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2. 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

3. Calculation of rescaling factors and nuclear multiplication of muons in extensive air showers

Author

Kevin Almeida Cheminant, Dariusz Góra, Nataliia Borodai, Ralph Engel, Tanguy Pierog, Jan Pȩkala, Markus Roth, Michael Unger, Darko Veberič, and Henryk Wilczyński

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, FOS: Physical sciences, ddc:530, Condensed Matter Physics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Mathematical Physics, Atomic and Molecular Physics, and Optics
Abstract

Recent results obtained from leading cosmic ray experiments indicate that simulations using LHC-tuned hadronic interaction models underestimate the number of muons in extensive air showers compared to experimental data. This is the so-called muon deficit problem. Determination of the muon component in the air shower is crucial for inferring the mass of the primary particle, which is a key ingredient in the efforts to pinpoint the sources of ultra-high energy cosmic rays.In this paper, we present a new method to derive the muon signal in detectors, which uses the difference between the total reconstructed (data) and simulated signals is roughly independent of the zenith angle, but depends on the mass of the primary cosmic ray. Such a method offers an opportunity not only to test/calibrate the hadronic interaction models, but also to derive the $\beta$ exponent, which describes an increase of the number of muons in a shower as a function of the energy and mass of the primary cosmic ray. Detailed simulations show a dependence of the $\beta$ exponent on hadronic interaction properties, thus the determination of this parameter is important for understanding the muon deficit problem. We validate the method by using Monte Carlo simulations for the EPOS-LHC and QGSJetII-04 hadronic interaction models, and showing that this method allows us to recover the ratio of the muon signal between EPOS-LHC and QGSJetII-04 and the average $\beta$ exponent for the studied system, within less than a few percent. This is a consequence of the good recovery of the muon signal for each primary included in the analysis., Comment: This work corresponds to the presentation at the ICNFP 2022 at Kolymbari, Crete, in September 2022. The proceedings will be published in Physica Scripta. arXiv admin note: text overlap with arXiv:2108.07527

Published
2022

4. Muon number rescaling in simulations of air showers

Author

Nataliia Borodai, M. Roth, Jaroslaw Stasielak, Tanguy Pierog, Michael Unger, Darko Veberič, Jan Pękala, Dariusz Gora, Henryk Wilczyński, and Ralph Engel

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Pierre Auger Observatory, Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Monte Carlo method, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Cosmic ray, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), ddc:530, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Parametrization, Event (particle physics), Zenith
Abstract

The number of muons in extensive air showers predicted using LHC-tuned hadronic interaction models, such as EPOS-LHC and QGSJetII-04, is smaller than observed in showers recorded by leading cosmic ray experiments. In this paper, we present a new method to derive muon rescaling factors by analyzing reconstructions of simulated showers. The z-variable used (difference of initially simulated and reconstructed total signal in detectors) is connected to the muon signal and is roughly independent of the zenith angle but depends on the mass of primary cosmic ray. The performance of the method is tested using Monte Carlo shower simulations for the hybrid detector of the Pierre Auger Observatory. Having an individual z-value from each simulated hybrid event, the corresponding signal at 1000 m from the shower axis, and using a parametrization of the muon fraction in simulated showers, we can calculate the multiplicative rescaling parameters of the muon signals in the ground detector even for an individual event. We can also study its dependence as a function of zenith angle and the mass of primary cosmic ray. This gives a possibility not only to test/calibrate the hadronic interaction models, but also to derive the $\beta$-exponent, describing an increase of the number of muons as a function of primary energy and mass of the cosmic ray. Detailed simulations show dependence of the $\beta$-exponent on hadronic interaction properties, thus the determination of this parameter is important for understanding the muon deficit problem., Comment: Proceedings of 37th International Cosmic Ray Conference (ICRC 2021), July 12th -- 23rd, 2021

Published
2021

5. 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

6. 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

7. Simulation of ultra-high energy photon propagation with PRESHOWER 2.0

Author

Ralph Engel, Agata Pysz, Henryk Wilczyński, and Piotr Homola

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Photon, Large Hadron Collider, Fortran, Monte Carlo method, Bremsstrahlung, FOS: Physical sciences, General Physics and Astronomy, CPU time, Tracking (particle physics), Computational physics, Pair production, Hardware and Architecture, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics (astro-ph.IM), computer, Simulation, computer.programming_language
Abstract

In this paper we describe a new release of the PRESHOWER program, a tool for Monte Carlo simulation of propagation of ultra-high energy photons in the magnetic field of the Earth. The PRESHOWER program is designed to calculate magnetic pair production and bremsstrahlung and should be used together with other programs to simulate extensive air showers induced by photons. The main new features of the PRESHOWER code include a much faster algorithm applied in the procedures of simulating the processes of gamma conversion and bremsstrahlung, update of the geomagnetic field model, and a minor correction. The new simulation procedure increases the flexibility of the code so that it can also be applied to other magnetic field configurations such as, for example, encountered in the vicinity of the sun or neutron stars., 22 pages, 6 figures

