sciutto, C. J.W.P. Timmermans, C. Morello, L. M. Domingues Mendes, Carlos Escobar, A. G. Mariazzi, Kevin-Druis Merenda, Kai Daumiller, Ralf Ulrich, Martin Erdmann, Fernando Contreras, Juan Miguel Carceller, Xavier Bertou, G. Farrar, Nikolaos Karastathis, Antonio Condorelli, Peter L. Biermann, S. Querchfeld, Olena Tkachenko, Marcos Cerda, Pedro Assis, H. Martinez, J. de Jesús, A. Streich, Gioacchino Alex Anastasi, C. J. Todero Peixoto, A. Insolia, A. Etchegoyen, M. Kleifges, D. Zavrtanik, A.D. Supanitsky, J. Pȩkala, A.L. Garcia Vegas, M. Wirtz, Roger W Clay, Paolo Privitera, Carlo Ventura, F. Salamida, A. Yushkov, Ladislav Chytka, L. Nožka, Lorenzo Caccianiga, P.F. Gómez Vitale, Hernán Asorey, H. Wilczyński, E. M. Santos, Valerio Verzi, Kathrin Bismark, O. Scholten, R. Alves Batista, Bruce R. Dawson, P.O. Mazur, B. L. Lago, E.E. Pereira Martins, Paula Gina Isar, High Energy Astrophys. & Astropart. Phys (API, FNWI), Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez-Muniz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Araujo Ferreira, P. R., Arteaga Velazquez, J. C., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Billoir, P., Binet, V., Bismark, K., Bister, T., Biteau, J., Blazek, J., Bleve, C., Bohacova, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Brichetto Orchera, P. G., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Busken, M., Caballero-Mora, K. S., Caccianiga, L., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceicao, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Correia dos Santos, D., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jesus, J., de Jong, S. J., De Mauro, G., de Mello Neto, J. R. T., De Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Palma, F., de Souza, V., De Vito, E., del Rio, M., Deligny, O., Di Matteo, A., Dobrigkeit, C., D'Olivo, J. C., Domingues Mendes, L. M., dos Anjos, R. C., dos Santos, D., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipcic, A., Fitoussi, T., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., Garcia, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Gomez Berisso, M., Gomez Vitale, P. F., Gongora, J. P., Gonzalez, J. M., Gonzalez, N., Goos, I., Gora, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Hamal, P., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Horandel, J. R., Horvath, P., Hrabovsky, M., Huege, T., Insolia, A., Isar, P. G., Janecek, P., Johnsen, J. A., Jurysek, J., Kaapa, A., Kampert, K. H., Karastathis, N., Keilhauer, B., Kemp, J., Khakurdikar, A., Kizakke Covilakam, V. V., Klages, H. O., Kleifges, M., Kleinfeller, J., Kopke, M., Kunka, N., Lago, B. L., Lang, R. G., Langner, N., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., Lopez, R., Lu, L., Luce, Q., Lundquist, J. P., Machado Payeras, A., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Maris, I. C., Marsella, G., Martello, D., Martinelli, S., Martinez, H., Martinez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Mostafa, M., Muller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nasr-Esfahani, A., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nozka, L., Nucita, A., Nunez, L. A., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Pawlowsky, J., Pech, M., Pedreira, F., Pekala, J., Pelayo, R., Pena-Rodriguez, J., Pereira Martins, E. E., Perez Armand, J., Perez Bertolli, C., Perlin, M., Perrone, L., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., Sanchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schafer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schluter, F., Schmidt, D., Scholten, O., Schovanek, P., Schroder, F. G., Schroder, S., Schulte, J., Schulz, A., Sciutto, S. J., Scornavacche, M., Segreto, A., Sehgal, S., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Smida, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanic, S., Stasielak, J., Stassi, P., Streich, A., Suarez-Duran, M., Sudholz, T., Suomijarvi, T., Supanitsky, A. D., Szadkowski, Z., Tapia, A., Taricco, C., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tome, B., Torres, Z., Travaini, A., Travnicek, P., Trimarelli, C., Tueros, M., Ulrich, R., Unger, M., Vaclavek, L., Vacula, M., Valdes Galicia, J. F., Valore, L., Varela, E., Vasquez-Ramirez, A., Veberic, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Vink, J., Vorobiov, S., Wahlberg, H., Watanabe, C., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczynski, H., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Physics, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Pierre Auger, Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Alvarez-Muniz J., Alves Batista R., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Araujo Ferreira P.R., Arteaga Velazquez J.C., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Barreira Luz R.J., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Billoir P., Binet V., Bismark K., Bister T., Biteau J., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Bonneau Arbeletche L., Borodai N., Botti A.M., Brack J., Bretz T., Brichetto Orchera P.G., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Busken M., Caballero-Mora K.S., Caccianiga L., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Chudoba J., Chytka L., Clay R.W., Cobos Cerutti A.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., Correia dos Santos D., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., de Almeida R.M., de Jesus J., de Jong S.J., De Mauro G., de Mello Neto J.R.T., De Mitri I., de Oliveira J., de Oliveira Franco D., de Palma F., de Souza V., De Vito E., del Rio M., Deligny O., Di Matteo A., Dobrigkeit C., D'Olivo J.C., Domingues Mendes L.M., dos Anjos R.C., dos Santos D., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fitoussi T., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Garcia Vegas A.L., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Glombitza J., Gobbi F., Gollan F., Golup G., Gomez Berisso M., Gomez Vitale P.F., Gongora J.P., Gonzalez J.M., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Hamal P., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Insolia A., Isar P.G., Janecek P., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Karastathis N., Keilhauer B., Kemp J., Khakurdikar A., Kizakke Covilakam V.V., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Kunka N., Lago B.L., Lang R.G., Langner N., Leigui de Oliveira M.A., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Lo Presti D., Lopes L., Lopez R., Lu L., Luce Q., Lundquist J.P., Machado Payeras A., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinelli S., Martinez H., Martinez Bravo O., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mockler D., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nasr-Esfahani A., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Nozka L., Nucita A., Nunez L.A., Palatka M., Pallotta J., Papenbreer P., Parente G., Parra A., Pawlowsky J., Pech M., Pedreira F., Pekala J., Pelayo R., Pena-Rodriguez J., Pereira Martins E.E., Perez Armand J., Perez Bertolli C., Perlin M., Perrone L., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Rizi V., Rodrigues de Carvalho W., Rodriguez Rojo J., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Sanabria Gomez J.D., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C.M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schulte J., Schulz A., Sciutto S.J., Scornavacche M., Segreto A., Sehgal S., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Szadkowski Z., Tapia A., Taricco C., Timmermans C., Tkachenko O., Tobiska P., Todero Peixoto C.J., Tome B., Torres Z., Travaini A., Travnicek P., Trimarelli C., Tueros M., Ulrich R., Unger M., Vaclavek L., Vacula M., Valdes Galicia J.F., Valore L., Varela E., Vasquez-Ramirez A., Veberic D., Ventura C., Vergara Quispe I.D., Verzi V., Vicha J., Vink J., Vorobiov S., Wahlberg H., Watanabe C., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., and Zehrer L.
Subjects: Physics and Astronomy (miscellaneous), Astronomy, Astrophysics::High Energy Astrophysical Phenomena, UHE [cosmic radiation], FOS: Physical sciences, Flux, Cosmic ray, Astrophysics, 7. Clean energy, 01 natural sciences, detector: fluorescence, Auger, cosmic rays, surface [detector], Observatory, 0103 physical sciences, calorimeter, ddc:530, High Energy Physics, cosmic radiation: UHE, spectrum [cosmic radiation], 010303 astronomy & astrophysics, Engineering (miscellaneous), Engineering & allied operations, High Energy Astrophysical Phenomena (astro-ph.HE), fluorescence [detector], Pierre Auger Observatory, Physics, astro-ph.HE, cosmic radiation: energy spectrum, cosmic radiation: spectrum, detector: surface, 010308 nuclear & particles physics, Settore FIS/01 - Fisica Sperimentale, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Calorimeter, flux, observatory, spectral, ddc:620, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - High Energy Astrophysical Phenomena, energy spectrum [cosmic radiation], Energy (signal processing), RAIOS CÓSMICOS, ultra-high energy cosmic rays, energy spectrum features
Abstract: The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargüe. We are very grateful to the following agencies and organizations for financial support: Argentina – Comisión Nacional de Energía Atómica; Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargüe; NDM Holdings and Valle Las Leñas; in gratitude for their continuing cooperation over land access; Australia – the Australian Research Council; Belgium – Fonds de la Recherche Scientifique (FNRS); Research Foundation Flanders (FWO); Brazil – Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Financiadora de Estudos e Projetos (FINEP); Fundação de Amparo à Pesquisa do Estado de Rio de Janeiro (FAPERJ); São Paulo Research Foundation (FAPESP) Grants No. 2019/10151-2, No. 2010/07359-6 and No. 1999/05404-3; Ministério da Ciência, Tecnologia, Inovações e Comunicações (MCTIC); Czech Republic – Grant No. MSMT CR LTT18004, LM2015038, LM2018102, CZ.02.1.01/0.0/0.0/16_013/0001402, CZ.02.1.01/0.0/0.0/18_046/0016010 and CZ.02.1.01/0.0/0.0/17_049/0008422; France – Centre de Calcul IN2P3/CNRS; Centre National de la Recherche Scientifique (CNRS); Conseil Régional Ile-de-France; Département Physique Nucléaire et Corpusculaire (PNC-IN2P3/CNRS); Département Sciences de l’Univers (SDU-INSU/CNRS); Institut Lagrange de Paris (ILP) Grant No. LABEX ANR-10-LABX-63 within the Investissements d’Avenir Programme Grant No. ANR-11-IDEX-0004-02; Germany – Bundesministerium für Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Finanzministerium Baden-Württemberg; Helmholtz Alliance for Astroparticle Physics (HAP); Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF); Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen; Ministerium für Wissenschaft, Forschung und Kunst des Landes Baden-Württemberg; Italy – Istituto Nazionale di Fisica Nucleare (INFN); Istituto Nazionale di Astrofisica (INAF); Ministero dell’Istruzione, dell’Universitá e della Ricerca (MIUR); CETEMPS Center of Excellence; Ministero degli Affari Esteri (MAE); México – Consejo Nacional de Ciencia y Tecnología (CONACYT) No. 167733; Universidad Nacional Autónoma de México (UNAM); PAPIIT DGAPA-UNAM; The Netherlands – Ministry of Education, Culture and Science; Netherlands Organisation for Scientific Research (NWO); Dutch national e-infrastructure with the support of SURF Cooperative; Poland -Ministry of Science and Higher Education, grant No. DIR/WK/2018/11; National Science Centre, Grants No. 2013/08/M/ST9/00322, No. 2016/23/B/ST9/01635 and No. HARMONIA 5–2013/10/M/ST9/00062, UMO-2016/22/M/ST9/00198; Portugal – Portuguese national funds and FEDER funds within Programa Operacional Factores de Competitividade through Fundação para a Ciência e a Tecnologia (COMPETE); Romania – Romanian Ministry of Education and Research, the Program Nucleu within MCI (PN19150201/16N/2019 and PN19060102) and project PN-III-P1-1.2-PCCDI-2017-0839/19PCCDI/2018 within PNCDI III; Slovenia – Slovenian Research Agency, grants P1-0031, P1-0385, I0-0033, N1-0111; Spain – Ministerio de Economía, Industria y Competitividad (FPA2017-85114-P and PID2019-104676GB-C32), Xunta de Galicia (ED431C 2017/07), Junta de Andalucía (SOMM17/6104/UGR, P18-FR-4314) Feder Funds, RENATA Red Nacional Temática de Astropartículas (FPA2015-68783-REDT) and María de Maeztu Unit of Excellence (MDM-2016-0692); USA – Department of Energy, Contracts No. DE-AC02-07CH11359, No. DE-FR02-04ER41300, No. DE-FG02-99ER41107 and No. DE-SC0011689; National Science Foundation, Grant No. 0450696; The Grainger Foundation; Marie Curie-IRSES/EPLANET; European Particle Physics Latin American Network; University of Delaware Research Foundation (UDRF) – 2019; and UNESCO., We present a measurement of the cosmic-ray spectrum above 100 PeV using the part of the surface detector of the Pierre Auger Observatory that has a spacing of 750 m. An inflection of the spectrum is observed, confirming the presence of the so-called second-knee feature. The spectrum is then combined with that of the 1500 m array to produce a single measurement of the flux, linking this spectral feature with the three additional breaks at the highest energies. The combined spectrum, with an energy scale set calorimetrically via fluorescence telescopes and using a single detector type, results in the most statistically and systematically precise measurement of spectral breaks yet obtained. These measurements are critical for furthering our understanding of the highest energy cosmic rays., ANR-10-LABX-63 ANR-11-IDEX-0004-02, Belgium – Fonds de la Recherche Scientifique, Comisión Nacional de Energía Atómica, Département Physique Nucléaire et Corpusculaire PNC-IN2P3/CNRS, Département Sciences de l’Univers, Feder Funds, María de Maeztu Unit of Excellence MDM-2016-0692, Ministero degli Affari Esteri, RENATA Red Nacional Temática de Astropartículas FPA2015-68783-REDT, SURF, National Science Foundation 0450696, U.S. Department of Energy DE-AC02-07CH11359, DE-FG02-99ER41107, DE-FR02-04ER41300, DE-SC0011689, University of Delaware Research Foundation, United Nations Educational, Scientific and Cultural Organization, Australian Research Council, Helmholtz-Gemeinschaft, Deutsche Forschungsgemeinschaft, Fundação de Amparo à Pesquisa do Estado de São Paulo 1999/05404-3, 2010/07359-6, 2019/10151-2, Fundação para a Ciência e a Tecnologia, Bundesministerium für Bildung und Forschung, Fonds De La Recherche Scientifique - FNRS, Consejo Nacional de Investigaciones Científicas y Técnicas, Agencia Nacional de Promoción Científica y Tecnológica, Fonds Wetenschappelijk Onderzoek, Consejo Nacional de Ciencia y Tecnología 167733, Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Ministero dell’Istruzione, dell’Università e della Ricerca, Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Conseil Régional, Île-de-France, Instituto Nazionale di Fisica Nucleare, Narodowe Centrum Nauki 2013/08/M/ST9/00322, 2013/10/M/ST9/00062, 2016/23/B/ST9/01635, UMO-2016/22/M/ST9/00198, Javna Agencija za Raziskovalno Dejavnost RS I0-0033, N1-0111, P1-0031, P1-0385, Ministerstwo Edukacji i Nauki DIR/WK/2018/11, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Centre National de la Recherche Scientifique, Financiadora de Estudos e Projetos, Istituto Nazionale di Astrofisica, Universidad Nacional Autónoma de México, Ministry of Education and Research, Romania PN-III-P1-1.2-PCCDI-2017-0839/19PCCDI/2018, PN19060102, PN19150201/16N/2019, European Regional Development Fund, Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, Ministerio de Economía, Industria y Competitividad, Gobierno de España FPA2017-85114-P, PID2019-104676GB-C32, Xunta de Galicia ED431C 2017/07, Junta de Andalucía P18-FR-4314, Ministério da Ciência, Tecnologia, Inovações e Comunicações CZ.02.1.01/0.0/0.0/16_013/0001402, CZ.02.1.01/0.0/0.0/17_049/0008422, CZ.02.1.01/0.0/0.0/18_046/0016010, LM2015038, LM2018102, MSMT CR LTT18004, Programa Operacional Temático Factores de Competitividade, Institut Lagrange de Paris
Published: 2021
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28. Reconstructing air shower parameters with LOFAR using event specific GDAS atmosphere

Author: Brian Hare, Anna Nelles, Stijn Buitink, Katie Mulrey, Heino Falcke, S. ter Veen, T. N. G. Trinh, Laura Rossetto, H. Pandya, Jörg P. Rachen, G. K. Krampah, Antonio Bonardi, Tim Huege, Jörg R. Hörandel, Pragati Mitra, Arthur Corstanje, Olaf Scholten, Tobias Winchen, Faculty of Sciences and Bioengineering Sciences, Physics, Elementary Particle Physics, Astronomy, and Research unit Astroparticle Physics
Subjects: Meteorology, Effects of humidity, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, FOS: Physical sciences, Cosmic ray, Atmospheric model, 01 natural sciences, Cosmic Ray, Atmosphere, Data assimilation, 0103 physical sciences, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Physics::Atmospheric and Oceanic Physics, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Atmospheric models, Radio detection technique, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Index of refraction, X-max reconstruction, Astronomy and Astrophysics, LOFAR, EAS, GDAS, COSMIC-RAYS, Air shower, 13. Climate action, RADIO-EMISSION, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract: The limited knowledge of atmospheric parameters like humidity, pressure, temperature, and the index of refraction has been one of the important systematic uncertainties in reconstructing the depth of the shower maximum from the radio emission of air showers. Current air shower Monte Carlo simulation codes like CORSIKA and the radio plug-in CoREAS use various averaged parameterized atmospheres. However, time-dependent and location-specific atmospheric models are needed for the cosmic ray analysis method used for LOFAR data. There, dedicated simulation sets are used for each detected cosmic ray, to take into account the actual atmospheric conditions at the time of the measurement. Using the Global Data Assimilation System (GDAS), a global atmospheric model, we have implemented time-dependent, realistic atmospheric profiles in CORSIKA and CoREAS. We have produced realistic event-specific atmospheres for all air showers measured with LOFAR, an event set spanning several years and many different weather conditions. A complete re-analysis of our data set shows that for the majority of data, our previous correction factor performed rather well; we found only a small systematic shift of 2 g/cm$^2$ in the reconstructed $X_{\rm max}$. However, under extreme weather conditions, for example, very low air pressure, the shift can be up to 15 g/cm$^2$. We provide a correction formula to determine the shift in $X_{\rm max}$ resulting from a comparison of simulations done using the US-Std atmosphere and the GDAS-based atmosphere., Comment: Accepted for publication in Astroparticle Physics. arXiv admin note: text overlap with arXiv:1911.02859
Published: 2020

29. Measurement of the cosmic-ray energy spectrum above 2.5×1018 eV using the Pierre Auger Observatory

Author: Jaroslaw Stasielak, Ana Martina Botti, Marcus Niechciol, Alberto Daniel Supanitsky, Alexey Yushkov, Petr Schovánek, Pavel Horváth, Pedro Assis, Nataliia Borodai, Luis Lopes, Luis Nunez, Carla Bleve, Alberto Blanco, Katharine Mulrey, Antonella Castellina, Francesca Zuccarello, Felicia Carla Tiziana Barbato, Emanuele De Vito, Jose Alfredo Bellido Caceres, Fausto Guarino, Jeffrey Brack, Kai Daumiller, Dariusz Gora, Christian Sarmiento-Cano, Alessio Gorgi, Peter Biermann, Teresa Bister, LORENZO CACCIANIGA, Beatriz Garcia, Bruce Dawson, Alena Bakalova, MASSIMO MASTRODICASA, Edivaldo Moura Santos, Stijn Buitink, Bernardo Tomé, Ana Laura Müller, Mario BUSCEMI, Francesco Salamida, Johannes Hulsman, Henryk Wilczyński, Michael Unger, Ronald Cintra Shellard, Miguel Mostafa, Achille Nucita, Frederic Sarazin, Paul Mantsch, Ruben Conceição, Roger Clay, Lukáš Václavek, Giovanni Marsella, Markus Roth, Jakub Jurysek, Lorenzo Cazon, Eva Dos Santos, Corbin Covault, Francesco Fenu, Dalibor Nosek, Rossella Caruso, Alexandra Saftoiu, Tim Huege, Antonio CONDORELLI, Orazio Zapparrata, Jaime Alvarez-Muniz, Denise Boncioli, Guillermo Torralba Elipe, Martin Erdmann, Bruno Lazarotto Lago, Carlos José Todero Peixoto, Geraldina Golup, Jan Pękala, Maximilian Stadelmaier, Raul Sarmento, Enrique Varela, Antoine Letessier selvon, Vincenzo Rizi, Eleonora Guido, Pedro T. Abreu, Rafael Alves Batista, Arjen Van Vliet, and Jan Ebr
Subjects: Pierre Auger Observatory, Physics, Spectral index, 010308 nuclear & particles physics, Hadron, Flux, Cosmic ray, Astrophysics, 01 natural sciences, Flattening, 0103 physical sciences, 010306 general physics, Anisotropy, Zenith
Abstract: We report a measurement of the energy spectrum of cosmic rays for energies above 2.5×1018 eV based on 215,030 events recorded with zenith angles below 60°. A key feature of the work is that the estimates of the energies are independent of assumptions about the unknown hadronic physics or of the primary mass composition. The measurement is the most precise made hitherto with the accumulated exposure being so large that the measurements of the flux are dominated by systematic uncertainties except at energies above 5×1019 eV. The principal conclusions are(1) The flattening of the spectrum near 5×1018 eV, the so-called "ankle,"is confirmed.(2) The steepening of the spectrum at around 5×1019 eV is confirmed.(3) A new feature has been identified in the spectrum: in the region above the ankle the spectral index γ of the particle flux (∝E-γ) changes from 2.51±0.03 (stat)±0.05 (syst) to 3.05±0.05 (stat)±0.10 (syst) before changing sharply to 5.1±0.3 (stat)±0.1 (syst) above 5×1019 eV.(4) No evidence for any dependence of the spectrum on declination has been found other than a mild excess from the Southern Hemisphere that is consistent with the anisotropy observed above 8×1018 eV.
Published: 2020
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30. Features of the Energy Spectrum of Cosmic Rays above 2.5×1018 eV Using the Pierre Auger Observatory

Author: Jaroslaw Stasielak, Ana Martina Botti, Marcus Niechciol, Alberto Daniel Supanitsky, Alexey Yushkov, Petr Schovánek, Toshihiro Fujii, Pavel Horváth, Pedro Assis, Nataliia Borodai, Luis Lopes, Luis Nunez, Carla Bleve, Alberto Blanco, Katharine Mulrey, Antonella Castellina, Francesca Zuccarello, Felicia Carla Tiziana Barbato, Emanuele De Vito, Jose Alfredo Bellido Caceres, Fausto Guarino, Jeffrey Brack, Kai Daumiller, Dariusz Gora, Christian Sarmiento-Cano, Carola Dobrigkeit Chinellato, Alessio Gorgi, Peter Biermann, Teresa Bister, LORENZO CACCIANIGA, Beatriz Garcia, Bruce Dawson, Alena Bakalova, MASSIMO MASTRODICASA, Edivaldo Moura Santos, Stijn Buitink, Bernardo Tomé, Ana Laura Müller, Mario BUSCEMI, Francesco Salamida, Johannes Hulsman, Henryk Wilczyński, Michael Unger, Ronald Cintra Shellard, Miguel Mostafa, Achille Nucita, Frederic Sarazin, Paul Mantsch, Ruben Conceição, Roger Clay, Lukáš Václavek, Giovanni Marsella, Markus Roth, Jakub Jurysek, Lorenzo Cazon, Eva Dos Santos, Corbin Covault, Francesco Fenu, Dalibor Nosek, Rossella Caruso, Alexandra Saftoiu, Tim Huege, Antonio CONDORELLI, Orazio Zapparrata, Jaime Alvarez-Muniz, Denise Boncioli, Guillermo Torralba Elipe, Martin Erdmann, Bruno Lazarotto Lago, Carlos José Todero Peixoto, Geraldina Golup, Jan Pękala, Maximilian Stadelmaier, Raul Sarmento, Enrique Varela, Antoine Letessier selvon, Vincenzo Rizi, Eleonora Guido, Pedro T. Abreu, Rafael Alves Batista, Arjen Van Vliet, and Jan Ebr
Subjects: 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, 01 natural sciences
Published: 2020
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31. Radio Emission Reveals Inner Meter-Scale Structure of Negative Lightning Leader Steps

Author: Heino Falcke, G. K. Krampah, B. Neijzen, H. Pandya, Joseph R. Dwyer, Jörg P. Rachen, Arthur Corstanje, Brian Hare, Ute Ebert, Antonio Bonardi, Tim Huege, Jörg R. Hörandel, Tobias Winchen, S Sander Nijdam, Olaf Scholten, Stijn Buitink, Katie Mulrey, S. ter Veen, Laura Rossetto, T. N. G. Trinh, Pragati Mitra, A. Nelles, Elementary Processes in Gas Discharges, Astronomy, Research unit Astroparticle Physics, and Centrum Wiskunde & Informatica, Amsterdam (CWI), The Netherlands
Subjects: Physics, Astronomy, STREAMERS, General Physics and Astronomy, Plasma, Astrophysics, LOFAR, Low frequency, Radiation, 01 natural sciences, Lightning, Corona, 13. Climate action, INCEPTION, 0103 physical sciences, Thunderstorm, Metre, ddc:530, 010306 general physics
Abstract: We use the Low Frequency Array (LOFAR) to probe the dynamics of the stepping process of negatively charged plasma channels (negative leaders) in a lightning discharge. We observe that at each step of a leader, multiple pulses of vhf (30-80 MHz) radiation are emitted in short-duration bursts (
Published: 2020
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32. Properties of the Lunar Detection Mode for ZeV-Scale Particles with LOFAR

Author: Anna Nelles, Arthur Corstanje, Olaf Scholten, Heino Falcke, Tobias Winchen, A. Hörandel, Pragati Mitra, T. N. G. Trinh, Brian Hare, Antonio Bonardi, Satyendra Thoudam, Jörg P. Rachen, S. ter Veen, Laura Rossetto, Stijn Buitink, Katie Mulrey, Pim Schellart, Astronomy and Astrophysics Research Group, Physics, and Faculty of Sciences and Bioengineering Sciences
Subjects: Physics, 010308 nuclear & particles physics, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Detector, Mode (statistics), Astrophysics::Instrumentation and Methods for Astrophysics, Flux, Cosmic ray, LOFAR, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Physics::Geophysics, Radio telescope, Particle shower, 0103 physical sciences, Astrophysics::Earth and Planetary Astrophysics, 010303 astronomy & astrophysics, Energy (signal processing)
Abstract: The steep decrease of the flux of ultra-high energy cosmic rays (UHECR) provides a challenge to answer the long standing question about their origin and nature. A significant increase in detector volume may be achieved byemploying Earth’s moon as a detector that is read out using existing Earth-bound radio telescopes by searching for the radio pulses emitted by the particle shower in the lunar rock. In this contribution we will report on the properties of a corresponding detection mode currently under development for the LOFAR Radio telescope.
Published: 2019
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33. Precision Lightning Imaging with LOFAR

Author: Tim Huege, Alex Pel, Heino Falcke, J. R. Hoerandel, Gia Trinh, Tobias Winchen, H. Pandya, Brian Hare, Pragati Mitra, G. K. Krampah, ter Sander Veen, Olaf Scholten, Antonio Bonardi, Arthur Corstanje, Anna Nelles, Laura Rossetto, Stijn Buitink, Katie Mulrey, and J. P. Rachen
Subjects: Astronomy, LOFAR, Lightning, Geology, Remote sensing
Abstract: We report on the improvements of our lightning imaging technique over what was reported in Hare2019, where we map lightning in 3D using timing obtained from the cross-correlation of the signals from antenna pairs in broadband VHF (30 — 80 MHZ). We use the infrastructure offered by LOFAR (LOw Frequency Array), a software radio telescope.The infrastructure of LOFAR allows us to use a large number of simple dual-polarized dipole antennas arranged in stations of 48 antennas with a diameter of about 60m. We limit ourselves to the use of the Dutch stations only, which gives us baselines of up to 100 km. The data are sampled at 200 MHz giving 5 nanoseconds time between samples. We use LOFAR in the mode where it saves the full time-series spectra for five seconds for every antenna in the array. Upon a trigger, the data for all Dutch stations is stored for later off-line processing.In imaging a flash our bottleneck is to handle the confusion limit. Because of the high density of sources, pulses that are detected in one time-order in the first antenna may have changed order in a second that is at an appreciable distance from the first. The pulse density where this problem surfaces depends on the imaging technique. In our new imaging method we use an approach inspired by the Kalman-filter technique. In the presentation the new technique will be explained. This allows us to obtain a larger number of located sources as compared to the approach used in Hare2019 (sometimes as much as three times as many) which allows for a more detailed analysis of small structures seen in lightning.To show the strength of the new technique we show some images of positive and negative leader development as well as a return stroke. Hare2019: B. Hare et al., Nature 568, 360–363 (2019).
Published: 2020

34. Studies on the response of a water-Cherenkov detector of the Pierre Auger Observatory to atmospheric muons using an RPC hodoscope