Published
2013

8. Evidence for a mixed mass composition at the 'ankle' in the cosmic-ray spectrum

Author

S. Stanič, Denis Stanca, J. A.J. Matthews, Xavier Bertou, M. L. Díaz Castro, C. Porowski, Jakub Vicha, Francesca Zuccarello, Pedro Assis, R. Sato, Jose Chinellato, I. Jandt, Hermann-Josef Mathes, M. Ziolkowski, Denise Boncioli, Markus Risse, Muller, F. Canfora, J. Blazek, A. Tonachini, Antonio Bueno, M. Josebachuili, J.D. Sanabria Gomez, Eric Mayotte, A. C. Rovero, J. Biteau, P.F. Gómez Vitale, G. A. Anastasi, Kai Daumiller, Alberto Filevich, Peter Hansen, John Matthews, Christian Sarmiento-Cano, Gualberto Avila, W. Rodrigues de Carvalho, Marco Torri, Nicolás González, M. Gómez Berisso, R. C. Shellard, Leigui de Oliveira, Paul M. Mantsch, Diego Ravignani, J. R. Vázquez, P. Sanchez-Lucas, S. Vorobiov, Ingomar Allekotte, F. Sánchez, J. W. Cronin, Lorenzo Cazon, Peter Buchholz, R. Piegaia, I. Al Samarai, Ivo Nicolas Naranjo, Antonio Insolia, A. Aab, L. Caramete, Alina Mihaela Badescu, P. Heimann, Anderson Fauth, M. Zavrtanik, G. Marsella, R. Ramos-Pollant, Valerio Pirronello, G. Torralba Elipe, O. Ravel, P. van Bodegom, Angela V. Olinto, C. Di Giulio, S. Navas, I.M. Brancus, H. Glass, Marco Aglietta, Johannes Schumacher, Joshua A. Gordon, Bruno Daniel, Corinne Berat, R. Krause, Gaia Silli, A. Filipčič, Foteini Oikonomou, G. S. Varner, Alessio Gorgi, Fred Sarazin, H. Gemmeke, Lukas Nellen, M. I. Micheletti, L. A. S. Pereira, Maria Giller, J. J. Masías Meza, C. J. Todero Peixoto, A.E. Herve, Octavian Sima, Nataliia Borodai, D. Mockler, Manuel Platino, E.M. Holt, B. Wundheiler, A. Fuster, Q. Hasankiadeh, A. Saleh, Jeffrey Brack, J. F. Valdés Galicia, Olaf Scholten, Ioana Codrina Maris, I. De Mitri, Dieter Heck, Martin Urban, Hans Klages, H. Nožka, A. Chiavassa, Maria-Teresa Dova, M. R. Hampel, O. A. Taborda, Carlos Hojvat, Miroslav Palatka, A. Menshikov, Diego Harari, B. Gookin, S. Müller, Carola Dobrigkeit, M. Schauer, Humberto Ibarguen Salazar, Ricardo Vázquez, Antoine Letessier-Selvon, Ernesto Kemp, R. Legumina, P. H. Nguyen, Lawrence Wiencke, B. Sarkar, Sarka Wykes, C. Morello, E. M. Santos, G. Kukec Mezek, L. Molina-Bueno, M. Plum, Z. Zong, David Walz, Harald Schieler, O. Kambeitz, Jeffrey A. Johnsen, Sven Querchfeld, L. Perrone, Marco Giammarchi, Bruce R. Dawson, S. Quinn, Christian Glaser, J. Espadanal, Octavian Fratu, M. E. Bertaina, Alan Watson, Mihai Niculescu-Oglinzanu, Jonny Kleinfeller, Sergio Sciutto, L. Ochilo, M. Mallamaci, Alberto Segreto, Nicusor Arsene, D. Rogozin, J. de Oliveira, R.R. Prado, Alejandro Almela, P. Billoir, Tim Huege, Ana Martina Botti, Belén Andrada, J. Alvarez Castillo, G. C. Hill, R.C. dos Anjos, Lukas Middendorf, D. Pakk Selmi-Dei, F. Diogo, G. De Mauro, Henryk Wilczyński, Ralph Engel, J. J. Beatty, Norbert Kunka, D. Nitz, Günter Sigl, Silvia Mollerach, A. Śmiałkowski, Jörg R. Hörandel, Sutherland, Julian Rautenberg, Peter L. Biermann, F. Montanet, L. Niemietz, R. M. de Almeida, L. Tomankova, Christine Peters, Radomir Smida, Alberto Etchegoyen, John L. Harton, Peter Gorham, T. Paul, Paolo Privitera, Federico Suarez, A. Schulz, D. Reinert, A. López Casado, G. Matthiae, Andreas Weindl, D. Garcia-Pinto, Paul Sommers, Petr Schovanek, A. Di Matteo, Charles Timmermans, Luis A. Nunez, A. Blanco, P. Gouffon, N. Krohm, D. Torres Machado, L. Collica, P. Abreu, Brian Fick, Zbigniew Szadkowski, Alberto Daniel Supanitsky, D. Melo, Julien Aublin, A. Shadkam, M. J. Cooper, Miguel Mostafá, Mário Pimenta, Gregory R Snow, Pablo Ristori, Miroslav Pech, P. H. Kasper, Carlos Medina, M. Settimo, R. Ulrich, Rodrigo Pelayo, Stijn Buitink, E. Varela, D. Yelos, Andrej Dundovic, Marcus Niechciol, D. Martello, Luis A. Anchordoqui, Pavel Horvath, Danilo Zavrtanik, Lorenzo Caccianiga, V. M. Theodoro, Paula Gina Isar, F. Salesa Greus, G. Cataldi, Florian Gaté, Michael Unger, S. Jansen, Gero Müller, P. W. Younk, Sofia Andringa, Eun-Joo Ahn, P. Lautridou, C. Scarso, Elton J. G. Santos, Jiri Chudoba, Markus Roth, G. van Aar, Dusan Mandat, Q. Luce, V. de Souza, Alex Kääpä, Maria Rita Coluccia, A. van Vliet, Tanguy Pierog, R. Cester, Gustavo Medina-Tanco, Miroslav Hrabovský, L. del Peral, Jaroslaw Stasielak, Andreas Haungs, Matthias Kleifges, V. Verzi, Philipp Papenbreer, Colin Baus, Glennys R. Farrar, David Schmidt, J. Sorokin, K. H. Becker, H. Martinez, A. G. Mariazzi, A. Kuotb Awad, S. G. Blaess, C. Aramo, Sergio Dasso, Tristan Sudholz, Fausto Guarino, Juan Pallotta, R. López, B. Tome, C. Bleve, Alexandru Balaceanu, Petr Travnicek, Rodríguez-Frías, V. Scherini, Arnulfo Zepeda, Eduardo Quel, David Wittkowski, Laura Valore, Martín Miguel Freire, Thomas Harrison, Benoît Revenu, Germano Guedes, Danielle LaHurd, Olivier Deligny, P. Pieroni, Alan Coleman, T. Hebbeker, Vincenzo Rizi, Trent D. Grubb, G. Rodriguez Fernandez, Benedikt Zimmermann, Rúben Conceição, Toshihiro Fujii, M. Ambrosio, L. Lopes, J. Debatin, O. Martínez Bravo, Dariusz Glas, Juan Manuel Figueira, F. Arqueros, Alexandra Saftoiu, Tim Niggemann, Roberta Colalillo, J. Hulsman, B. Mitrica, Hernán Asorey, Francesco Strafella, Martina Bohacova, Patrick Allison, Heino Falcke, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, I. Lhenry-Yvon, A. Lucero, Juan Carlos D'Olivo, O. Wainberg, A. Valbuena-Delgado, Esteban Roulet, T. Suomijärvi, Karl-Heinz Kampert, Antonella Castellina, Piera Luisa Ghia, V. Novotny, Rossella Caruso, S. Mathys, M. Erfani, John Swain, Thomas Bretz, Ruben Squartini, I. A. Minaya, Corbin Covault, Peter Mazur, J. Pȩkala, Geraldina Golup, Alexander Grillo, S. J. De Jong, Katrin Link, Lino Miramonti, Ugo Giaccari, A. Tepe, J. R. T. de Mello Neto, M. Prouza, J. Rodriguez Rojo, Bianca Keilhauer, A. G. Chavez, F.G. Schröder, Enrique Zas, Fernando Contreras, Jesús Peña-Rodríguez, A. Dorofeev, L. Villaseñor, A. Bridgeman, S. J. Saffi, Markus Lauscher, F. Pedreira, J. Phuntsok, Raul Sarmento, M. Suarez Durán, H. Wahlberg, A. Parra, G. Parente, M. Trini, Johannes Schulz, Florian Lukas Briechle, A. Cancio, B. Caccianiga, Alexey Yushkov, Max Malacari, Lili Yang, Luca Latronico, Piotr Homola, Alex Tapia, Tobias Winchen, P. Lebrun, Karen S. Caballero-Mora, Martin Erdmann, Carla Bonifazi, Beatriz García, Roger W Clay, Stefano D'Amico, Jose A. Bellido, Daniel Kuempel, S. Sonntag, Carlos Escobar, Jaime Rosado, R.M. Kieckhafer, B. Vargas Cárdenas, I. Valiño, J. Neuser, Ivone F. M. Albuquerque, Ke Fang, I. Katkov, Richard Dallier, Gaetano Salina, A.M. van den Berg, Darko Veberič, Jan Ridky, Marc Weber, M. Buscemi, D. Nosek, Jan Ebr, Sergio Petrera, S. Messina, S. Coutu, Norberto Fazzini, Aab, A., Abreu, P., Aglietta, M., Ahn, E. J., Al Samarai, I., Albuquerque, I. F. M., Allekotte, I., Allison, P., Almela, A., Alvarez Castillo, J., Alvarez Muñiz, J., Ambrosio, M., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Avila, G., Badescu, A. 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A., Weber, M., Weindl, A., Wiencke, L., Wilczyński, H., Winchen, T., Wittkowski, D., Wundheiler, B., Wykes, S., Yang, L., Yelos, D., Younk, P., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zepeda, A., Zimmermann, B., Ziolkowski, M., Zong, Z., Zuccarello, F., Bleve, C., Colalillo, Roberta, Coluccia, M. R., D'Amico, S., De Mitri, I., Guarino, Fausto, Marsella, G., Martello, D., Pȩkala, J., Perrone, L., Scherini, V., Settimo, M., Strafella, F., Valore, Laura, Physics, Astronomy and Astrophysics Research Group, Elementary Particle Physics, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and Pierre Auger Collaboration