Author: A. Zepeda, Pedro Assis, H. Martinez, A. Etchegoyen, Dariusz Gora, Bjarni Pont, Alan Coleman, B. Tome, Peter Hansen, F. Guarino, John Matthews, Peter Buchholz, S. J. Saffi, D. Lo Presti, S. J. De Jong, B. García, R. López, Karen S. Caballero-Mora, G. Cataldi, V. Scherini, Martin Erdmann, G. Matthiae, J. de Jesús, Frank G. Schröder, Antonio Bueno, A. Streich, Gioacchino Alex Anastasi, M. Wirtz, Thomas Hebbeker, Sergio Dasso, Tristan Sudholz, P. Abreu, D. Ravignani, Roger W Clay, Marco Aglietta, Marko Zavrtanik, E. Santos, Jarryd A. Day, G. De Mauro, F. Riehn, Marina Scornavacche, Alexandra Saftoiu, Tiina Suomijarvi, F. Pedreira, Raul Sarmento, Felix Schlüter, Martin Vacula, J. Rautenberg, Q. Luce, Gualberto Avila, Martín Miguel Freire, Fabian Gobbi, Jiri Blazek, Lorenzo Caccianiga, Denis Stanca, I. Lhenry-Yvon, Miroslav Pech, M. Pothast, Markus Roth, D. Nitz, A.C. Cobos Cerutti, J. R. T. de Mello Neto, Paul Sommers, A. Blanco, Marcus Niechciol, B. Vargas Cárdenas, J. Pallotta, L. R. Wiencke, G. Marsella, F. Sánchez, Heino Falcke, Maximilian Stadelmaier, Jesús Peña-Rodríguez, Carla Bleve, Rodrigo Guedes Lang, B. Andrada, P. Horvath, Isabel Goos, D. Heck, John Farmer, Jonathan Biteau, A. Insolia, M. Kleifges, A.D. Supanitsky, J. Pȩkala, Antonio Condorelli, Christine Peters, Maria-Teresa Dova, M. R. Hampel, Valerio Verzi, J. Vicha, A. M. Botti, Niraj Dhital, P. Tobiska, Sofia Andringa, Julian Kemp, Luis Villaseñor, R. Conceição, A. Weindl, S. Querchfeld, Miroslav Hrabovský, T. Huege, M. del Río, Nicolás González, Jeffrey Brack, A.L. Garcia Vegas, M. Schimp, Marvin Gottowik, Maria Rita Coluccia, Maximilian Reininghaus, M.A. Leigui de Oliveira, Olaf Scholten, Gaia Silli, Humberto Ibarguen Salazar, D. Mockler, L. Bonneau Arbeletche, A. Di Matteo, Eric Mayotte, A. Haungs, A. Filipčič, G. Torralba Elipe, I. Valiño, Olena Tkachenko, M. I. Micheletti, B. C. Manning, P. Ruehl, Ralf Ulrich, M. Gómez Berisso, L. Valore, B. Wundheiler, L. Lopes, Roberto Mussa, J. Šupík, Carlo Ventura, F. Sarazin, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, David Schmidt, S. Schröder, Italo Epicoco, S. Petrera, Marc Weber, Charles Timmermans, Hernán Asorey, R.C. dos Anjos, R.C. Shellard, Adriana Vásquez-Ramírez, J. F. Valdés Galicia, M. Palatka, Mario Buscemi, Jörg R. Hörandel, P. Mantsch, J. Hulsman, Julien Manshanden, Dusan Mandat, Lukáš Vaclavek, H. J. Mathes, I. De Mitri, Stanislav Michal, G. Mancarella, François Montanet, G. Golup, B. Keilhauer, Sullivan Marafico, Vladimir Lenok, L. Perrone, Francesco Fenu, Ladislav Chytka, Gaetano Salina, Hernan Wahlberg, Miguel Mostafa, Violet M. Harvey, Andres Travaini, E. Varela, J.D. Sanabria Gomez, D. Harari, L. Nožka, J. Chudoba, S. J. Sciutto, J. Rodriguez Rojo, Fridtjof Feldbusch, Marcel Köpke, M. Platino, C. M. Schäfer, Maria Giller, R. Squartini, Alfred Müller, Marco Giammarchi, Juan Miguel Carceller, P. Savina, Eleonora Guido, W. Rodrigues de Carvalho, Flavia Gesualdi, Alex Kääpä, Enrique Zas, A. Parra, Alena Bakalova, J. Stasielak, Massimo Mastrodicasa, R. M. de Almeida, Teresa Bister, E. De Vito, R.J. Barreira Luz, Alina Mihaela Badescu, Dalibor Nosek, Fernando Contreras, Brian Fick, Samo Stanič, Giovanni Consolati, Cristina Galea, P. Ristori, M. Trini, K. Choi, Martina Bohacova, G. Medina-Tanco, A. Tapia, Octavian Sima, A. Cancio, H. Gemmeke, R. Halliday, Nataliia Borodai, M. Unger, M. L. Díaz Castro, G. Farrar, M.P. Panetta, Petr Schovanek, Juan Pablo Gongora, Christian Sarmiento-Cano, Francesca Zuccarello, Luis A. Anchordoqui, I. Allekotte, M. J. Roncoroni, Valerio Pirronello, H. Schieler, Q. Dorosti, Philipp Papenbreer, C. J. Todero Peixoto, Karl-Heinz Kampert, L. Calcagni, Kai Daumiller, Antonella Castellina, A. C. Fauth, F. Salamida, A. Yushkov, A. Fuster, A. Puyleart, L. Nellen, Zbigniew Szadkowski, Michael Prouza, Corinne Berat, Carla Bonifazi, Rodrigo Pelayo, Denise Boncioli, D. Melo, Stijn Buitink, M. Risse, V. Novotny, Trent D. Grubb, A. Taboada, Jose A. Bellido, C. Morello, Rossella Caruso, Fabio Convenga, A. Lucero, Fernando Catalani, Caterina Trimarelli, M. A. Muller, Juan Manuel Figueira, H. Wilczyński, Roberta Colalillo, P.F. Gómez Vitale, I.D. Vergara Quispe, A. G. Mariazzi, A. Aab, R. Sato, Peter L. Biermann, G. P. Guedes, Toshihiro Fujii, Paolo Privitera, Jakub Juryšek, G. Kukec Mezek, Alessio Gorgi, M. E. Bertaina, A. Menshikov, P. Travnicek, J. Debatin, Orazio Zapparrata, Carola Dobrigkeit, M. Muzio, Steffen Hahn, Juan Carlos D'Olivo, T. Pierog, Esteban Roulet, Justin M. Albury, Alan Watson, M. Perlin, Mihai Niculescu-Oglinzanu, J. Alvarez Castillo, Matias Tueros, Luis A. Nunez, Piera Luisa Ghia, Jeffrey A. Johnsen, B. L. Lago, Günter Sigl, P. Stassi, Radomir Smida, A. Machado Payeras, Paula Gina Isar, Fernando Gollan, E. M. Santos, R. Alves Batista, Bruce R. Dawson, P.O. Mazur, V. de Souza, K.-H. Becker, M. Pimenta, P.R. Araújo Ferreira, Tobias Winchen, Florian Lukas Briechle, Max Malacari, J. Perez Armand, Claudio Galelli, Jose Chinellato, Ioana Caracas, A. Letessier-Selvon, Lorenzo Cazon, A. van Vliet, David Wittkowski, Danielle LaHurd, Olivier Deligny, Tomáš Fodran, R. Lorek, M. Urban, W. M. Namasaka, A. C. Rovero, Ugo Giaccari, Alexandru Balaceanu, M. Suárez-Durán, Carla Aramo, Julien Souchard, D. Martello, M. Ziolkowski, O. Martínez Bravo, K. Mulrey, Silvia Mollerach, N. Fazzini, Ioana Codrina Maris, Jonas Glombitza, F. C. T. Barbato, D. Zavrtanik, Serguei Vorobiov, G. C. Hill, Jorge F. Soriano, Ralph Engel, Marcos Cerda, J. Ridky, Darko Veberič, J. Kleinfeller, Carlos Escobar, Kevin-Druis Merenda, M. Schimassek, C. Hojvat, Jan Ebr, Jacco Vink, H.O. Klages, A. A. Nucita, G. Parente, Fabrizia Canfora, L. Zehrer, J. de Oliveira, Alejandro Almela, Thomas Bretz, V. Rizi, Corbin Covault, Lino Miramonti, D. de Oliveira Franco, Xavier Bertou, Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Castillo, J. Alvarez, Alvarez-Muñiz, J., Batista, R. Alve, Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Ferreira, P. R. Araújo, Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Luz, R. J. Barreira, Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blanco, A., Blazek, J., Bleve, C., Boháčová, M., Boncioli, D., Bonifazi, C., Arbeletche, L. Bonneau, Borodai, N., Botti, A. M., Brack, J., Bretz, T., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Calcagni, L., Cancio, A., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cerutti, A. C. Cobo, Colalillo, R., Coleman, A., Coluccia, M. R., Conceição, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jesús, J., de Jong, S. J., Mauro, G. De, Neto, J. R. T. de Mello, Mitri, I. De, de Oliveira, J., Franco, D. de Oliveira, de Souza, V., Vito, E. De, Debatin, J., Río, M. del, Deligny, O., Dhital, N., Matteo, A. Di, Castro, M. L. Díaz, Dobrigkeit, C., D'Olivo, J. C., Dorosti, Q., Anjos, R. C. do, Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipčič, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., García, B., Vegas, A. L. Garcia, Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Berisso, M. Gómez, Vitale, P. F. Gómez, Gongora, J. P., González, N., Goos, I., Góra, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Halliday, R., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Hörandel, J. R., Horvath, P., Hrabovský, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Johnsen, J. A., Jurysek, J., Kääpä, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Köpke, M., Mezek, G. Kukec, Lago, B. L., Lahurd, D., Lang, R. G., de Oliveira, M. A. Leigui, Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Presti, D. Lo, Lopes, L., López, R., Lorek, R., Luce, Q., Lucero, A., Payeras, A. Machado, Malacari, M., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Mariş, I. C., Marsella, G., Martello, D., Martinez, H., Bravo, O. Martínez, Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Müller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Nucita, A, Núñez, L. A., Palatka, M., Pallotta, J., Panetta, M. P., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pȩkala, J., Pelayo, R., Peña-Rodriguez, J., Armand, J. Perez, Perlin, M., Perrone, L., Peters, C., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., de Carvalho, W. Rodrigue, Rojo, J. Rodriguez, Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Gomez, J. D. Sanabria, Sánchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schäfer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schlüter, F., Schmidt, D., Scholten, O., Schovánek, P., Schröder, F. G., Schröder, S., Sciutto, S. J., Scornavacche, M., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Šmída, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanič, S., Stasielak, J., Stassi, P., Streich, A., Suárez-Durán, M., Sudholz, T., Suomijärvi, T., Supanitsky, A. D., Šupík, J., Szadkowski, Z., Taboada, A., Tapia, A., Timmermans, C., Tkachenko, O., Tobiska, P., Peixoto, C. J. Todero, Tomé, B., Elipe, G. Torralba, Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Urban, M., Vaclavek, L., Vacula, M., Galicia, J. F. Valdé, Valiño, I., Valore, L., Vliet, A. van, Varela, E., Cárdenas, B. Varga, Vásquez-Ramírez, A., Veberič, D., Ventura, C., Quispe, I. D. Vergara, Verzi, V., Vicha, J., Villaseñor, L., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczyński, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Ziolkowski, M., Zuccarello, F., Castillo, J. A., Alvarez-Muniz, J., Batista, R. A., Ferreira, P. R. A., Luz, R. J. B., Bohacova, M., Arbeletche, L. B., Cerutti, A. C. C., Conceicao, R., De Almeida, R. M., De Jesus, J., De Jong, S. J., Mauro, G. D., Neto, J. R. T. D. M., De Mitri, I., De Oliveira, J., De Oliveira Franco, D., De Souza, V., De Vito, E., Del Rio, M., Di Matteo, A., Castro, M. L. D., Dos Anjos, R. C., Filipcic, A., Garcia, B., Vegas, A. L. G., Berisso, M. G., Vitale, P. F. G., Gonzalez, N., Gora, D., Horandel, J. R., Hrabovsky, M., Kaapa, A., Kopke, M., Mezek, G. K., De Oliveira, M. A. L., Presti, D. L., Lopez, R., Payeras, A. M., Maris, I. C., Bravo, O. M., Mostafa, M., Muller, A. L., Nozka, L., Nucita, A., Nunez, L. A., Pkala, J., Pena-Rodriguez, J., Armand, J. P., De Carvalho, W. R., Rojo, J. R., Gomez, J. D. S., Sanchez, F., Schafer, C. M., Schluter, F., Schovanek, P., Schroder, F. G., Schroder, S., Smida, R., Stanic, S., Suarez-Duran, M., Suomijarvi, T., Supik, J., Peixoto, C. J. T., Tome, B., Elipe, G. T., Galicia, J. F. V., Valino, I., Vliet, A. V., Cardenas, B. V., Vasquez-Ramirez, A., Veberic, D., Quispe, I. D. V., Villasenor, L., Wilczynski, H., High Energy Astrophys. & Astropart. Phys (API, FNWI), Research unit Astroparticle Physics, Physics, Elementary Particle Physics, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Pierre Auger, Aab A., Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Castillo J.A., Alvarez-Muniz J., Batista R.A., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Ferreira P.R.A., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Luz R.J.B., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Bister T., Biteau J., Blanco A., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Arbeletche L.B., Borodai N., Botti A.M., Brack J., Bretz T., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Calcagni L., Cancio A., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Choi K., Chudoba J., Chytka L., Clay R.W., Cerutti A.C.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., De Almeida R.M., De Jesus J., De Jong S.J., Mauro G.D., Neto J.R.T.D.M., De Mitri I., De Oliveira J., De Oliveira Franco D., De Souza V., De Vito E., Debatin J., Del Rio M., Deligny O., Dhital N., Di Matteo A., Castro M.L.D., Dobrigkeit C., D'Olivo J.C., Dorosti Q., Dos Anjos R.C., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Vegas A.L.G., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glombitza J., Gobbi F., Gollan F., Golup G., Berisso M.G., Vitale P.F.G., Gongora J.P., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Halliday R., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Mezek G.K., Lago B.L., Lahurd D., Lang R.G., De Oliveira M.A.L., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Presti D.L., Lopes L., Lopez R., Lorek R., Luce Q., Lucero A., Payeras A.M., Malacari M., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Bravo O.M., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mockler D., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Nozka L., Nucita A., Nunez L.A., Palatka M., Pallotta J., Panetta M.P., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pkala J., Pelayo R., Pena-Rodriguez J., Armand J.P., Perlin M., Perrone L., Peters C., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Ristori P., Rizi V., De Carvalho W.R., Rojo J.R., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Gomez J.D.S., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C.M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Sciutto S.J., Scornavacche M., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Tapia A., Timmermans C., Tkachenko O., Tobiska P., Peixoto C.J.T., Tome B., Elipe G.T., Travaini A., Travnicek P., Trimarelli C., Trini M., Tueros M., Ulrich R., Unger M., Urban M., Vaclavek L., Vacula M., Galicia J.F.V., Valino I., Valore L., Vliet A.V., Varela E., Cardenas B.V., Vasquez-Ramirez A., Veberic D., Ventura C., Quispe I.D.V., Verzi V., Vicha J., Villasenor L., Vink J., Vorobiov S., Wahlberg H., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., Zepeda A., Ziolkowski M., and Zuccarello F.
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astronomy, 01 natural sciences, 030218 nuclear medicine & medical imaging, law.invention, 0302 clinical medicine, law, Observatory, atmosphere [muon], Instrumentation, physics.ins-det, Mathematical Physics, Large detector-systems performance, Physics, Instrumentation et méthodes en physique, Performance of high energy physics detectors, Data reduction methods, Large detector systems for particle and astroparticle physics, Detector, Settore FIS/01 - Fisica Sperimentale, Astrophysics::Instrumentation and Methods for Astrophysics, resistive plate chamber, Instrumentation and Detectors (physics.ins-det), trajectory [muon], Auger, observatory, muon: atmosphere, Astrophysics - Instrumentation and Methods for Astrophysics, atmosphere [showers], Cherenkov detector, air, Cherenkov counter: water, Astrophysics::High Energy Astrophysical Phenomena, UHE [cosmic radiation], FOS: Physical sciences, Cosmic ray, muon: trajectory, Nuclear physics, 03 medical and health sciences, Hodoscope, Data reduction method, 0103 physical sciences, Calibration, High Energy Physics, ddc:610, cosmic radiation: UHE, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), Zenith, Ciencias Exactas, Pierre Auger Observatory, showers: atmosphere, 010308 nuclear & particles physics, water [Cherenkov counter], hodoscope, Física, Autres mathématiques, stability, calibration, Data reduction methods, Large detector systems for particle and astroparticle physics, Large detector-systems performance, Performance of High Energy Physics Detectors, Experimental High Energy Physics, Large detector systems for particle and astroparticle physic, High Energy Physics::Experiment, RAIOS CÓSMICOS, astro-ph.IM
Abstract: Extensive air showers, originating from ultra-high energy cosmic rays, have been successfully measured through the use of arrays of water-Cherenkov detectors (WCDs). Sophisticated analyses exploiting WCD data have made it possible to demonstrate that shower simulations, based on different hadronic-interaction models, cannot reproduce the observed number of muons at the ground. The accurate knowledge of the WCD response to muons is paramount in establishing the exact level of this discrepancy. In this work, we report on a study of the response of a WCD of the Pierre Auger Observatory to atmospheric muons performed with a hodoscope made of resistive plate chambers (RPCs), enabling us to select and reconstruct nearly 600 thousand single muon trajectories with zenith angles ranging from 0º to 55º. Comparison of distributions of key observables between the hodoscope data and the predictions of dedicated simulations allows us to demonstrate the accuracy of the latter at a level of 2%. As the WCD calibration is based on its response to atmospheric muons, the hodoscope data are also exploited to show the long-term stability of the procedure., La lista completa de autores que integran el documento puede consultarse en el archivo., Facultad de Ciencias Exactas, Instituto de Física La Plata
Published: 2020
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35. A 3-Year Sample of Almost 1,600 Elves Recorded Above South America by the Pierre Auger Cosmic-Ray Observatory

Author: B. García, M. L. Díaz Castro, G. Farrar, R. López, Karen S. Caballero-Mora, Francesca Zuccarello, Hernan Wahlberg, Q. Luce, Jose Chinellato, P. H. Nguyen, Martin Erdmann, Octavian Sima, J. Kleinfeller, H. J. Mathes, Z. Zong, G. Matthiae, R. R. Prado, F. Diogo, E. M. Santos, M. Schauer, A. Streich, Gioacchino Alex Anastasi, Stanislav Michal, A. Taboada, A. Letessier-Selvon, A. Parra, Antonio Bueno, Daniel Kuempel, M. Wirtz, Isabel Goos, Lorenzo Cazon, R. M. de Almeida, Kevin-Druis Merenda, D. Heck, G. P. Guedes, Roger W Clay, A. van Vliet, Frank G. Schröder, Toshihiro Fujii, P. Ristori, M. del Río, Bruce R. Dawson, Tim Huege, M. Trini, P.F. Gómez Vitale, Gualberto Avila, P.O. Mazur, David Wittkowski, J. Rodriguez Rojo, Jakub Juryšek, J. Debatin, Ivone F. M. Albuquerque, Angela V. Olinto, G. Salina, Danielle LaHurd, Olivier Deligny, Charles Timmermans, Lukas Middendorf, Fridtjof Feldbusch, Ioana Codrina Maris, M. I. Micheletti, Antonio Condorelli, R. Lorek, Giuseppe De Mauro, J. F. Valdés Galicia, G. C. Hill, Ugo Giaccari, Jorge F. Soriano, Enrique Zas, A. Cancio, Ralph Engel, Rodrigo Pelayo, Q. Dorosti, J. Ridky, Stijn Buitink, Christine Peters, M. Scornavacche, M. Zavrtanik, M. Schimp, M. Risse, Juan Carlos D'Olivo, T. Pierog, Justin M. Albury, Max Malacari, Lili Yang, Markus Roth, I. Allekotte, John Farmer, Piotr Homola, Fernando Contreras, E.M. Holt, Giovanni Consolati, B. C. Manning, Jonathan Blazek, R. Ramos-Pollan, L. Nellen, Piera Luisa Ghia, M. Josebachuili, C. Morello, A. Tapia, Jonathan Biteau, Dariusz Gora, Maria-Teresa Dova, Giovanni Marsella, D. Nosek, Luis A. Anchordoqui, Benedikt Zimmermann, Rúben Conceição, E. Santos, Alessio Gorgi, A. C. Fauth, Vladimir Lenok, L. Perrone, M. A. Leigui de Oliveira, A.M. van den Berg, Darko Veberič, G. Torralba Elipe, Philipp Papenbreer, G. Parente, Fabrizia Canfora, A. Aab, R. Krause, L. Valore, G. Morlino, Hernán Asorey, A. Bridgeman, Esteban Roulet, Petr Travnicek, Carla Bonifazi, S. J. Saffi, Alan Coleman, Trent D. Grubb, Jose A. Bellido, Carola Dobrigkeit, L. Zehrer, Thomas Harrison, D. Melo, R. Legumina, G. Kukec Mezek, M. J. Roncoroni, D. Nitz, Nicolas Martin Gonzalez, Peter L. Biermann, R.C. dos Anjos, L. A. S. Pereira, M.P. Panetta, Petr Schovanek, A. Puyleart, Corinne Berat, M. Giller, S. Baur, M. Stolpovskiy, Juan Manuel Figueira, Roberta Colalillo, M. Palatka, Jan Pękala, A. G. Mariazzi, M. Perlin, Luis Villaseñor, Alan Watson, M. E. Bertaina, A. Menshikov, F. Pedreira, J. Phuntsok, A. Weindl, Raul Sarmento, Paolo Privitera, D. Lo Presti, S. J. De Jong, Patricia María Hansen, Marvin Gottowik, N. Kemmerich, Martina Bohacova, K.-H. Becker, M. Pimenta, Eric Mayotte, Jeffrey A. Johnsen, S. Quinn, Xavier Bertou, Felix Schlüter, Mihai Niculescu-Oglinzanu, A. Zepeda, L. R. Wiencke, I.D. Vergara Quispe, J. Alvarez Castillo, P. Ruehl, Pedro Assis, Maximilian Reininghaus, M. Schimassek, J. de Oliveira, Alejandro Almela, C. Hojvat, Marco Giammarchi, Jan Ebr, Fabian Gobbi, Jarryd A. Day, A. Etchegoyen, David Schmidt, A. M. Botti, Roberto Mussa, M. Gómez Berisso, R. C. Shellard, Juan Pablo Gongora, Günter Sigl, Tobias Winchen, R. Sato, Florian Lukas Briechle, Denis Stanca, P. Stassi, Paul Sommers, Radomir Smida, F. Guarino, John Matthews, A. Blanco, O. C. Lippmann, A.C. Cobos Cerutti, B. Vargas Cárdenas, T. Suomijärvi, Peter Buchholz, J. Pallotta, C. Sarmiento-Cano, Jacco Vink, Thomas Bretz, H.O. Klages, Corbin Covault, J. R. T. de Mello Neto, Miroslav Hrabovský, M. Urban, M. Mastrodicasa, Matias Tueros, François Montanet, Lourenco Lopes, Mario Buscemi, B. L. Lago, S. Schröder, M. J. Cooper, F. Sánchez, V. de Souza, A. C. Rovero, Niraj Dhital, J. Rautenberg, C. Bleve, M. Wiedeński, Marco Aglietta, Dusan Mandat, I. Valiño, Matías Rolf Hampel, Alexandru Balaceanu, A. Haungs, Francesco Fenu, A. Kuotb Awad, S. G. Blaess, Lino Miramonti, A. A. Nucita, Jaime Alvarez-Muñiz, Jesús Peña-Rodríguez, P. Abreu, B. Mitrica, D. Ravignani, Heino Falcke, V. Novotny, Alexandru Gherghel-Lascu, Eleonora Guido, Rossella Caruso, A. Lucero, Fernando Catalani, S. Mathys, Luis A. Nunez, I. Jandt, Ralf Ulrich, Marcio Aparecido Muller, M. Suárez-Durán, Carla Aramo, Jörg R. Hörandel, P. Mantsch, J. Vicha, Z. Szadkowski, Daniela Mockler, Vincenzo Rizi, Julien Souchard, D. Martello, I. Lhenry-Yvon, Miroslav Pech, M. Ziolkowski, M. Platino, F.O. de Oliveira Salles, P. Savina, G. Golup, Paula Gina Isar, Maria Rita Coluccia, Bruno Daniel, G. Mancarella, B. Keilhauer, Pavel Horvath, W. Rodrigues de Carvalho, Marcus Niechciol, Silvia Mollerach, O. Martínez Bravo, Julian Kemp, Rodrigo Guedes Lang, Belén Andrada, S. J. Sciutto, P. van Bodegom, S. Müller, Juan Miguel Carceller, Alex Kääpä, S. Querchfeld, Nataliia Borodai, N. Fazzini, Jonas Glombitza, F. C. T. Barbato, A. Fuster, Sofia Andringa, H. Gemmeke, M. Unger, A. D. Supanitsky, J. Šupík, Carlo Ventura, Andrej Dundovic, Lorenzo Caccianiga, B. Wundheiler, Andres Travaini, Gregory R Snow, E. Varela, J.D. Sanabria Gomez, J. Chudoba, H. Schieler, Karl-Heinz Kampert, Ladislav Chytka, L. Calcagni, Kai Daumiller, Antonella Castellina, Alena Bakalova, J. Stasielak, S. Coutu, Gaia Silli, P. Heimann, Serguei Vorobiov, A. Filipčič, Federico Suarez, O. A. Taborda, C. Porowski, H. Martinez, F. Sarazin, Marcos Cerda, Denise Boncioli, G. Cataldi, V. Scherini, Valerio Verzi, B. Tome, Alexandra Saftoiu, Thomas Hebbeker, S. Petrera, Marc Weber, Sergio Dasso, Tristan Sudholz, Ivan De Mitri, Martín Miguel Freire, Jeffrey Brack, Olaf Scholten, Humberto Ibarguen Salazar, F. Riehn, Miguel Mostafa, C. O. Escobar, A. Insolia, M. Kleifges, D. Zavrtanik, A. López Casado, Samo Stanič, Dariusz Glas, Bjarni Pont, R.J. Barreira Luz, Johannes Schumacher, Violet M. Harvey, D. Harari, F. Salamida, A. Yushkov, L.P. Ferreyro, Alina Mihaela Badescu, M. Prouza, R. Squartini, Alfred Müller, G. Medina-Tanco, R. Halliday, J. Hulsman, J. Poh, Valerio Pirronello, C. J. Todero Peixoto, L. Noža, H. Wilczyński, Aab A., Abreu P., Aglietta M., Albuquerque I.F.M., Albury J.M., Allekotte I., Almela A., Alvarez Castillo J., Alvarez-Muniz J., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Barreira Luz R.J., Baur S., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Biteau J., Blaess S.G., Blanco A., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Borodai N., Botti A.M., Brack J., Bretz T., Bridgeman A., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Calcagni L., Cancio A., Canfora F., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Chudoba J., Chytka L., Clay R.W., Cobos Cerutti A.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Cooper M.J., Coutu S., Covault C.E., Daniel B., Dasso S., Daumiller K., Dawson B.R., Day J.A., de Almeida R.M., de Jong S.J., Mauro G., de Mello Neto J.R.T., Mitri I., de Oliveira J., de Oliveira Salles F.O., de Souza V., Debatin J., del Rio M., Deligny O., Dhital N., Diaz Castro M.L., Diogo F., Dobrigkeit C., D'Olivo J.C., Dorosti Q., dos Anjos R.C., Dova M.T., Dundovic A., Ebr J., Engel R., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Ferreyro L.P., Figueira J.M., Filipcic A., Freire M.M., Fujii T., Fuster A., Garcia B., Gemmeke H., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glas D., Glombitza J., Gobbi F., Golup G., Gomez Berisso M., Gomez Vitale P.F., Gongora J.P., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Halliday R., Hampel M.R., Hansen P., Harari D., Harrison T.A., Harvey V.M., Haungs A., Hebbeker T., Heck D., Heimann P., Hill G.C., Hojvat C., Holt E.M., Homola P., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Jandt I., Johnsen J.A., Josebachuili M., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemmerich N., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Krause R., Kuempel D., Kukec Mezek G., Kuotb Awad A., Lago B.L., LaHurd D., Lang R.G., Legumina R., Leigui de Oliveira M.A., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Lippmann O.C., Lo Presti D., Lopes L., Lopez R., Lopez Casado A., Lorek R., Luce Q., Lucero A., Malacari M., Mancarella G., Mandat D., Manning B.C., Mantsch P., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Martinez Bravo O., Mastrodicasa M., Mathes H.J., Mathys S., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Middendorf L., Miramonti L., Mitrica B., Mockler D., Mollerach S., Montanet F., Morello C., Morlino G., Mostafa M., Muller A.L., Muller M.A., Muller S., Mussa R., Nellen L., Nguyen P.H., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Noza L., Nucita A., Nunez L.A., Olinto A., Palatka M., Pallotta J., Panetta M.P., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pekala J., Pelayo R., Pena-Rodriguez J., Pereira L.A.S., Perlin M., Perrone L., Peters C., Petrera S., Phuntsok J., Pierog T., Pimenta M., Pirronello V., Platino M., Poh J., Pont B., Porowski C., Prado R.R., Privitera P., Prouza M., Puyleart A., Querchfeld S., Quinn S., Ramos-Pollan R., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Ristori P., Rizi V., Rodrigues de Carvalho W., Rodriguez Rojo J., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Sanabria Gomez J.D., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schauer M., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schumacher J., Sciutto S.J., Scornavacche M., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Snow G.R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stanca D., Stanic S., Stasielak J., Stassi P., Stolpovskiy M., Streich A., Suarez F., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Taborda O.A., Tapia A., Timmermans C., Todero Peixoto C.J., Tome B., Torralba Elipe G., Travaini A., Travnicek P., Trini M., Tueros M., Ulrich R., Unger M., Urban M., Valdes Galicia J.F., Valino I., Valore L., van Bodegom P., van den Berg A.M., van Vliet A., Varela E., Vargas Cardenas B., Veberic D., Ventura C., Vergara Quispe I.D., Verzi V., Vicha J., Villasenor L., Vink J., Vorobiov S., Wahlberg H., Watson A.A., Weber M., Weindl A., Wiedenski M., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yang L., Yushkov A., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., Zepeda A., Zimmermann B., Ziolkowski M., Zong Z., Zuccarello F., Aab, A., Abreu, P., Aglietta, M., Albuquerque, I. F. M., Albury, J. M., Allekotte, I., Almela, A., Alvarez Castillo, J., Alvarez-Muniz, J., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Baur, S., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Biteau, J., Blaess, S. G., Blanco, A., Blazek, J., Bleve, C., Bohacova, M., Boncioli, D., Bonifazi, C., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Bridgeman, A., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Calcagni, L., Cancio, A., Canfora, F., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceicao, R., Condorelli, A., Consolati, G., Contreras, F., Cooper, M. J., Coutu, S., Covault, C. E., Daniel, B., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jong, S. J., Mauro, G., de Mello Neto, J. R. T., Mitri, I., de Oliveira, J., de Oliveira Salles, F. O., de Souza, V., Debatin, J., del Rio, M., Deligny, O., Dhital, N., Diaz Castro, M. L., Diogo, F., Dobrigkeit, C., D'Olivo, J. C., Dorosti, Q., dos Anjos, R. C., Dova, M. T., Dundovic, A., Ebr, J., Engel, R., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Ferreyro, L. P., Figueira, J. M., Filipcic, A., Freire, M. M., Fujii, T., Fuster, A., Garcia, B., Gemmeke, H., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glas, D., Glombitza, J., Gobbi, F., Golup, G., Gomez Berisso, M., Gomez Vitale, P. F., Gongora, J. P., Gonzalez, N., Goos, I., Gora, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Halliday, R., Hampel, M. R., Hansen, P., Harari, D., Harrison, T. A., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Heimann, P., Hill, G. C., Hojvat, C., Holt, E. M., Homola, P., Horandel, J. R., Horvath, P., Hrabovsky, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Jandt, I., Johnsen, J. A., Josebachuili, M., Jurysek, J., Kaapa, A., Kampert, K. H., Keilhauer, B., Kemmerich, N., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Krause, R., Kuempel, D., Kukec Mezek, G., Kuotb Awad, A., Lago, B. L., Lahurd, D., Lang, R. G., Legumina, R., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lippmann, O. C., Lo Presti, D., Lopes, L., Lopez, R., Lopez Casado, A., Lorek, R., Luce, Q., Lucero, A., Malacari, M., Mancarella, G., Mandat, D., Manning, B. C., Mantsch, P., Mariazzi, A. G., Maris, I. C., Marsella, G., Martello, D., Martinez, H., Martinez Bravo, O., Mastrodicasa, M., Mathes, H. J., Mathys, S., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Middendorf, L., Miramonti, L., Mitrica, B., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Morlino, G., Mostafa, M., Muller, A. L., Muller, M. A., Muller, S., Mussa, R., Nellen, L., Nguyen, P. H., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Noza, L., Nucita, A., Nunez, L. A., Olinto, A., Palatka, M., Pallotta, J., Panetta, M. P., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pekala, J., Pelayo, R., Pena-Rodriguez, J., Pereira, L. A. S., Perlin, M., Perrone, L., Peters, C., Petrera, S., Phuntsok, J., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Poh, J., Pont, B., Porowski, C., Prado, R. R., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Quinn, S., Ramos-Pollan, R., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., Sanchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schauer, M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schluter, F., Schmidt, D., Scholten, O., Schovanek, P., Schroder, F. G., Schroder, S., Schumacher, J., Sciutto, S. J., Scornavacche, M., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Smida, R., Snow, G. R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stanca, D., Stanic, S., Stasielak, J., Stassi, P., Stolpovskiy, M., Streich, A., Suarez, F., Suarez-Duran, M., Sudholz, T., Suomijarvi, T., Supanitsky, A. D., Supik, J., Szadkowski, Z., Taboada, A., Taborda, O. A., Tapia, A., Timmermans, C., Todero Peixoto, C. J., Tome, B., Torralba Elipe, G., Travaini, A., Travnicek, P., Trini, M., Tueros, M., Ulrich, R., Unger, M., Urban, M., Valdes Galicia, J. F., Valino, I., Valore, L., van Bodegom, P., van den Berg, A. M., van Vliet, A., Varela, E., Vargas Cardenas, B., Veberic, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Villasenor, L., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiedenski, M., Wiencke, L., Wilczynski, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yang, L., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Zimmermann, B., Ziolkowski, M., Zong, Z., Zuccarello, F., Physics, ITA, and Research unit Astroparticle Physics
Subjects: 010504 meteorology & atmospheric sciences, Astronomy, Field of view, 010502 geochemistry & geophysics, 01 natural sciences, 7. Clean energy, Auger, lcsh:QB1-991, Observatory, ultraviolet, Storm, ddc:550, UHE Cosmic Rays, time resolution, Cosmic-ray observatory, Physics, lcsh:QE1-996.5, astro-ph, Geology, width [beam], Ionosphere, lcsh:Astronomy, UHE [cosmic radiation], Environmental Science (miscellaneous), horizon, Lightning, ddc:530, High Energy Physics, 0105 earth and related environmental sciences, fluorescence [detector], background, Física, sensitivity, optics, lcsh:Geology, Elves, UV fluorescence detectors, Thunderstorm, 13. Climate action, Experimental High Energy Physics, network, General Earth and Planetary Sciences, Elves
Abstract: The time and location of the 1,598 verified and reconstructed elves, used for the analysis showcased in this paper, are publicly available on the website of the Pierre Auger Observatory (https://www.auger.org/ index.php/science/data). We wish to thank the World Wide Lightning Location Network (http://wwlln.net), a collaboration among over 50 universities and institutions, for providing the lightning location data used in this paper. We acknowledge Robert Marshall for providing one of the most advanced elve simulations to the public, a key tool in understanding the elves observed by the Pierre Auger Observatory. The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargüe., Elves are a class of transient luminous events, with a radial extent typically greater than 250 km, that occur in the lower ionosphere above strong electrical storms. We report the observation of 1,598 elves, from 2014 to 2016, recorded with unprecedented time resolution (100 ns) using the fluorescence detector (FD) of the Pierre Auger Cosmic-Ray Observatory. The Auger Observatory is located in the Mendoza province of Argentina with a viewing footprint for elve observations of 3 · 106 km2, reaching areas above the Pacific and Atlantic Oceans, as well as the Córdoba region, which is known for severe convective thunderstorms. Primarily designed for ultrahigh energy cosmic-ray observations, the Auger FD turns out to be very sensitive to the ultraviolet emission in elves. The detector features modified Schmidt optics with large apertures resulting in a field of view that spans the horizon, and year-round operation on dark nights with low moonlight background, when the local weather is favorable. The measured light profiles of 18% of the elve events have more than one peak, compatible with intracloud activity. Within the 3-year sample, 72% of the elves correlate with the far-field radiation measurements of the World Wide Lightning Location Network. The Auger Observatory plans to continue operations until at least 2025, including elve observations and analysis. To the best of our knowledge, this observatory is the only facility on Earth that measures elves with year-round operation and full horizon coverage., Argentina—Comisión Nacional de Energía Atómica; Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargüe; and NDM Holdings and Valle Las Leñas, in gratitude for their continuing cooperation over land access; Australia—the Australian Research Council; Brazil—Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Financiadora de Estudos e Projetos (FINEP); Fundação de Amparo à Pesquisa do Estado de Rio de Janeiro (FAPERJ); São Paulo Research Foundation (FAPESP) Grants 2010/07359-6 and 1999/05404-3; Ministério da Ciência, Tecnologia, Inovações e Comunicações (MCTIC); Czech Republic—Grants MSMT CRLTT18004, LO1305, LM2015038, and CZ.02.1.01/0.0/0.0/16_013/0001402; France—Centre de Calcul IN2P3/CNRS; Centre National de la Recherche Scientifique (CNRS); Conseil Régional Ile-de-France; Département Physique Nucléaire et Corpusculaire (PNC-IN2P3/CNRS); Département Sciences de l'Univers (SDU-INSU/CNRS); Institut Lagrange de Paris (ILP) Grant LABEX ANR-10-LABX-63 within the Investissements d'Avenir Programme Grant ANR-11-IDEX-0004-02; Germany—Bundesministerium für Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Finanzministerium Baden-Württemberg; Helmholtz Alliance for Astroparticle Physics (HAP); Helmholtz-Gemeinschaft. Deutscher Forschungszentren (HGF); Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen; Ministerium für Wissenschaft, Forschung und Kunst des Landes Baden-Württemberg; Italy—Istituto Nazionale di Fisica Nucleare (INFN); Istituto Nazionale di Astrofisica (INAF); Ministero dell'Istruzione, dell'Universitá e della Ricerca (MIUR); CETEMPS Center of Excellence; Ministero degli Affari Esteri (MAE); México—Consejo Nacional de Ciencia y Tecnología (CONACYT)167733; Universidad Nacional Autónoma de México (UNAM); PAPIIT DGAPA-UNAM; The Netherlands—Ministry of Education, Culture and Science; Netherlands Organisation for Scientific Research (NWO); Dutch National e-Infrastructure with the support of SURF Cooperative; Poland—National Centre for Research and Development, Grant ERA-NET-ASPERA/02/11; National Science Centre, Grants 2013/08/M/ST9/00322, 2016/23/B/ST9/01635, and HARMONIA 5–2013/10/M/ST9/00062, UMO-2016/22/M/ST9/00198; Portugal—Portuguese national funds and FEDER funds within Programa Operacional Factores de Competitividade through Fundação para a Ciência e a Tecnologia (COMPETE); Romania—Romanian Ministry of Research and InnovationCNCS/CCCDI-UESFISCDI, projects PN-III-P1-1.2-PCCDI-2017- 0839/19PCCDI/2018, PN-III-P2-2.1-PED-2016-1922, PN-III-P2-2.1-PED-2016-1659, and PN18090102 within PNCDI III; Slovenia—Slovenian Research Agency; Spain—Comunidad de Madrid; Fondo Europeo de Desarrollo Regional (FEDER) funds; Ministerio de Economía y Competitividad; Xunta de Galicia; European Community 7th Framework Program Grant FP7-PEOPLE-2012-IEF-328826; USA—Department of Energy, Contracts DE-AC02-07CH11359, DE-FR02-04ER41300, DE-FG02-99ER41107, and DE-SC0011689; National Science Foundation, Grant 0450696; The Grainger Foundation; Marie Curie-IRSES/EPLANET; European Particle Physics Latin American Network; European Union 7th Framework Program, Grant PIRSES-2009-GA-246806; and UNESCO.
Published: 2020
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36. Reconstruction of events recorded with the surface detector of the Pierre Auger Observatory