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Nuclear and High Energy Physics, Proton, Pierre Auger Observatory, Cosmic Rays, Mass Composition, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Flux, FOS: Physical sciences, Cosmic ray, Ankle, Cosmic rays, Mass composition, Astrophysics, 01 natural sciences, Auger, Observatory, 0103 physical sciences, ddc:530, High Energy Physics, 010303 astronomy & astrophysics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Cherenkov radiation, Ciencias Exactas, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Range (particle radiation), 010308 nuclear & particles physics, OBSERVATÓRIOS, Astrophysics::Instrumentation and Methods for Astrophysics, Física, lcsh:QC1-999, Physique atomique et nucléaire, Experimental High Energy Physics, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, lcsh:Physics
Abstract

We report a first measurement for ultrahigh energy cosmic rays of the correlation between the depth of shower maximum and the signal in the water Cherenkov stations of air-showers registered simultaneously by the fluorescence and the surface detectors of the Pierre Auger Observatory. Such a correlation measurement is a unique feature of a hybrid air-shower observatory with sensitivity to both the electromagnetic and muonic components. It allows an accurate determination of the spread of primary masses in the cosmic-ray flux. Up till now, constraints on the spread of primary masses have been dominated by systematic uncertainties. The present correlation measurement is not affected by systematics in the measurement of the depth of shower maximum or the signal in the water Cherenkov stations. The analysis relies on general characteristics of air showers and is thus robust also with respect to uncertainties in hadronic event generators. The observed correlation in the energy range around the ‘ankle’ at lg⁡(E/eV)=18.5–19.0 differs significantly from expectations for pure primary cosmic-ray compositions. A light composition made up of proton and helium only is equally inconsistent with observations. The data are explained well by a mixed composition including nuclei with mass A>4. Scenarios such as the proton dip model, with almost pure compositions, are thus disfavored as the sole explanation of the ultrahigh-energy cosmic-ray flux at Earth., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2016

9. Energy estimation of cosmic rays with the Engineering Radio Array of the Pierre Auger Observatory

Author

Pierre Auger Collaboration (Alexander Aab (Siegen, U. )., Pedro Abreu (LIP, Lisbon &amp, Lisbon, IST), Marco Aglietta (IFSI, Turin), Eun-Joo Ahn (Fermilab), Imen Al Samarai (Orsay, IPN), Ivone Albuquerque (Sao Paulo, U. )., Ingomar Allekotte (Centro Atomico Bariloche &amp, Balseiro, Inst., San Carlos de Bariloche), Patrick Allison (Ohio State, U. )., Alejandro Almela, (U. Tech. Natl., Argentina), Jesus Alvarez Castillo (Mexico, U. )., Jaime Alvarez-Muñiz (Santiago de Compostela, U. )., Rafael Alves Batista (Hamburg, U., II), Inst. Theor. Phys., amp, INFN, Michelangelo Ambrosio (Naples U., Naples), Amin Aminaei (Nijmegen, U., IMAPP), INFN, Gioacchino Alex Anastasi (Catania U., Catania), Luis Anchordoqui (Lehman, Coll. )., Sofia Andringa (LIP, INFN, Carla Aramo (Naples U., Fernando Arqueros (Madrid, U. )., Nicusor Arsene (Bucharest, U. )., Hernán Gonzalo Asorey (Centro Atomico Bariloche &amp, San Carlos de Bariloche &amp, Cantabria, U., Santander), Pedro Assis (LIP, Julien Aublin (Paris, U., VI-VII), Gualberto Avila (Pierre Auger, Observ. )., Nafiun Awal (New York, U. )., Alina Mihaela Badescu (Bucharest, Polytechnic, Inst. )., Colin Baus (KIT, Karlsruhe, EKP), Jim Beatty (Ohio State, U. )., Karl Heinz Becker (Wuppertal, U. )., Jose A Bellido (Adelaide, U. )., Corinne Berat (LPSC, Grenoble), Mario Edoardo Bertaina (IFSI, Xavier Bertou (Centro Atomico Bariloche &amp, Peter Biermann (Bonn, Max Planck, Inst., Radioastro, n. )., Pierre Billoir (Paris, U., Simon G Blaess (Adelaide, U. )., Alberto Blanco (LIP, Miguel Blanco (Paris, U., Jiri Blazek (Prague, Ins, t. Phys. )., INFN, Carla Bleve (Salento U., Lecce), Hans Blümer (KIT, Karlsruhe, IKP &amp, KIT, Karlsruhe, IKP), Martina Boháčová (Prague, Denise Boncioli (Gran Sasso), Carla Bonifazi (Rio de Janeiro Federal, U. )., Nataliia Borodai (Cracow, INP), Jeffrey Brack (Colorado State, U. )., Iliana Brancus (Bucharest, IFIN-HH), Thomas Bretz (Aachen, Tec, h. Hochsch. )., Ariel Bridgeman (KIT, Pedro Brogueira (LIP, Peter Buchholz (Siegen, U. )., CAFPE, Antonio Bueno (Granada U., Granada), Stijn Buitink (Nijmegen, U., INFN, Mario Buscemi (Naples U., Karen, S Caballero-Mora (Unlisted, FR), INFN, Barbara Caccianiga (Milan U., Milan), Lorenzo Caccianiga (Paris, U., Marina Candusso (Rome, U., Tor Vergata &amp, INFN, Rome2), Laurentiu Caramete (Bucharest, Space Sciences), Inst., Caruso, R, Antonella Castellina (IFSI, INFN, Gabriella Cataldi (Salento U., Lorenzo Cazon (LIP, INFN, Rosanna Cester (Turin U., Alan, G Chavez (IFM-UMSNH, Michoacan), Andrea Chiavassa (IFSI, Jose Augusto Chinellato (Campinas State, U. )., Jiri Chudoba (Prague, INFN, Marco Cilmo (Naples U., Roger W Clay (Adelaide, U. )., INFN, Giuseppe Cocciolo (Salento U., INFN, Roberta Colalillo (Naples U., Alan Coleman (Penn State, U. )., INFN, Laura Collica (Milan U., INFN, Maria Rita Coluccia (Salento U., Ruben Conceição (LIP, Fernando Contreras (Pierre Auger, Observ. )., Mathew J Cooper (Adelaide, U. )., Alain Cordier (Orsay, LAL), Stephane Coutu (Penn State, U. )., Corbin Covault (Case Western Reserve, U. )., James Cronin (Chicago, U., EFI), Richard Dallier (Station Radioastronomy, Nancay &amp, SUBATECH, Nantes), Bruno Daniel (Campinas State, U. )., Buenos Aires, Sergio Dasso (Buenos Aires U., IAFE), Kai Daumiller (KIT, Bruce R Dawson (Adelaide, U. )., Rogerio, M de Almeida (Niteroi, Fluminense, U. )., Sijbrand J de Jong (Nijmegen, U., IMAPP &amp, NIKHEF, Amsterdam), Giuseppe De Mauro (Nijmegen, U., Joao de Mello Neto (Rio de Janeiro Federal, U. )., INFN, Ivan De Mitri (Salento U., Jaime de Oliveira (Niteroi, Vitor de Souza (Sao Paulo, U., Sao, Carlos), Luis del Peral (Alcala de Henares, U. )., Olivier Deligny (Orsay, Niraj Dhital (Michigan, Tech. U. )., Claudio Di Giulio (Rome, U., INFN, Armando Di Matteo (L'Aquila U., Aquila), Johana Chirinos Diaz (Michigan, Tech. U. )., Mary Lucia Díaz Castro (Campinas State, U. )., Francisco Diogo (LIP, Carola Dobrigkeit (Campinas State, U. )., Wendy Docters (Groningen, KVI), Juan Carlos D'Olivo (Mexico, U. )., Alexei Dorofeev (Colorado State, U. )., Qader Dorosti Hasankiadeh (KIT, Rita dos Anjos (Sao Paulo, U., Maria Teresa Dova (La Plata, U. )., Jan Ebr (Prague, Ralph Engel (KIT, Martin Erdmann (Aachen, Mona Erfani (Siegen, U. )., Fermilab), Carlos O Escobar (Campinas State U., Joao Espadanal (LIP, Alberto Etchegoyen, (U. Tech. Natl., Heino Falcke (Nijmegen, U., Amsterdam &amp, ASTRON, Dwingeloo), Ke Fang (Chicago, U., Glennys Farrar (New York, U. )., Anderson Fauth (Campinas State, U. )., Norberto Fazzini (Fermilab), Andrew P Ferguson (Case Western Reserve, U. )., Brian Fick (Michigan, Tech. U. )., Juan Manuel Figueira, Alberto, Filevich, Andrej Filipčič (Stefan, Inst., Ljubljana &amp, Nova Gorica, U. )., Octavian Fratu (Bucharest, Martín Miguel Freire (IFIR, Rosario &amp, Rosario, U. )., Toshihiro Fujii (Chicago, U., Beatriz García, (Natl. Tech. U., San, Rafael), Diego Garcia-Gamez (Orsay, Diego Garcia-Pinto (Madrid, U. )., Florian Gate (SUBATECH, Hartmut Gemmeke (KIT, Karlsruhe, IPE), Alexandru Gherghel-Lascu (Bucharest, Piera Luisa Ghia (Paris, U., Ugo Giaccari (Rio de Janeiro Federal, U. )., INFN, Marco Giammarchi (Milan U., Maria, Giller, Dariusz Głas (Lodz, U. )., Christian Glaser (Aachen, Henry Glass (Fermilab), Geraldina, Golup, Mariano Gómez Berisso (Centro Atomico Bariloche &amp, Primo F Gómez Vitale (Pierre Auger, Observ. )., Nicolás, González, Ben Gookin (Colorado State, U. )., Jacob Gordon (Ohio State, U. )., Alessio Gorgi (IFSI, Peter Gorham (Hawaii, U. )., Philippe Gouffon (Sao Paulo, U. )., Nathan Griffith (Ohio State, U. )., Aurelio Grillo (Gran Sasso), Trent D Grubb (Adelaide, U. )., INFN, Fausto Guarino (Naples U., Germano Guedes (UEFS, Feira de Santana), Matías Rolf Hampel, Patricia Hansen (La Plata, U. )., Diego Harari (Centro Atomico Bariloche &amp, Thomas A Harrison (Adelaide, U. )., Sebastian Hartmann (Aachen, John Harton (Colorado State, U. )., Andreas Haungs (KIT, Thomas Hebbeker (Aachen, Dieter Heck (KIT, Philipp Heimann (Siegen, U. )., Alexander, E Herve (KIT, Gary C Hill (Adelaide, U. )., Carlos Hojvat (Fermilab), Nicholas Hollon (Chicago, U., Ewa Holt (KIT, Piotr Homola (Wuppertal, U. )., Jörg Hörandel (Nijmegen, U., Pavel Horvath (Palacky, U. )., Miroslav Hrabovský (Prague, Ins, t. Phys. &amp, Palacky U. )., Daniel Huber (KIT, Tim Huege (KIT, INFN, Antonio Insolia (Catania U., Paula Gina Isar (Bucharest, Ingolf Jandt (Wuppertal, U. )., Stefan Jansen (Nijmegen, U., Cecilia Jarne (La Plata, U. )., Jeffrey, A Johnsen (Colorado School of Mines), Mariela, Josebachuili, Alex Kääpä (Wuppertal, U. )., Olga Kambeitz (KIT, Karl Heinz Kampert (Wuppertal, U. )., Peter Kasper (Fermilab), Igor Katkov (KIT, Bianca Keilhauer (KIT, Ernesto Kemp (Campinas State, U. )., Roger Kieckhafer (Michigan, Tech. U. )., Hans Klages (KIT, Matthias Kleifges (KIT, Jonny Kleinfeller (Pierre Auger, Observ. )., Raphael Krause (Aachen, Nicole Krohm (Wuppertal, U. )., Daniel Kuempel (Aachen, Gasper Kukec Mezek (Nova Gorica, U. )., Norbert Kunka (KIT, Alaa Metwaly Kuotb Awad (KIT, Danielle LaHurd (Case Western Reserve, U. )., Luca Latronico (IFSI, Robert Lauer (New Mexico, U. )., Markus Lauscher (Aachen, Pascal Lautridou (SUBATECH, Sandra Le Coz, Didier Lebrun (LPSC, Paul Lebrun (Fermilab), Marcelo Augusto Leigui de Oliveira (ABC Federal, U. )., Antoine Letessier-Selvon (Paris, U., Isabelle Lhenry-Yvon (Orsay, Katrin Link (KIT, Luis Lopes (LIP, Rebeca López (Puebla, U., Ins, t. Fis. )., Aida López Casado (Santiago de Compostela, U. )., Karim Louedec (LPSC, Agustin, Lucero, Max Malacari (Adelaide, U. )., INFN, Manuela Mallamaci (Milan U., Jennifer Maller (SUBATECH, Dusan Mandat (Prague, Paul Mantsch (Fermilab), Analisa Mariazzi (La Plata, U. )., Vincent Marin (SUBATECH, CAFPE, Ioana Mariş (Granada U., Giovanni, Marsella, INFN, Daniele Martello (Salento U., Humberto Martinez (CINVESTAV, Oscar