Author: Roberto Mussa, M. I. Micheletti, B. Tome, François Montanet, M. Schimassek, Frank G. Schröder, Peter Hansen, F. Guarino, John Matthews, Ioana Codrina Maris, Peter Buchholz, C. Hojvat, G. C. Hill, Jorge F. Soriano, Vladimir Lenok, Ralph Engel, L. Perrone, Jan Ebr, J. Ridky, Denis Stanca, A. Aab, Brian Fick, Eleonora Guido, Luis Villaseñor, John Farmer, Marco Aglietta, Markus Roth, Lorenzo Caccianiga, Julien Manshanden, Andres Travaini, E. Varela, H. J. Mathes, Maximilian Reininghaus, J.D. Sanabria Gomez, L. Nellen, B. Vargas Cárdenas, Maria-Teresa Dova, Jacco Vink, H.O. Klages, P. Savina, W. Rodrigues de Carvalho, Bjarni Pont, Stanislav Michal, C. Morello, Miroslav Pech, T. Suomijärvi, J. Pallotta, Alena Bakalova, M. Pothast, Pavel Horvath, B. L. Lago, Ralf Ulrich, A. M. Botti, Dusan Mandat, M. L. Díaz Castro, Teresa Bister, Valerio Verzi, M. R. Hampel, Valerio Pirronello, Niraj Dhital, J. Rodriguez Rojo, I. Valiño, Marvin Gottowik, Peter L. Biermann, Jeffrey A. Johnsen, A. A. Nucita, B. Andrada, Fridtjof Feldbusch, L. Calcagni, C. J. Todero Peixoto, Carla Bleve, Rodrigo Guedes Lang, Eric Mayotte, M. Gómez Berisso, G. Farrar, R. C. Shellard, Francesca Zuccarello, K. Choi, Matias Tueros, Sofia Andringa, Paula Gina Isar, F. Riehn, Marina Scornavacche, Paolo Privitera, Kai Daumiller, Günter Sigl, Paul Sommers, A. Blanco, L. Nožka, Enrique Zas, Fernando Contreras, Fred Sarazin, G. De Mauro, Mario Buscemi, Luis A. Anchordoqui, P. Tobiska, A. C. Fauth, Nataliia Borodai, Philipp Papenbreer, Jonathan Biteau, Nicolás González, T. Huege, R.J. Barreira Luz, Petr Travnicek, M. Schimp, F. Sánchez, Antonio Condorelli, Christine Peters, Luis A. Nunez, H. Wilczyński, M. Zavrtanik, P. Stassi, Jörg R. Hörandel, Darko Veberič, R.C. dos Anjos, Radomir Smida, Adriana Vásquez-Ramírez, A. Machado Payeras, Carla Bonifazi, M. Palatka, B. C. Manning, Jose A. Bellido, Isabel Goos, Jeffrey Brack, Olaf Scholten, Trent D. Grubb, Christian Sarmiento-Cano, Humberto Ibarguen Salazar, Fabio Convenga, Martin Vacula, Marcus Niechciol, D. Heck, A.L. Garcia Vegas, R. Squartini, E. De Vito, Giovanni Consolati, M. A. Muller, Alfred Müller, A. Di Matteo, A. Taboada, M. del Río, I. Lhenry-Yvon, Juan Manuel Figueira, Jesús Peña-Rodríguez, Francesco Fenu, B. Wundheiler, A. Puyleart, Corinne Berat, M. Giller, Roberta Colalillo, Fernando Gollan, Maria Rita Coluccia, A. G. Mariazzi, Heino Falcke, A. Fuster, J. Vicha, S. Querchfeld, Gaia Silli, I.D. Vergara Quispe, P.F. Gómez Vitale, D. Nosek, M.P. Panetta, Miguel Mostafa, Petr Schovanek, G. Medina-Tanco, R. Halliday, Charles Timmermans, V. de Souza, Olena Tkachenko, Martina Bohacova, A. Filipčič, F. Salamida, Hernán Asorey, A. Yushkov, G. Matthiae, Antonio Bueno, E. Santos, J. Šupík, Carlo Ventura, Hernan Wahlberg, D. Melo, A. Tapia, Juan Pablo Gongora, G. Torralba Elipe, H. Gemmeke, J. Rautenberg, Gualberto Avila, S. Petrera, Marc Weber, Q. Luce, G. P. Guedes, Toshihiro Fujii, G. Marsella, Dariusz Gora, Ladislav Chytka, Massimo Mastrodicasa, L. Valore, M. Unger, D. Mockler, A. Parra, P. Ruehl, Samo Stanič, A. Weindl, E. M. Santos, Maximilian Stadelmaier, R. Sato, G. Golup, J. F. Valdés Galicia, I. De Mitri, Jakub Juryšek, J. Debatin, A. Bridgeman, Alan Coleman, V. Novotny, J. Hulsman, Rossella Caruso, A. Lucero, Fernando Catalani, David Schmidt, S. Schröder, S. J. Saffi, R. Alves Batista, Bruce R. Dawson, Caterina Trimarelli, Italo Epicoco, Steffen Hahn, P. Ristori, P.O. Mazur, Juan Carlos D'Olivo, T. Pierog, D. Lo Presti, Sullivan Marafico, M. Trini, M. A. Leigui de Oliveira, Xavier Bertou, A. Zepeda, Violet M. Harvey, D. Harari, Esteban Roulet, Pedro Assis, H. Martinez, S. J. De Jong, A. Etchegoyen, Justin M. Albury, Pierre Billoir, F. Pedreira, Marco Giammarchi, Raul Sarmento, Jarryd A. Day, A. Saftoiu, Felix Schlüter, A. Cancio, J. Stasielak, Fabian Gobbi, Piera Luisa Ghia, A.C. Cobos Cerutti, Thomas Hebbeker, Sergio Dasso, Tristan Sudholz, Alina Mihaela Badescu, Cristina Galea, Martín Miguel Freire, M. Prouza, J. R. T. de Mello Neto, I. Allekotte, M. J. Roncoroni, L. Bonneau Arbeletche, Denise Boncioli, R. M. de Almeida, Jose Chinellato, Rodrigo Pelayo, Stijn Buitink, Ioana Caracas, A. Letessier-Selvon, Lorenzo Cazon, Alessio Gorgi, Orazio Zapparrata, Carola Dobrigkeit, M. Muzio, A. van Vliet, David Wittkowski, G. Salina, Danielle LaHurd, Olivier Deligny, Tomáš Fodran, R. Lorek, Ugo Giaccari, Alan Watson, M. Perlin, Mihai Niculescu-Oglinzanu, J. Alvarez Castillo, Julian Kemp, R. Conceição, Miroslav Hrabovský, A. Haungs, P. Mantsch, Z. Szadkowski, Alex Kääpä, Octavian Sima, L. Lopes, Jaime Alvarez-Muñiz, H. Schieler, Alexandru Gherghel-Lascu, Q. Dorosti, Lukáš Vaclavek, G. Mancarella, B. Keilhauer, André Schulz, Karl-Heinz Kampert, S. J. Sciutto, Juan Miguel Carceller, Antonella Castellina, D. Nitz, M. Risse, L. R. Wiencke, Jonathan Blazek, C. M. Schäfer, G. 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C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceicao, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., De Almeida, R. M., De Jesus, J., De Jong, S. J., Mauro, G. D., Neto, J. R. T. D. M., Mitri, I. D., De Oliveira, J., Franco, D. D. O., De Souza, V., Vito, E. D., Debatin, J., Rio, M. D., Deligny, O., Dhital, N., Matteo, A. D., Castro, M. L. D., Dobrigkeit, C., D'Olivo, J. C., Dorosti, Q., Anjos, R. C. D., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipcic, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., Garcia, B., Vegas, A. L. G., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Berisso, M. G., Vitale, P. 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O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Mostafa, M., Muller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nellen, L., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nozka, L., Nucita, A., Nuñez, L. A., Palatka, M., Pallotta, J., Panetta, M. P., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pkala, J., Pelayo, R., Peña-Rodriguez, J., Armand, J. P., Perlin, M., Perrone, L., Peters, C., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., De Carvalho, W. R., Rojo, J. R., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. 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V., Vasquez-Ramirez, A., Veberic, D., Ventura, C., Quispe, I. D. V., Verzi, V., Vicha, J., Villaseñor, L., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczynski, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Ziolkowski, M., Zuccarello, F., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Pierre Auger, Research unit Astroparticle Physics, Physics, Elementary Particle Physics, Aab A., Abreu P., Aglietta M., Albury J.M., Allekotte I., Almela A., Castillo J.A., Alvarez-Muñiz J., Batista R.A., Anastasi G.A., Anchordoqui L., Andrada B., Andringa S., Aramo C., Ferreira P.R.A., Asorey H., Assis P., Avila G., Badescu A.M., Bakalova A., Balaceanu A., Barbato F., Luz R.J.B., Becker K.H., Bellido J.A., Berat C., Bertaina M.E., Bertou X., Biermann P.L., Billoir P., Bister T., Biteau J., Blanco A., Blazek J., Bleve C., Bohacova M., Boncioli D., Bonifazi C., Arbeletche L.B., Borodai N., Botti A.M., Brack J., Bretz T., Bridgeman A., Briechle F.L., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K.S., Caccianiga L., Calcagni L., Cancio A., Canfora F., Caracas I., Carceller J.M., Caruso R., Castellina A., Catalani F., Cataldi G., Cazon L., Cerda M., Chinellato J.A., Choi K., Chudoba J., Chytka L., Clay R.W., Cerutti A.C.C., Colalillo R., Coleman A., Coluccia M.R., Conceicao R., Condorelli A., Consolati G., Contreras F., Convenga F., Covault C.E., Dasso S., Daumiller K., Dawson B.R., Day J.A., De Almeida R.M., De Jesus J., De Jong S.J., Mauro G.D., Neto J.R.T.D.M., Mitri I.D., De Oliveira J., Franco D.D.O., De Souza V., Vito E.D., Debatin J., Rio M.D., Deligny O., Dhital N., Matteo A.D., Castro M.L.D., Dobrigkeit C., D'Olivo J.C., Dorosti Q., Anjos R.C.D., Dova M.T., Ebr J., Engel R., Epicoco I., Erdmann M., Escobar C.O., Etchegoyen A., Falcke H., Farmer J., Farrar G., Fauth A.C., Fazzini N., Feldbusch F., Fenu F., Fick B., Figueira J.M., Filipcic A., Fodran T., Freire M.M., Fujii T., Fuster A., Galea C., Galelli C., Garcia B., Vegas A.L.G., Gemmeke H., Gesualdi F., Gherghel-Lascu A., Ghia P.L., Giaccari U., Giammarchi M., Giller M., Glombitza J., Gobbi F., Gollan F., Golup G., Berisso M.G., Vitale P.F.G., Gongora J.P., Gonzalez N., Goos I., Gora D., Gorgi A., Gottowik M., Grubb T.D., Guarino F., Guedes G.P., Guido E., Hahn S., Halliday R., Hampel M.R., Hansen P., Harari D., Harvey V.M., Haungs A., Hebbeker T., Heck D., Hill G.C., Hojvat C., Horandel J.R., Horvath P., Hrabovsky M., Huege T., Hulsman J., Insolia A., Isar P.G., Johnsen J.A., Jurysek J., Kaapa A., Kampert K.H., Keilhauer B., Kemp J., Klages H.O., Kleifges M., Kleinfeller J., Kopke M., Mezek G.K., Lago B.L., Lahurd D., Lang R.G., De Oliveira M.A.L., Lenok V., Letessier-Selvon A., Lhenry-Yvon I., Presti D.L., Lopes L., Lopez R., Lorek R., Luce Q., Lucero A., Payeras A.M., Malacari M., Mancarella G., Mandat D., Manning B.C., Manshanden J., Mantsch P., Marafico S., Mariazzi A.G., Maris I.C., Marsella G., Martello D., Martinez H., Bravo O.M., Mastrodicasa M., Mathes H.J., Matthews J., Matthiae G., Mayotte E., Mazur P.O., Medina-Tanco G., Melo D., Menshikov A., Merenda K.-D., Michal S., Micheletti M.I., Miramonti L., Mockler D., Mollerach S., Montanet F., Morello C., Mostafa M., Muller A.L., Muller M.A., Mulrey K., Mussa R., Muzio M., Namasaka W.M., Nellen L., Niculescu-Oglinzanu M., Niechciol M., Nitz D., Nosek D., Novotny V., Nozka L., Nucita A., Nuñez L.A., Palatka M., Pallotta J., Panetta M.P., Papenbreer P., Parente G., Parra A., Pech M., Pedreira F., Pkala J., Pelayo R., Peña-Rodriguez J., Armand J.P., Perlin M., Perrone L., Peters C., Petrera S., Pierog T., Pimenta M., Pirronello V., Platino M., Pont B., Pothast M., Privitera P., Prouza M., Puyleart A., Querchfeld S., Rautenberg J., Ravignani D., Reininghaus M., Ridky J., Riehn F., Risse M., Ristori P., Rizi V., De Carvalho W.R., Rojo J.R., Roncoroni M.J., Roth M., Roulet E., Rovero A.C., Ruehl P., Saffi S.J., Saftoiu A., Salamida F., Salazar H., Salina G., Gomez J.D.S., Sanchez F., Santos E.M., Santos E., Sarazin F., Sarmento R., Sarmiento-Cano C., Sato R., Savina P., Schafer C., Scherini V., Schieler H., Schimassek M., Schimp M., Schluter F., Schmidt D., Scholten O., Schovanek P., Schroder F.G., Schroder S., Schulz A., Sciutto S.J., Scornavacche M., Shellard R.C., Sigl G., Silli G., Sima O., Smida R., Sommers P., Soriano J.F., Souchard J., Squartini R., Stadelmaier M., Stanca D., Stanic S., Stasielak J., Stassi P., Streich A., Suarez-Duran M., Sudholz T., Suomijarvi T., Supanitsky A.D., Supik J., Szadkowski Z., Taboada A., Tapia A., Timmermans C., Tkachenko O., Tobiska P., Peixoto C.J.T., Tome B., Elipe G.T., Travaini A., Travnicek P., Trimarelli C., Trini M., Tueros M., Ulrich R., Unger M., Urban M., Vaclavek L., Vacula M., Galicia J.F.V., Valiño I., Valore L., Vliet A.V., Varela E., Cardenas B.V., Vasquez-Ramirez A., Veberic D., Ventura C., Quispe I.D.V., Verzi V., Vicha J., Villaseñor L., Vink J., Vorobiov S., Wahlberg H., Watson A.A., Weber M., Weindl A., Wiencke L., Wilczynski H., Winchen T., Wirtz M., Wittkowski D., Wundheiler B., Yushkov A., Zapparrata O., Zas E., Zavrtanik D., Zavrtanik M., Zehrer L., Zepeda A., Ziolkowski M., Zuccarello F., and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: Physics::Instrumentation and Detectors, Astronomy, primary [cosmic radiation], 01 natural sciences, 030218 nuclear medicine & medical imaging, Auger, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0302 clinical medicine, surface [detector], Observatory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Data Processing, Large detector systems for particle and astroparticle physics, Large detector-systems performance, Performance of High Energy Physics Detectors, Instrumentation, Mathematical Physics, Largedetector-systems performance, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, astro-ph.HE, Instrumentation et méthodes en physique, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, cascade, observatory, Cascade, ddc:620, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, atmosphere [showers], air, Astrophysics::High Energy Astrophysical Phenomena, water, FOS: Physical sciences, Cosmic ray, Atmosphere, 03 medical and health sciences, Optics, 0103 physical sciences, High Energy Physics, 14. Life underwater, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], ddc:610, Instrumentation and Methods for Astrophysics (astro-ph.IM), Zenith, Engineering & allied operations, Pierre Auger Observatory, showers: atmosphere, 010308 nuclear & particles physics, business.industry, hep-ex, detector: surface, Autres mathématiques, cosmic radiation: primary, Cherenkov counter, Experimental High Energy Physics, Large detector systems for particle and astroparticle physic, High Energy Physics::Experiment, business, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], RAIOS CÓSMICOS, astro-ph.IM
Abstract: Cosmic rays arriving at Earth collide with the upper parts of the atmosphere, thereby inducing extensive air showers. When secondary particles from the cascade arrive at the ground, they are measured by surface detector arrays. We describe the methods applied to the measurements of the surface detector of the Pierre Auger Observatory to reconstruct events with zenith angles less than 60 using the timing and signal information recorded using the water-Cherenkov detector stations. In addition, we assess the accuracy of these methods in reconstructing the arrival directions of the primary cosmic ray particles and the sizes of the induced showers., Argentina - Comisión Nacional de Energía Atómica, Argentina - Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT), Argentina - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina - Gobierno de la Provincia de Mendoza, Argentina - Municipalidad de Malargue, Argentina - NDM Holdings, Argentina - Valle Las Lenas, Australia - Australian Research Council, National Council for Scientific and Technological Development (CNPq), Brazil - Financiadora de Estudos e Projetos (FINEP), Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) 2019/10151-2 2010/07359-6 1999/05404-3, Brazil - Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes (MCTIC), Czech Republic Grant MSMT CR LTT18004 LM2015038 LM2018102 CZ.02.1.01/0.0/0.0/16_013/0001402 CZ.02.1.01/0.0/0.0/18_046/0016010 CZ.02.1.01/0.0/0.0/17_049/0008422, France - Centre de Calcul IN2P3/CNRS, Centre National de la Recherche Scientifique (CNRS), France - Conseil Regional Ile-de-France, France - Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), France - Departement Sciences de l'Univers (SDU-INSU/CNRS), French National Research Agency (ANR) LABEX ANR-10-LABX-63 ANR11-IDEX-0004-02, Federal Ministry of Education & Research (BMBF), German Research Foundation (DFG), Germany - Finanzministerium Baden-Wurttemberg, Germany - Helmholtz Alliance for Astroparticle Physics (HAP), Germany - Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany - Min-isterium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, Germany - Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg, Italy - Istituto Nazionale di Fisica Nucleare (INFN), Italy - Istituto Nazionale di Astrofisica (INAF), Italy - Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy - CETEMPS Center of Excellence, Italy - Ministero degli Affari Esteri (MAE), Consejo Nacional de Ciencia y Tecnología (CONACyT) 167733, México - Universidad Nacional Autónoma de México (UNAM), México - PAPIIT DGAPA-UNAM, The Netherlands - Ministry of Education, Culture and Science, Netherlands Organization for Scientific Research (NWO), The Netherlands - Dutch national e-infrastructure, The Netherlands - SURF Cooperative, Poland - Ministry of Science and Higher Education DIR/WK/2018/11, Poland - National Science Centre 2013/08/M/ST9/00322 2016/23/B/ST9/01635 HARMONIA 52013/10/M/ST9/00062 UMO-2016/22/M/ST9/00198, Portugal - Portuguese national funds, Portugal - FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE), Romania - Romanian Ministry of Education and Research, the Program Nucleu within MCI PN19150201/16N/2019 PN19060102, Romania - Romanian Ministry of Education and Research, the Program Nucleu within PNCDI III PN-III-P11.2-PCCDI-2017-0839/19PCCDI/2018, Slovenian Research Agency - Slovenia P1-0031 P1-0385 I0-0033 N1-0111, Spain - Ministerio de Economía, Industria y Competitividad FPA2017-85114-P FPA2017-85197-P, Spain - Xunta de Galicia ED431C 2017/07, Junta de Andalucía SOMM17/6104/UGR, Spain - Feder Funds, Spain - RENATARedNacional Tematica de Astroparticulas FPA2015-68783-REDT, Spain - Maria de MaeztuUnit of Excellence MDM-2016-0692, United States Department of Energy (DOE) DE-AC02-07CH11359 DE-FR02-04ER41300 DEFG02-99ER41107 DE-SC0011689, National Science Foundation (NSF) 0450696, U.S.A. - Grainger Foundation, U.S.A. - Marie Curie-IRSES/EPLANET, U.S.A. - European Particle Physics Latin American Network, U.S.A. - UNESCO
Published: 2020
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37. On the cosmic-ray energy scale of the LOFAR radio telescope

Author: Arthur Corstanje, A. Nelles, Katharine Mulrey, Brian Hare, Tobias Winchen, G. K. Krampah, Satyendra Thoudam, Tim Huege, Jörg P. Rachen, Olaf Scholten, Pragati Mitra, S. ter Veen, Stijn Buitink, T. N. G. Trinh, Jörg R. Hörandel, Heino Falcke, H. Pandya, Physics, Faculty of Sciences and Bioengineering Sciences, Elementary Particle Physics, and Astronomy
Subjects: detector [cosmic radiation], air, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, magnetic field, Cosmic ray, 7. Clean energy, 01 natural sciences, Electromagnetic radiation, Radio telescope, energy [cosmic radiation], electromagnetic [energy], 0103 physical sciences, plastics [scintillation counter], ddc:530, energy [radiation], Instrumentation and Methods for Astrophysics (astro-ph.IM), High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Pierre Auger Observatory, Physics, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Radiant energy, Astronomy and Astrophysics, LOFAR, calibration, Auger, Computational physics, observatory, detector [radio wave], Air shower, Antenna (radio), Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, Energy (signal processing), astro-ph.IM, atmosphere [showers]
Abstract: Cosmic rays are routinely measured at LOFAR, both with a dense array of antennas and with the LOFAR Radboud air shower Array (LORA) which is an array of plastic scintillators. In this paper, we present two results relating to the cosmic-ray energy scale of LOFAR. First, we present the reconstruction of cosmic-ray energy using radio and particle techniques along with a discussion of the event-by-event and absolute scale uncertainties. The resulting energies reconstructed with each method are shown to be in good agreement, and because the radio-based reconstructed energy has smaller uncertainty on an event-to-event basis, LOFAR analyses will use that technique in the future. Second, we present the radiation energy of air showers measured at LOFAR and demonstrate how radiation energy can be used to compare the energy scales of different experiments. The radiation energy scales quadratically with the electromagnetic energy in an air shower, which can in turn be related to the energy of the primary particle. Once the local magnetic field is accounted for, the radiation energy allows for a direct comparison between the LORA particle-based energy scale and that of the Pierre Auger Observatory. They are shown to agree to within (6$\pm$20)% for a radiation energy of 1 MeV, where the uncertainty on the comparison is dominated by the antenna calibrations of each experiment. This study motivates the development of a portable radio array which will be used to cross-calibrate the energy scales of different experiments using radiation energy and the same antennas, thereby significantly reducing the uncertainty on the comparison.
Published: 2020
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38. Direct measurement of the muonic content of extensive air showers between $\mathbf { 2\times 10^{17}}$ and $\mathbf {2\times 10^{18}}~$eV at the Pierre Auger Observatory