Martínez Bravo (Puebla, U., Diane Martraire (Orsay, Jimmy Masías Meza (Buenos Aires, U. )., Hermann-Josef Mathes (KIT, Sebastian Mathys (Wuppertal, U. )., James Matthews (Louisiana State, U. )., John Matthews (New Mexico, U. )., Giorgio Matthiae (Rome, U., Daniela Maurizio (Rio de Janeiro, CBPF), Eric Mayotte (Colorado School of Mines), Peter Mazur (Fermilab), Carlos Medina (Colorado School of Mines), Gustavo Medina-Tanco (Mexico, U. )., Rebecca Meissner (Aachen, Victor Mello (Rio de Janeiro Federal, U. )., Diego, Melo, Alexander Menshikov (KIT, Stefano Messina (Groningen, Maria Isabel Micheletti (IFIR, Lukas Middendorf (Aachen, Ignacio A Minaya (Madrid, U. )., INFN, Lino Miramonti (Milan U., Bogdan Mitrica (Bucharest, CAFPE, Laura Molina-Bueno (Granada U., Silvia Mollerach (Centro Atomico Bariloche &amp, François Montanet (LPSC, Carlo Morello (IFSI, Miguel Mostafá (Penn State, U. )., Celio A Moura (ABC Federal, U. )., Marcio Aparecido Muller (Campinas State, U. )., Gero Müller (Aachen, Sarah Müller (KIT, CAFPE, Sergio Navas (Granada U., Petr Necesal (Prague, Lukas Nellen (Mexico, U. )., Anna Nelles (Nijmegen, U., Jens Neuser (Wuppertal, U. )., Phong H Nguyen (Adelaide, U. )., Mihai Niculescu-Oglinzanu (Bucharest, Marcus Niechciol (Siegen, U. )., Lukas Niemietz (Wuppertal, U. )., Tim Niggemann (Aachen, Dave Nitz (Michigan, Tech. U. )., Dalibor, Nosek, Vladimir Novotny (Charles, U. )., Lyberis Nožka (Palacky, U. )., Luis Núñez (Cantabria, U., Livingstone Ochilo (Siegen, U. )., Foteini Oikonomou (Penn State, U. )., Angela Olinto (Chicago, U., Noelia Pacheco (Alcala de Henares, U. )., Daniel Pakk Selmi-Dei (Campinas State, U. )., Miroslav Palatka (Prague, Juan Pallotta (LIDAR CITEFA), Philipp Papenbreer (Wuppertal, U. )., Gonzalo Parente (Santiago de Compostela, U. )., Alejandra Parra (Puebla, U., Thomas Paul (Lehman, Coll. &amp, Northeastern U. )., Miroslav Pech (Prague, Jan Pękala (Cracow, Rodrigo Pelayo (Ulisted, MX), Iuri Pepe (Bahia, U. )., INFN, Lorenzo Perrone (Salento U., Emily Petermann (Nebraska, U. )., Christine Peters (Aachen, INFN, Sergio Petrera (L'Aquila U., Yevgeniy Petrov (Colorado State, U. )., Jamyang Phuntsok (Penn State, U. )., Ricardo Piegaia (Buenos Aires, U. )., Tanguy Pierog (KIT, Pablo Pieroni (Buenos Aires, U. )., Mário Pimenta (LIP, INFN, Valerio Pirronello (Catania U., Manuel, Platino, Matthias Plum (Aachen, Alessio Porcelli (KIT, Czeslaw Porowski (Cracow, Raul Ribeiro Prado (Sao Paulo, U., Paolo Privitera (Chicago, U., Michael Prouza (Prague, Eduardo, J Quel (LIDAR CITEFA), Sven Querchfeld (Wuppertal, U. )., Sean Quinn (Case Western Reserve, U. )., Julian Rautenberg (Wuppertal, U. )., Olivier Ravel (SUBATECH, Diego, Ravignani, Darius Reinert (Aachen, Benoît Revenu (SUBATECH, Jan Ridky (Prague, Markus Risse (Siegen, U. )., Pablo Ristori (LIDAR CITEFA), INFN, Vincenzo Rizi (L'Aquila U., Washington Rodrigues de Carvalho (Santiago de Compostela, U. )., Jorge Rubén Rodriguez Rojo (Pierre Auger, Observ. )., Maria Dolores Rodríguez-Frías (Alcala de Henares, U. )., Dmytro Rogozin (KIT, Jaime Rosado (Madrid, U. )., Markus Roth (KIT, Esteban Roulet (Centro Atomico Bariloche &amp, Adrian Rovero (Buenos Aires, Steven J Saffi (Adelaide, U. )., Alexandra Saftoiu (Bucharest, Humberto Salazar (Puebla, U., Ahmed Saleh (Nova Gorica, U. )., Francisco Salesa Greus (Penn State, U. )., Gaetano Salina (Rome, U., Jose Sanabria Gomez (Cantabria, U., Federico, Sánchez, CAFPE, Patricia Sanchez-Lucas (Granada U., Edivaldo Moura Santos (Sao Paulo, U. )., Eva Santos (Campinas State, U. )., Fred Sarazin (Colorado School of Mines), Biswaijt Sarkar (Wuppertal, U. )., Raul Sarmento (LIP, Christian Sarmiento-Cano (Cantabria, U., Ricardo, Sato, Carlos Scarso (Pierre Auger, Observ. )., Markus Schauer (Wuppertal, U. )., INFN, Viviana Scherini (Salento U., Harald, Schieler, David Schmidt (KIT, Olaf Scholten (Groningen, Harm Schoorlemmer (Hawaii, U. )., Petr Schovánek (Prague, Frank, G Schröder, Alexander Schulz (KIT, Johannes Schulz (Nijmegen, U., Johannes Schumacher (Aachen, Sergio Sciutto (La Plata, U. )., Alberto Segreto (IASF, Palermo), Mariangela Settimo (Paris, U., Amir Shadkam (Louisiana State, U. )., Ronald, C Shellard (Rio de Janeiro, Guenter Sigl (Hamburg, U., Octavian Sima (Bucharest, U. )., Andrzej Śmiałkowski (Lodz, U. )., Radomir Šmída (KIT, Gregory Snow (Nebraska, U. )., Paul Sommers (Penn State, U. )., Sebastian Sonntag (Siegen, U. )., J Sorokin (Adelaide, U. )., Ruben Squartini (Pierre Auger, Observ. )., Yogendra N Srivastava (Northeastern, U. )., Denis Stanca (Bucharest, Samo Stanič (Nova Gorica, U. )., James Stapleton (Ohio State, U. )., Jaroslaw Stasielak (Cracow, Maurice Stephan (Aachen, Anne Stutz (LPSC, Federico Suarez, (U. Tech. Natl., Mauricio Suarez Durán (Cantabria, U., Tiina Suomijärvi (Orsay, A Daniel Supanitsky (Buenos Aires, Michael Sutherland (Ohio State, U. )., John Swain (Northeastern, U. )., Zbigniew Szadkowski (Lodz, U. )., Oscar Alejandro Taborda (Centro Atomico Bariloche &amp, Alex, Tapia, Andreas Tepe (Siegen, U. )., Vanessa Menezes Theodoro (Campinas State, U. )., Omar Tibolla (Unlisted, Charles Timmermans (Nijmegen, U., Carlos, J Todero Peixoto, Gabriel Toma (Bucharest, Lenka Tomankova (KIT, Bernardo Tomé (LIP, INFN, Aurelio Tonachini (Turin U., Guillermo Torralba Elipe (Santiago de Compostela, U. )., Diego Torres Machado (Rio de Janeiro Federal, U. )., Petr Travnicek (Prague, Marta Trini (Nova Gorica, U. )., Ralf Ulrich (KIT, Michael Unger (KIT, New York, U. )., Martin Urban (Aachen, Jose F Valdés Galicia (Mexico, U. )., Ines Valiño (Santiago de Compostela, U. )., INFN, Laura Valore (Naples U., Guus van Aar (Nijmegen, U., Patrick van Bodegom (Adelaide, U. )., M van den Berg (Groningen, Ad, Sjoert van Velzen (Nijmegen, U., Arjen van Vliet (Hamburg, U., Enrique Varela (Puebla, U., Bernardo Vargas Cárdenas (Mexico, U. )., Gary Varner (Hawaii, U. )., Rafael Vasquez (Rio de Janeiro Federal, U. )., Jose R Vázquez (Madrid, U. )., Ricardo Vázquez (Santiago de Compostela, U. )., Darko Veberič (KIT, Valerio Verzi (Rome, U., Jakub Vicha (Prague, Mariela, Videla, Luis Villaseñor (IFM-UMSNH, Brian Vlcek (Alcala de Henares, U. )., Serguei Vorobiov (Nova Gorica, U. )., Hernan Wahlberg (La Plata, U. )., Oscar Wainberg, (U. Tech. Natl., David Walz (Aachen, Alan, Watson, Marc Weber (KIT, Klaus Weidenhaupt (Aachen, Andreas Weindl (KIT, Christoph Welling (Aachen, Felix Werner (KIT, Allan Widom (Northeastern, U. )., Lawrence Wiencke (Colorado School of Mines), Henryk Wilczyński (Cracow, Tobias, Winchen, David Wittkowski (Wuppertal, U. )., Brian, Wundheiler, Sarka Wykes (Nijmegen, U., Lili Yang (Nova Gorica, U. )., Tolga Yapici (Michigan, Tech. U. )., Alexey Yushkov (Siegen, U. )., Enrique Zas (Santiago de Compostela, U. )., Danilo, Zavrtanik, Marko Zavrtanik (Stefan, Inst., Arnulfo Zepeda (CINVESTAV, Benedikt Zimmermann (KIT, Michael Ziolkowski (Siegen, U. )., INFN, Francesca Zuccarello (Catania U., Catania), ), Aab, A., Abreu, P., Aglietta, M., Ahn, E. J., Al Samarai, I., Albuquerque, I. F. M., Allekotte, I., Allison, P., Almela, A., Alvarez Castillo, J., Alvarez Muñiz, J., Alves Batista, R., Ambrosio, M., Aminaei, A., Anastasi, G. A., Anchordoqui, L., Andringa, S., Aramo, C., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Avila, G., Awal, N., Badescu, A. M., Baus, C., Beatty, J. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Billoir, P., Blaess, S. G., Blanco, A., Blanco, M., Blazek, J., Bleve, C., Blümer, H., Boháčová, M., Boncioli, D., Bonifazi, C., Borodai, N., Brack, J., Brancus, I., Bretz, T., Bridgeman, A., Brogueira, P., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero Mora, K. S., Caccianiga, B., Caccianiga, L., Candusso, M., Caramete, L., Caruso, R., Castellina, A., Cataldi, G., Cazon, L., Cester, R., Chavez, A. G., Chiavassa, A., Chinellato, J. A., Chudoba, J., Cilmo, M., Clay, R. W., Cocciolo, G., Colalillo, Roberta, Coleman, A., Collica, L., Coluccia, M. R., Conceição, R., Contreras, F., Cooper, M. J., Cordier, A., Coutu, S., Covault, C. E., Cronin, J., Dallier, R., Daniel, B., Dasso, S., Daumiller, K., Dawson, B. R., De Almeida, R. M., De Jong, S. J., De Mauro, G., De Mello Neto, J. R. T., De Mitri, I., De Oliveira, J., De Souza, V., Del Peral, L., Deligny, O., Dhital, N., Di Giulio, C., Di Matteo, A., Diaz, J. C., Díaz Castro, M. L., Diogo, F., Dobrigkeit, C., Docters, W., D'Olivo, J. C., Dorofeev, A., Dorosti Hasankiadeh, Q., Dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Erdmann, M., Erfani, M., Escobar, C. O., Espadanal, J., Etchegoyen, A., Falcke, H., Fang, K., Farrar, G., Fauth, A. C., Fazzini, N., Ferguson, A. P., Fick, B., Figueira, J. M., Filevich, A., Filipčič, A., Fratu, O., Freire, M. M., Fujii, T., García, B., Garcia Gamez, D., Garcia Pinto, D., Gate, F., Gemmeke, H., Gherghel Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Głas, D., Glaser, C., Glass, H., Golup, G., Gómez Berisso, M., Gómez Vitale, P. F., González, N., Gookin, B., Gordon, J., Gorgi, A., Gorham, P., Gouffon, P., Griffith, N., Grillo, A. F., Grubb, T. D., Guarino, Fausto, Guedes, G. P., Hampel, M. R., Hansen, P., Harari, D., Harrison, T. A., Hartmann, S., Harton, J. L., Haungs, A., Hebbeker, T., Heck, D., Heimann, P., Herve, A. E., Hill, G. C., Hojvat, C., Hollon, N., Holt, E., Homola, P., Hörandel, J. R., Horvath, P., Hrabovský, M., Huber, D., Huege, T., Insolia, A., Isar, P. G., Jandt, I., Jansen, S., Jarne, C., Johnsen, J. A., Josebachuili, M., Kääpä, A., Kambeitz, O., Kampert, K. H., Kasper, P., Katkov, I., Keilhauer, B., Kemp, E., Kieckhafer, R. M., Klages, H. O., Kleifges, M., Kleinfeller, J., Krause, R., Krohm, N., Kuempel, D., Kukec Mezek, G., Kunka, N., Kuotb Awad, A. W., Lahurd, D., Latronico, L., Lauer, R., Lauscher, M., Lautridou, P., Le Coz, S., Lebrun, D., Lebrun, P., Leigui De Oliveira, M. A., Letessier Selvon, A., Lhenry Yvon, I., Link, K., Lopes, L., López, R., López Casado, A., Louedec, K., Lucero, A., Malacari, M., Mallamaci, M., Maller, J., Mandat, D., Mantsch, P., Mariazzi, A. G., Marin, V., Mariş, I. C., Marsella, G., Martello, D., Martinez, H., Martínez Bravo, O., Martraire, D., Masías Meza, J. J., Mathes, H. J., Mathys, S., Matthews, J., Matthews, J. A. J., Matthiae, G., Maurizio, D., Mayotte, E., Mazur, P. O., Medina, C., Medina Tanco, G., Meissner, R., Mello, V. B. B., Melo, D., Menshikov, A., Messina, S., Micheletti, M. I., Middendorf, L., Minaya, I. A., Miramonti, L., Mitrica, B., Molina Bueno, L., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Moura, C. A., Muller, M. A., Müller, G., Müller, S., Navas, S., Necesal, P., Nellen, L., Nelles, A., Neuser, J., Nguyen, P. H., Niculescu Oglinzanu, M., Niechciol, M., Niemietz, L., Niggemann, T., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Núñez, L. A., Ochilo, L., Oikonomou, F., Olinto, A., Pacheco, N., Pakk Selmi Dei, D., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Paul, T., Pech, M., Pokala, J., Pelayo, R., Pepe, I. M., Perrone, L., Petermann, E., Peters, C., Petrera, S., Petrov, Y., Phuntsok, J., Piegaia, R., Pierog, T., Pieroni, P., Pimenta, M., Pirronello, V., Platino, M., Plum, M., Porcelli, A., Porowski, C., Prado, R. R., Privitera, P., Prouza, M., Quel, E. J., Querchfeld, S., Quinn, S., Rautenberg, J., Ravel, O., Ravignani, D., Reinert, D., Revenu, B., Ridky, J., Risse, M., Ristori, P., Rizi, V., Rodrigues De Carvalho, W., Rodriguez Rojo, J., Rodríguez Frías, M. D., Rogozin, D., Rosado, J., Roth, M., Roulet, E., Rovero, A. C., Saffi, S. J., Saftoiu, A., Salazar, H., Saleh, A., Salesa Greus, F., Salina, G., Sanabria Gomez, J. D., Sánchez, F., Sanchez Lucas, P., Santos, E., Santos, E. M., Sarazin, F., Sarkar, B., Sarmento, R., Sarmiento Cano, C., Sato, R., Scarso, C., Schauer, M., Scherini, V., Schieler, H., Schmidt, D., Scholten, O., Schoorlemmer, H., Schovánek, P., Schröder, F. G., Schulz, A., Schulz, J., Schumacher, J., Sciutto, S. J., Segreto, A., Settimo, M., Shadkam, A., Shellard, R. C., Sigl, G., Sima, O., Śmiałkowski, A., Šmída, R., Snow, G. R., Sommers, P., Sonntag, S., Sorokin, J., Squartini, R., Srivastava, Y. N., Stanca, D., Stanič, S., Stapleton, J., Stasielak, J., Stephan, M., Stutz, A., Suarez, F., Suarez Durán, M., Suomijärvi, T., Supanitsky, A. D., Sutherland, M. S., Swain, J., Szadkowski, Z., Taborda, O. A., Tapia, A., Tepe, A., Theodoro, V. M., Timmermans, C., Todero Peixoto, C. J., Toma, G., Tomankova, L., Tomé, B., Tonachini, A., Torralba Elipe, G., Torres Machado, D., Travnicek, P., Trini, M., Ulrich, R., Unger, M., Urban, M., Valdés Galicia, J. F., Valiño, I., Valore, Laura, Van Aar, G., Van Bodegom, P., Van Den Berg, A. M., Van Velzen, S., Van Vliet, A., Varela, E., Vargas Cárdenas, B., Varner, G., Vasquez, R., Vázquez, J. R., Vázquez, R. A., Veberič, D., Verzi, V., Vicha, J., Videla, M., Villaseñor, L., Vlcek, B., Vorobiov, S., Wahlberg, H., Wainberg, O., Walz, D., Watson, A. A., Weber, M., Weidenhaupt, K., Weindl, A., Welling, C., Werner, F., Widom, A., Wiencke, L., Wilczyński, H., Winchen, T., Wittkowski, D., Wundheiler, B., Wykes, S., Yang, L., Yapici, T., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zepeda, A., Zimmermann, B., Ziolkowski, M., Zuccarello, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Centre National de la Recherche Scientifique (CNRS), Unité Scientifique de la Station de Nançay (USN), 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), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Laboratoire de l'Accélérateur Linéaire (LAL), 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), Institut de Physique Nucléaire d'Orsay (IPNO), Pierre AUGER, ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011), ANR-10-LABX-0063,ILP,Institute Lagrange of Paris(2010), European Project: 328826,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IEF,AUGER2FUTURE(2013), Elementary Particle Physics, Physics, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), 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 Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Ahn, E. . j., Albuquerque, I. . f. . m., Anastasi, G. . a., Badescu, A. . m., Beatty, J. . j., Becker, K. . h., Bellido, J. . a., Bertaina, M. . e., Biermann, P. . l., Blaess, S. . g., Bleve, Carla, Caballero Mora, K. . s., Chavez, A. . g., Chinellato, J. . a., Clay, R. . w., Colalillo, R., Coluccia, MARIA RITA, Cooper, M. . j., Covault, C. . e., Dawson, B. . r., de Almeida, R. . m., de Jong, S. . j., de Mello Neto, J. . r. . t., DE MITRI, Ivan, de Oliveira, J., de Souza, V., del Peral, L., Diaz, J. . c., Díaz Castro, M. . l., D’Olivo, J. . c., dos Anjos, R. . c., Dova, M. . t., Escobar, C. . o., Fauth, A. . c., Ferguson, A. . p., Figueira, J. . m., Freire, M. . m., Ghia, P. . l., Gómez Vitale, P. . f., Grillo, A. . f., Grubb, T. . d., Guarino, F., Guedes, G. . p., Hampel, M. . r., Harrison, T. . a., Harton, J. . l., Herve, A. . e., Hill, G. . c., Hörandel, J. . r., Isar, P. . g., Johnsen, J. . a., Kampert, K. . h., Kieckhafer, R. . m., Klages, H. . o., Kuotb Awad, A. . w., Leigui de Oliveira, M. . a., Mariazzi, A. . g., Mariş, I. . c., Marsella, Giovanni, Martello, Daniele, Masías Meza, J. . j., Mathes, H. . j., Matthews, J. . a. . j., Mazur, P. . o., Mello, V. . b. . b., Micheletti, M. . i., Minaya, I. . a., Moura, C. . a., Muller, M. . a., Nguyen, P. . h., Núñez, L. . a., Pȩkala, J., Pepe, I. . m., Perrone, Lorenzo, Prado, R. . r., Quel, E. . j., Rodrigues de Carvalho, W., Rodríguez Frías, M. . d., Rovero, A. . c., Saffi, S. . j., Sanabria Gomez, J. . d., Santos, E. . m., Schröder, F. . g., Sciutto, S. . j., Shellard, R. . c., Snow, G. . r., Srivastava, Y. . n., Supanitsky, A. . d., Sutherland, M. . s., Taborda, O. . a., Theodoro, V. . m., Todero Peixoto, C. . j., Valdés Galicia, J. . f., Valore, L., van Aar, G., van Bodegom, P., van den Berg, A. . m., van Velzen, S., van Vliet, A., Vázquez, J. . r., Vázquez, R. . a., Watson, A. . a., Research unit Astroparticle Physics, and Research unit Nuclear & Hadron Physics