Author: P. Tobiska, Bjarni Pont, H. J. Mathes, Stanislav Michal, S. Schröder, Italo Epicoco, A. Di Matteo, L. Lopes, B. Wundheiler, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, Lukáš Vaclavek, B. Keilhauer, Ioana Codrina Maris, S. J. Sciutto, J. Rodriguez Rojo, Fridtjof Feldbusch, Alessio Gorgi, D. Melo, G. C. Hill, Juan Miguel Carceller, Jorge F. Soriano, Ralph Engel, Enrique Zas, Orazio Zapparrata, J. Stasielak, L. Calcagni, Kai Daumiller, R. Sato, J. Ridky, Roberto Mussa, Fernando Contreras, Luis Villaseñor, J. Rautenberg, K.-H. Becker, Q. Luce, M. Pimenta, Carola Dobrigkeit, M. Muzio, Maximilian Stadelmaier, Darko Veberič, Maximilian Reininghaus, J. F. Valdés Galicia, I. De Mitri, P.R. Araújo Ferreira, Tobias Winchen, Marvin Gottowik, François Montanet, Alan Watson, M. A. Leigui de Oliveira, M. Perlin, Eric Mayotte, M. Gómez Berisso, Mihai Niculescu-Oglinzanu, J. Alvarez Castillo, Gaia Silli, A. Filipčič, Eleonora Guido, R. C. Shellard, Florian Lukas Briechle, F. Sarazin, T. Huege, Heino Falcke, D. Nitz, A. van Vliet, S. Petrera, L. Nellen, Denise Boncioli, Hernan Wahlberg, P. Abreu, Jeffrey Brack, Olaf Scholten, Mario Buscemi, Marc Weber, Humberto Ibarguen Salazar, R. M. de Almeida, D. Ravignani, J. Vicha, L. R. Wiencke, David Wittkowski, G. Salina, Danielle LaHurd, Olivier Deligny, Lorenzo Caccianiga, C. Morello, Jesús Peña-Rodríguez, E. M. Santos, Dusan Mandat, M. L. Díaz Castro, G. Farrar, R. Squartini, R. Lorek, Ugo Giaccari, Miguel Mostafa, J. Kleinfeller, Bruce R. Dawson, Francesca Zuccarello, B. Tome, P.O. Mazur, Rodrigo Pelayo, K. H. Kampert, Peter L. Biermann, Stijn Buitink, Valerio Verzi, Alfred Müller, A. Aab, Violet M. Harvey, D. Harari, C. M. Schäfer, Jose Chinellato, L. Bonneau Arbeletche, Paolo Privitera, Massimo Mastrodicasa, A. López Casado, Frank G. Schröder, Marcel Köpke, Max Malacari, M. Platino, Samo Stanič, R. Conceição, Miroslav Hrabovský, Julien Manshanden, Ioana Caracas, Kevin-Druis Merenda, A. Letessier-Selvon, Dariusz Gora, Andres Travaini, F. Guarino, John Matthews, Flavia Gesualdi, A. Haungs, J. Perez Armand, Matias Tueros, Alina Mihaela Badescu, Cristina Galea, B. L. Lago, Lorenzo Cazon, E. Varela, Peter Buchholz, J.D. Sanabria Gomez, A. Taboada, M. Prouza, P. Mantsch, G. Matthiae, Z. Szadkowski, A. Parra, R.J. Barreira Luz, Luis A. Nunez, Alan Coleman, Christian Sarmiento-Cano, Marco Aglietta, Marcus Niechciol, S. J. Saffi, G. Medina-Tanco, R. Halliday, P.F. Gómez Vitale, Alena Bakalova, Claudio Galelli, Thomas Hebbeker, Paula Gina Isar, S. Müller, Giovanni Marsella, D. Nosek, E. Santos, F. Riehn, A. Fuster, B. García, Sergio Dasso, Tristan Sudholz, S. Querchfeld, R. López, Karen S. Caballero-Mora, F. Pedreira, Marina Scornavacche, Martín Miguel Freire, Markus Roth, F. Salamida, A. Yushkov, J. Šupík, Carlo Ventura, Raul Sarmento, Jonathan Biteau, Felix Schlüter, Nicolás González, Fabian Gobbi, M. Schimp, G. P. Guedes, Martin Erdmann, Toshihiro Fujii, Ladislav Chytka, G. Cataldi, Antonio Bueno, A. Weindl, P. Ristori, J. de Jesús, B. C. Manning, V. Scherini, Jakub Juryšek, A. Streich, J. Debatin, D. Mockler, David Schmidt, A. Tapia, Gioacchino Alex Anastasi, M. Wirtz, P. Ruehl, Alexandra Saftoiu, A. Puyleart, Corinne Berat, M. Giller, Roger W Clay, G. Kukec Mezek, Steffen Hahn, Juan Carlos D'Olivo, T. Pierog, M. Trini, J. Hulsman, M. E. Bertaina, Esteban Roulet, Justin M. Albury, Francesco Fenu, Valerio Pirronello, H. Gemmeke, A. Menshikov, Denis Stanca, C. J. Todero Peixoto, Piera Luisa Ghia, Miroslav Pech, M. Pothast, Jeffrey A. Johnsen, M. Schimassek, C. Hojvat, Jan Ebr, Pavel Horvath, C. O. Escobar, A. Insolia, H. Wilczyński, Günter Sigl, M. Unger, M. Kleifges, D. Zavrtanik, A.D. Supanitsky, J. Pȩkala, B. Andrada, P. Stassi, A. Cancio, Sofia Andringa, Radomir Smida, A. Machado Payeras, Jacco Vink, V. de Souza, Gualberto Avila, P. Savina, H.O. Klages, M. I. Micheletti, M.P. Panetta, I. Allekotte, M. J. Roncoroni, A. A. Nucita, Ralf Ulrich, B. Vargas Cárdenas, T. Suomijärvi, J. Pallotta, John Farmer, Brian Fick, A. M. Botti, Maria-Teresa Dova, M. R. Hampel, Niraj Dhital, I. Valiño, L. Nožka, Jörg R. Hörandel, R.C. dos Anjos, M. Zavrtanik, Adriana Vásquez-Ramírez, M. Palatka, A. C. Fauth, Giovanni Consolati, Carla Bonifazi, Jose A. Bellido, Fabio Convenga, M. Urban, W. M. Namasaka, A. C. Rovero, Petr Schovanek, Alexandru Balaceanu, M. Suárez-Durán, Carla Aramo, Vincenzo Rizi, I.D. Vergara Quispe, Julien Souchard, D. Martello, M. Ziolkowski, O. Martínez Bravo, Silvia Mollerach, N. Fazzini, Jonas Glombitza, F. C. T. Barbato, J. Chudoba, Serguei Vorobiov, O. A. Taborda, Marcos Cerda, D. Lo Presti, S. J. De Jong, Jarryd A. Day, A.C. Cobos Cerutti, J. R. T. de Mello Neto, W. Rodrigues de Carvalho, Teresa Bister, G. Golup, Nataliia Borodai, K. Choi, Paul Sommers, A. Blanco, F. Sánchez, Antonio Condorelli, Christine Peters, A.L. Garcia Vegas, Luis A. Anchordoqui, Maria Rita Coluccia, Julian Kemp, Philipp Papenbreer, Petr Travnicek, Martina Bohacova, Trent D. Grubb, M. A. Muller, Hernán Asorey, Juan Manuel Figueira, Roberta Colalillo, Giovanni Mancarella, A. G. Mariazzi, Xavier Bertou, A. Zepeda, Juan Pablo Gongora, Pedro Assis, H. Martinez, G. Torralba Elipe, A. Etchegoyen, L. Valore, Alex Kääpä, Patricia María Hansen, Marco Giammarchi, V. Novotny, Octavian Sima, Rossella Caruso, A. Lucero, Fernando Catalani, G. De Mauro, Caterina Trimarelli, H. Schieler, Q. Dorosti, I. Lhenry-Yvon, Antonella Castellina, Vladimir Lenok, L. Perrone, Thomas Bretz, Corbin Covault, Lino Miramonti, D. de Oliveira Franco, Isabel Goos, D. Heck, M. del Río, M. Risse, Jonathan Blazek, Charles Timmermans, G. Parente, Fabrizia Canfora, L. Zehrer, J. de Oliveira, Alejandro Almela, Carla Bleve, Rodrigo Guedes Lang, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and Pierre Auger
Subjects: Physics and Astronomy (miscellaneous), air, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, UHE [cosmic radiation], Cosmic ray, 01 natural sciences, Auger, detector: fluorescence, Nuclear physics, 5/3, 0103 physical sciences, muon: density, ddc:530, cosmic radiation: UHE, 010306 general physics, Engineering (miscellaneous), Physics, Pierre Auger Observatory, fluorescence [detector], detector [muon], Muon, showers: atmosphere, hybrid, 010308 nuclear & particles physics, muon: detector, Astrophysics::Instrumentation and Methods for Astrophysics, observatory, Air shower, density [muon], 13. Climate action, Content (measure theory), High Energy Physics::Experiment, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Muon detector, atmosphere [showers]
Abstract: The hybrid design of the Pierre Auger Observatory allows for the measurement of the properties of extensive air showers initiated by ultra-high energy cosmic rays with unprecedented precision. By using an array of prototype underground muon detectors, we have performed the first direct measurement, by the Auger Collaboration, of the muon content of air showers between $$2\times 10^{17}$$2×1017 and $$2\times 10^{18}$$2×1018 eV. We have studied the energy evolution of the attenuation-corrected muon density, and compared it to predictions from air shower simulations. The observed densities are found to be larger than those predicted by models. We quantify this discrepancy by combining the measurements from the muon detector with those from the Auger fluorescence detector at $$10^{{17.5}}\, {\mathrm{eV}} $$1017.5eV and $$10^{{18}}\, {\mathrm{eV}} $$1018eV. We find that, for the models to explain the data, an increase in the muon density of $$38\%$$38%$$\pm 4\% (12\%)$$±4%(12%)$$\pm {}^{21\%}_{18\%}$$±18%21% for EPOS-LHC, and of $$50\% (53\%)$$50%(53%)$$\pm 4\% (13\%)$$±4%(13%)$$\pm {}^{23\%}_{20\%}$$±20%23% for QGSJetII-04, is respectively needed.
Published: 2020
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39. The Next-Generation Radio Neutrino Observatory — Multi-Messenger Neutrino Astrophysics at Extreme Energies

Author: Stijn Buitink, Nick van Eijndhoven, Krijn de Vries, Physics, Astronomy and Astrophysics Research Group, and Elementary Particle Physics
Subjects: Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Astrophysics::Instrumentation and Methods for Astrophysics, High Energy Physics::Experiment
Abstract: RNO is the mid-scale discovery instrument designed to make the first observation of neutrinos from the cosmos at extreme energies, with sensitivity well beyond current instrument capabilities. This new observatory will be the largest ground-based neutrino telescope to date, enabling the measurement of neutrinos above 10-1⁶ eV.
Published: 2019

40. Updated Calibration of the LOFAR Low-Band Antennas

Author: Heino Falcke, T.N.G. Trinh, Arthur Corstanje, Tobias Winchen, Pim Schellart, Brian Hare, Satyendra Thoudam, J. P. Rachen, Stijn Buitink, Katie Mulrey, S. ter Veen, Jörg R. Hörandel, Laura Rossetto, Anna Nelles, Olaf Scholten, Pragati Mitra, Antonio Bonardi, Astronomy and Astrophysics Research Group, Physics, and Faculty of Sciences and Bioengineering Sciences
Subjects: Physics, 010308 nuclear & particles physics, QC1-999, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, LOFAR, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Signal chain, Frequency spectrum, law.invention, Telescope, Air shower, law, 0103 physical sciences, Range (statistics), Calibration, 010306 general physics, Energy (signal processing), Remote sensing
Abstract: The LOw-Frequency ARray (LOFAR) telescope measures radio emission from air showers. In order to interpret the data, an absolute, frequency dependent calibration is required. Due to a growing need for a better understanding of the measured frequency spectrum, we revisit the calibration of the LOFAR antennas in the range of 30—80 MHz. Using the galactic radio emission and a detailed model of the LOFAR signal chain, we find a calibration that provides an absolute energy scale and allows us to study frequency dependent features in measured air shower signals.
Published: 2019

41. NuRadioMC - Simulation Code for the Next Generation of Radio Neutrino Detectors

Author: U. Latif, K. D. de Vries, J. C. Hanson, C. Pfender, Brian Clark, Abigail G. Vieregg, Jaime Alvarez-Muñiz, D. Seckel, D. Z. Besson, Stephanie Wissel, Yue Pan, Ilse Plaisier, J. Torres Espinosa, Christoph Welling, Amy Connolly, Cosmin Deaconu, Simona Toscano, C. Persichilli, R. Lahmann, Benjamin Hokanson-Fasig, Tobias Winchen, Stuart Kleinfelder, Daniel García-Fernández, Anna Nelles, N. van Eijndhoven, Stijn Buitink, S. W. Barwick, and Christian Glaser
Subjects: Physics, Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Signal, Universe, Computational physics, Software, Neutrino detector, Electric field, High Energy Physics::Experiment, Neutrino, business, media_common
Abstract: The detection of astrophysical neutrinos by IceCube has opened a new window for the observation of our universe. The use of antennas for detecting astroparticles has been proven useful and accurate after many years of radio cosmic-ray detections, and will be a valuable asset for increasing the statistics for the detection of neutrinos < 10 PeV and reaching out to the highest energies. The radio technique requires realistic and precise simulations of the electric field created after the neutrino interacts with the detector volume, how it propagates through media, and what measurable signal it produces in the detector. With the goal of providing accurate, fast simulations of neutrino-induced electric fields, we have created the NuRadioMC code. It builds on the experience of software used for current radio neutrino and cosmic ray experiments.
Published: 2019
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42. Investigation of Ultra-Luminous Infrared Galaxies as Obscured High-Energy Neutrino Source Candidates

Author: Stijn Buitink, Nick Van Eijndhoven, Pablo Correa, Krijn De Vries, Physics, Faculty of Sciences and Bioengineering Sciences, and Elementary Particle Physics
Subjects: Luminous infrared galaxy, Physics, Active galactic nucleus, Infrared, Star formation, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Flux, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Astrophysics::Galaxy Astrophysics, Fermi Gamma-ray Space Telescope
Abstract: Ultra-Luminous Infrared Galaxies (ULIRGs) are the most luminous objects in the infrared sky. With infrared luminosities exceeding $10^{12}$ solar luminosities, ULIRGs contain strong star formation regions which could power hadronic acceleration. Moreover, a significant fraction of ULIRGs have been found to host Active Galactic Nuclei, which could also be a source of hadronic acceleration. Furthermore, such high infrared luminosities indicate that large amounts of dust are present in these objects. In the presence of hadronic acceleration, this dust not only represents an excellent target for high-energy neutrino production through the \textit{pp}-channel, but it could also attenuate a significant fraction of the gamma rays that are produced in this process. This could relieve the apparent tension between the diffuse IceCube neutrino flux and the diffuse gamma-ray flux measured by \textit{Fermi}-LAT. We present our source selection criteria and IceCube sensitivities in view of a search for high-energy neutrinos from these so far unexplored objects.
Published: 2019
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43. Generation of Seed Electrons by Extensive Air Showers, and the Lightning Inception Problem Including Narrow Bipolar Events

Author: Ute Ebert, Thi Ngoc Gia Trinh, Stijn Buitink, Olaf Scholten, Casper Rutjes, Physics, Elementary Particle Physics, and Elementary Processes in Gas Discharges
Subjects: Free electron model, Atmospheric Science, 010504 meteorology & atmospheric sciences, Soil Science, Electron, electron seed, Aquatic Science, 01 natural sciences, Atmosphere, Geochemistry and Petrology, Electric field, Thermal, Earth and Planetary Sciences (miscellaneous), lightning inception, oceanography, 0105 earth and related environmental sciences, Water Science and Technology, Earth-Surface Processes, Physics, geophysics, Palaeontology, Forestry, Radius, Lightning, Computational physics, thundercloud, Air shower, Space and Planetary Science, hydrometeors, ecology, lightning
Abstract: Lightning streamers and leaders need thermal electrons to initiate, but free electrons are extremely rare in the wet air of a thundercloud. Here we analyze the probabilities that high electron densities occur in extensive air showers. We argue that relevant air showers are created by cosmic particles with energies between 1015 and 1017 eV impinging onto our atmosphere. We simulate a large number of air showers and perform a stochastic analysis of their results. We present the available densities of thermal electrons as a function of altitude, time interval, and considered area, while neglecting effects of local electric fields. We find that free electron densities at altitudes between 5 and 13 km can reach values of order 103 cm−3, but only in shower cores with a radius on a centimeter scale. Above 6 km, the availability of extreme free electron densities decreases significantly with increasing altitude. Recent measurements by Rison et al. (2016, https://doi.org/10.1038/ncomms10721) indicate that several streamers must have been triggered simultaneously during discharge inception, and we suggest that an extensive air shower could have been the trigger. Rison's measurements show further that the streamers are laterally separated by several tens of meters, so they must have been triggered by electron densities as low as 1 cm−3. Such low electron densities demand a stochastic approach to streamer initiation near hydrometeors.
Published: 2019

44. Observations outside Radio Astronomy

Author: Olaf Scholten, Jose Bacelar, Stijn Buitink, Heino Falcke, Hans van der Marel, Roland Klees, Arnold van Ardenne, Maaike Mevius, Mark Bentum, Koos Kegel, and Andre Bos
Subjects: Radio telescope, symbols.namesake, Galileo (satellite navigation), symbols, Astronomy, Mars Exploration Program, LOFAR, Space weather, Ionosphere, Geology, Radio astronomy
Abstract: Observations outside Radio Astronomy Chapter 17.1: - The NuMoon experiment at the WSRT Chapter 17.2: - Geodesy and Gravity at the WSRT Chapter 17.3: - Ionosphere, the WSRT, LOFAR and Space Weather - The search for NASA’s Mars Polar Lander Chapter 17.4: - A Westerbork Radio Telescope for Galileo Monitoring - Discovery of Heaven in Westerbork
Published: 2019
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45. Cosmic Ray Physics with the LOFAR Radio Telescope

Author: Tobias Winchen, Anna Nelles, Katharine Mulrey, Jörg R. Hörandel, Heino Falcke, T. N. G. Trinh, Stijn Buitink, Brian Hare, Pragati Mitra, Arthur Corstanje, Jörg P. Rachen, Satyendra Thoudam, S. ter Veen, Laura Rossetto, Pim Schellart, A. Bonardi, Olaf Scholten, Physics, Astronomy and Astrophysics Research Group, Faculty of Sciences and Bioengineering Sciences, Elementary Particle Physics, and Faculty of Economic and Social Sciences and Solvay Business School
Subjects: History, Precision testing, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Measure (physics), FOS: Physical sciences, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Education, Radio telescope, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Astroparticle physics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, LOFAR, Computer Science Applications, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract: The LOFAR radio telescope is able to measure the radio emission from cosmic ray induced air showers with hundreds of individual antennas. This allows for precision testing of the emission mechanisms for the radio signal as well as determination of the depth of shower maximum $X_{\max}$, the shower observable most sensitive to the mass of the primary cosmic ray, to better than 20 g/cm$^2$. With a densely instrumented circular area of roughly 320 m$^2$, LOFAR is targeting for cosmic ray astrophysics in the energy range $10^{16}$ - $10^{18}$ eV. In this contribution we give an overview of the status, recent results, and future plans of cosmic ray detection with the LOFAR radio telescope., Comment: Proceedings of the 26th Extended European Cosmic Ray Symposium (ECRS), Barnaul/Belokurikha, 2018
Published: 2019
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46. A large light-mass component of cosmic rays at 10(17)-10(17.5) electronvolts from radio observations

Author: Vishambhar Pandey, D. D. Mulcahy, M. A. Garrett, J. van Leeuwen, Tim Hassall, Adam Deller, Harvey Butcher, D. Engels, H. Paas, John Conway, J. E. Enriquez, A. I. F. Stewart, M. Pandey-Pommier, Matthias Steinmetz, Rob Fender, B. Ciardi, M. Pietka, E. Juette, G. van Diepen, P. N. Best, M. C. Toribio, A. Horneffer, Chiara Ferrari, M. P. van Haarlem, S. Duscha, Mark J. Bentum, Stefan J. Wijnholds, Jochen Eislöffel, Sarod Yatawatta, Emanuela Orrú, M. Kuniyoshi, Michael Kramer, Anna Nelles, C. Vogt, R. J. van Weeren, Martin Bell, Maaijke Mevius, John D. Swinbank, P. Maat, Matthias Hoeft, M. J. Norden, Pim Schellart, D. McKay-Bukowski, J. A. Zensus, John McKean, Dominik J. Schwarz, Richard Fallows, Aris Karastergiou, Ph. Zarka, V. I. Kondratiev, T. N. G. Trinh, Stijn Buitink, Heino Falcke, Michael W. Wise, Jörg P. Rachen, Benjamin Stappers, Jason W. T. Hessels, J. Sluman, Gianni Bernardi, Jörg R. Hörandel, I. M. Avruch, James M. Anderson, F. de Gasperin, Frank Breitling, Roberto Pizzo, H. J. A. Röttgering, Satyendra Thoudam, G. Kuper, Olaf Wucknitz, M. Serylak, H. Munk, Wilfred Frieswijk, Ashish Asgekar, Marcus Brüggen, M. Iacobelli, Y. Tang, W. Reich, S. ter Veen, A. W. Gunst, Anna M. M. Scaife, Laura Rossetto, Ralph A. M. J. Wijers, A. G. Polatidis, Rebecca McFadden, Arthur Corstanje, Annalisa Bonafede, Christian Vocks, G. M. Loose, Sera Markoff, Jean-Mathias Grießmeier, Michel Tagger, D. Carbone, R. C. Vermeulen, T. Huege, Olaf Scholten, Oleg Smirnov, Huib Intema, Cyril Tasse, J. W. Broderick, E. de Geus, R. J. Dettmar, George Heald, W. N. Brouw, Gottfried Mann, High Energy Astrophys. & Astropart. Phys (API, FNWI), Radboud University [Nijmegen], Netherlands Institute for Radio Astronomy (ASTRON), Karlsruhe Institute of Technology (KIT), University of Groningen [Groningen], Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Laboratoire Analyse, Géométrie et Applications (LAGA), Université Paris 8 Vincennes-Saint-Denis (UP8)-Université Paris 13 (UP13)-Institut Galilée-Centre National de la Recherche Scientifique (CNRS), Institute for Mathematics Applied to Geoscience, National Center for Atmospheric Research [Boulder] (NCAR), SRON Netherlands Institute for Space Research (SRON), Australia Telescope National Facility (ATNF), Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), University of Edinburgh, Jacobs University [Bremen], Leibniz-Institut für Astrophysik Potsdam (AIP), University of Southampton, Kapteyn Astronomical Institute [Groningen], University of Amsterdam [Amsterdam] (UvA), Max Planck Institute for Astrophysics, Max-Planck-Gesellschaft, Onsala Space Observatory, Dept. of Radio and Space Science, Chalmers University of Technology, Chalmers University of Technology [Göteborg], Hamburger Sternwarte/Hamburg Observatory, Universität Hamburg (UHH), Medstar Research Institute, Astronomisches Institut der Ruhr-Universität Bochum, Ruhr-Universität Bochum [Bochum], Thüringer Landessternwarte Tautenburg (TLS), SETI Institute, Institute of Mathematical and Physical Sciences, Département de Géologie, Université de Montréal (UdeM), Leiden Observatory [Leiden], Universiteit Leiden, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Jodrell Bank Centre for Astrophysics, University of Manchester [Manchester], Max-Planck-Institut für Radioastronomie (MPIFR), Oxford Astrophysics, University of Oxford, Columbia Astrophysics Laboratory (CAL), Columbia University [New York], Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Oulu, Center for Information Technology CIT, Université de Groningen, Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), National Radio Astronomy Observatory [Charlottesville] (NRAO), National Radio Astronomy Observatory (NRAO), School of Physics and Astronomy [Southampton], Interactions Son Musique Mouvement, Sciences et Technologies de la Musique et du Son (STMS), Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Rhodes University, Grahamstown, Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH / Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures (DSMZ), Laboratory for Atmospheric and Space Physics [Boulder] (LASP), University of Colorado [Boulder], Université Paris-Sud - Paris 11 (UP11), SKA South Africa, Ska South Africa, Galaxies, Etoiles, Physique, Instrumentation (GEPI), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Finca El Encin, Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario (IMIDRA), Argelander-Institut für Astronomie (AlfA), Rheinische Friedrich-Wilhelms-Universität Bonn, Observatoire de Paris - Site de Paris (OP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, European Project: 227610,EC:FP7:ERC,ERC-2008-AdG,LOFAR-AUGER(2009), European Project: 640130,H2020,ERC-2014-STG,LOFAR(2015), Radboud university [Nijmegen], Institute for Nuclear Physics (IKP), Karlsruhe Institute of Technology, nstitute for Nuclear Physics (IKP), Karlsruhe Institute of Technology, Université Paris 8 Vincennes-Saint-Denis (UP8)-Centre National de la Recherche Scientifique (CNRS)-Institut Galilée-Université Paris 13 (UP13), Universiteit Leiden [Leiden], Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), University of Oxford [Oxford], École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Research unit Astroparticle Physics, Astronomy, and Kapteyn Astronomical Institute
Subjects: TELESCOPE, High-energy astronomy, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Astrophysics, Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, Radiation, EXTENSIVE AIR-SHOWERS, 01 natural sciences, 0103 physical sciences, 010303 astronomy & astrophysics, Astroparticle physics, Physics, Multidisciplinary, COSMIC cancer database, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, LOFAR, ENERGY-SPECTRUM, SIMULATIONS, PULSES, High-energy astrophysics, Air shower, 13. Climate action, [SDU]Sciences of the Universe [physics], ARRAY, Neutrino, Particle astrophysics, EMISSION
Abstract: Cosmic rays are the highest-energy particles found in nature. Measurements of the mass composition of cosmic rays with energies of 1017–1018 electronvolts are essential to understanding whether they have galactic or extragalactic sources. It has also been proposed that the astrophysical neutrino signal1 comes from accelerators capable of producing cosmic rays of these energies2. Cosmic rays initiate air showers—cascades of secondary particles in the atmosphere—and their masses can be inferred from measurements of the atmospheric depth of the shower maximum3 (Xmax; the depth of the air shower when it contains the most particles) or of the composition of shower particles reaching the ground4. Current measurements5 have either high uncertainty, or a low duty cycle and a high energy threshold. Radio detection of cosmic rays6,7,8 is a rapidly developing technique9 for determining Xmax (refs 10, 11) with a duty cycle of, in principle, nearly 100 per cent. The radiation is generated by the separation of relativistic electrons and positrons in the geomagnetic field and a negative charge excess in the shower front6,12. Here we report radio measurements of Xmax with a mean uncertainty of 16 grams per square centimetre for air showers initiated by cosmic rays with energies of 1017–1017.5 electronvolts. This high resolution in Xmax enables us to determine the mass spectrum of the cosmic rays: we find a mixed composition, with a light-mass fraction (protons and helium nuclei) of about 80 per cent. Unless, contrary to current expectations, the extragalactic component of cosmic rays contributes substantially to the total flux below 1017.5 electronvolts, our measurements indicate the existence of an additional galactic component, to account for the light composition that we measured in the 1017–1017.5 electronvolt range.
Published: 2019
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47. Cosmic Ray Mass Measurements with LOFAR

Author: Anna Nelles, Antonio Bonardi, Laura Rossetto, Olaf Scholten, Satyendra Thoudam, Pragati Mitra, Tobias Winchen, Sander ter Veen, Jörg P. Rachen, Jörg R. Hörandel, Heino Falcke, Stijn Buitink, Katie Mulrey, Arthur Corstanje, Pim Schellart, Gia Trinh, J. Emilio Enriquez, Research unit Astroparticle Physics, Physics, Astronomy and Astrophysics Research Group, and Faculty of Sciences and Bioengineering Sciences
Subjects: Physics, Range (particle radiation), 010308 nuclear & particles physics, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, LOFAR, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Physics and Astronomy(all), 01 natural sciences, law.invention, law, 0103 physical sciences, Dipole antenna, Mass analysis, Particle density, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), 010303 astronomy & astrophysics, Energy (signal processing), Dense core
Abstract: In the dense core of LOFAR individual air showers are detected by hundreds of dipole antennas simultaneously. We reconstruct X max by using a hybrid technique that combines a two-dimensional fit of the radio profile to CoREAS simulations and a one-dimensional fit of the particle density distribution. For high-quality detections, the statistical uncertainty on X max is smaller than 20 g/cm 2 . We present results of cosmic-ray mass analysis in the energy regime of 10 17 - 10 17.5 eV. This range is of particular interest as it may harbor the transition from a Galactic to an extragalactic origin of cosmic rays.
Published: 2017

48. TEC, Trigger and Check, preparing LOFAR for Lunar observations

Author: Jörg P. Rachen, Pim Schellart, Jörg R. Hörandel, Sander ter Veen, Olaf Scholten, Laura Rossetto, Katey Mulrey, Heino Falcke, J. Emilio Enriquez, Antonio Bonardi, Satyendra Thoudam, Gia Trinh, Anna Nelles, Stijn Buitink, Pragati Mitra, Tobias Winchen, Arthur Corstanje, Maaijke Mevius, Physics, Astronomy and Astrophysics Research Group, Faculty of Sciences and Bioengineering Sciences, and Research unit Astroparticle Physics
Subjects: Physics, Total electron content, 010308 nuclear & particles physics, Aperture, QC1-999, TEC, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, LOFAR, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Low frequency, Physics and Astronomy(all), 01 natural sciences, Radio telescope, 0103 physical sciences, Neutrino, 010303 astronomy & astrophysics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries)
Abstract: One of the main ways to use radio to detect Ultra High Energy Neutrinos and Cosmic Rays is the Lunar Askaryan technique, that uses the Moon as a target and searches for nanosecond pulses with large radio telescopes. To use low frequency aperture arrays, such as LOFAR and the SKA, pose new challenges and possibilities in detection techniques of short radio pulses and to measure the Total Electron Content (TEC). As a prepatory work, we have used other measurements that use similar techniques, or that can answer a specific question, with the LOFAR radio telescope. This contribution reports on our work on triggering on short radio signals, post-event imaging of radio signals from buffered data and methods to determine the TEC-value.
Published: 2017
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49. Towards real-time identification of cosmic rays with LOw-Frequency ARray radio antennas

Author: Arthur Corstanje, Jörg P. Rachen, Jörg R. Hörandel, Olaf Scholten, Heino Falcke, Antonio Bonardi, Anna Nelles, Pragati Mitra, Pim Schellart, Satyendra Thoudam, Gia Trinh, Tobias Winchen, J. Emilio Enriquez, Sander ter Veen, Stijn Buitink, Katie Mulrey, Laura Rossetto, Research unit Astroparticle Physics, Physics, Astronomy and Astrophysics Research Group, and Faculty of Sciences and Bioengineering Sciences
Subjects: Astronomy, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Physics and Astronomy(all), Radiation, Low frequency, 01 natural sciences, Atmosphere, Background noise, 0103 physical sciences, 010303 astronomy & astrophysics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Remote sensing, Physics, 010308 nuclear & particles physics, business.industry, Electrical engineering, Astrophysics::Instrumentation and Methods for Astrophysics, LOFAR, Identification (information), Experimental High Energy Physics, Antenna (radio), business
Abstract: Cosmic rays entering the Earth's atmosphere produce Extensive Air Showers, which emit a radio signal through Geo-magnetic radiation and Askaryan emission. At the present time, one of the biggest challenges for assessing the Radio detection as a valuable technique for Cosmic-ray observation is to identify in real-time the very short (less than 100 ns) radio signals over the background noise. In this work, we present the latest updates on the real-time identification of radio signals from Extensive Air Showers by using the data from LOFAR Low Band Antenna stations, which are sensitive in the 30-80 MHz region.
Published: 2017
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50. The mass composition of cosmic rays measured with LOFAR

Author: Pim Schellart, Stijn Buitink, Katie Mulrey, Anna Nelles, Satyendra Thoudam, Tobias Winchen, Heino Falcke, Arthur Corstanje, T. N. G. Trinh, Jörg P. Rachen, S. ter Veen, Jörg R. Hörandel, Laura Rossetto, Olaf Scholten, Antonio Bonardi, Pragati Mitra, and Research unit Astroparticle Physics
Subjects: Physics::Instrumentation and Detectors, Astronomy, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Electron, Astrophysics, 01 natural sciences, law.invention, Atmosphere, law, 0103 physical sciences, Ultra-high-energy cosmic ray, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), 010303 astronomy & astrophysics, Physics::Atmospheric and Oceanic Physics, Astroparticle physics, Physics, PAMELA detector, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, LOFAR, Air shower, High Energy Physics::Experiment
Abstract: High-energy cosmic rays, impinging on the atmosphere of the Earth initiate cascades of secondary particles, the extensive air showers. The electrons and positrons in the air shower emit electromagnetic radiation. This emission is detected with the LOFAR radio telescope in the frequency range from 30 to 240 MHz. The data are used to determine the properties of the incoming cosmic rays. The radio technique is now routinely used to measure the arrival direction, the energy, and the particle type (atomic mass) of cosmic rays in the energy range from 1017 to 1018 eV. This energy region is of particular astrophysical interest, since in this regime a transition from a Galactic to an extra-galactic origin of cosmic rays is expected. For illustration, the LOFAR results are used to set constraints on models to describe the origin of high-energy cosmic rays.
Published: 2017

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