Subjects
Cosmic ray showers, Astronomy, Ciencias Físicas, ULTRA HIGH ENERGY COSMIC RAYS, Astrophysics, 01 natural sciences, purl.org/becyt/ford/1 [https], ultra-high energy cosmic rays, extensive air showers, radio energy estimation, CODALEMA, Observatory, Radio detection, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Detector, Astrophysics::Instrumentation and Methods for Astrophysics, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, CIENCIAS NATURALES Y EXACTAS, EXTENSIVE AIR-SHOWERS, MONTE-CARLO SIMULATIONS, EMISSION, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Nuclear and High Energy Physics, EXTENSIVE AIR-SHOWERS, MONTE-CARLO SIMULATIONS, EMISSION, CODALEMA, COREAS, LOFAR, AIR SHOWERS, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, EXTENSIVE AIR-SHOWERS, RADIO EMISSION, 0103 physical sciences, High Energy Physics, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Cosmic rays, Pierre Auger Observatory, 010308 nuclear & particles physics, Radiant energy, Física, LOFAR, purl.org/becyt/ford/1.3 [https], ASTROFÍSICA, Computational physics, Astronomía, COREAS, Earth's magnetic field, Air shower, Experimental High Energy Physics, EMISSION, MONTE-CARLO SIMULATIONS
Abstract

The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30-80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy - corrected for geometrical effects - is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal., La lista completa de autores que integran el documento puede consultarse en el archivo, Instituto de Física La Plata

Published
2016

10. Measurement of the radiation energy in the radio signal of extensive air showers as a universal estimator of cosmic-ray energy

Author

Alaa Kuotb Awad, Benoît Revenu, James Matthews, Alexandra Saftoiu, Alberto Filevich, Peter Hansen, Ivan De Mitri, I. Lhenry-Yvon, John Matthews, Peter Buchholz, Philipp Papenbreer, Petr Travnicek, H. Wahlberg, A. Nelles, R. Piegaia, I.M. Brancus, Alan Coleman, T. Hebbeker, Trent D. Grubb, D. Huber, Marco Aglietta, Eun-Joo Ahn, S. Vorobiov, K. Weidenhaupt, E.M. Holt, B. Wundheiler, A. Saleh, A. Parra, R. J. Lauer, Juan Manuel Figueira, S. Jansen, Bruno Daniel, Maria-Teresa Dova, Foteini Oikonomou, M. R. Hampel, Peter Mazur, J. Sorokin, Marcelo Augusto Leigui de Oliveira, Sarka Wykes, R. Meissner, Octavian Fratu, G. Parente, M. Trini, Roberta Colalillo, O. Wainberg, C. Bleve, P. Pieroni, S. Müller, Vincenzo Rizi, Nicusor Arsene, Julian Rautenberg, V. B. B. Mello, K. H. Becker, A. G. Mariazzi, Eric Mayotte, Jeffrey A. Johnsen, Sven Querchfeld, L. Perrone, R. C. Shellard, W. Docters, Carlos Hojvat, Ernesto Kemp, Xavier Bertou, Luis del Peral, Ugo Giaccari, Henryk Wilczyński, J. J. Beatty, Norbert Kunka, D. Nitz, Silvia Mollerach, D. Lebrun, S. Quinn, Sjoert van Velzen, Primo F. Gómez Vitale, R. Sato, S. Coutu, Norberto Fazzini, Antonio Bueno, Antonio Insolia, M. Josebachuili, Gualberto Avila, Ingomar Allekotte, G. Matthiae, Angela V. Olinto, O. Kambeitz, M. Ambrosio, Eva Santos, R. Krause, Jose Sanabria Gomez, M. Zavrtanik, Fred Sarazin, Lukas Nellen, B. Caccianiga, Julien Aublin, A. Shadkam, Amin Aminaei, Rafael Alves Batista, Jakub Vicha, Pedro Assis, Radomir Smida, Diego Harari, B. Gookin, P. H. Nguyen, Alberto Etchegoyen, Darius Reinert, Lorenzo Caccianiga, V. M. Theodoro, Tobias Winchen, D. Martello, Karen S. Caballero-Mora, Michael Unger, D. Melo, Luca Latronico, Guenter Sigl, D. Garcia-Pinto, Alessio Gorgi, Paul Sommers, A. Blanco, M. J. Cooper, S. Stanič, Carlos Medina, Tanguy Pierog, Mariano Gómez Berisso, D. Rogozin, Alejandro Almela, E. M. Santos, P. Heimann, Florian Gaté, J. R. Vázquez, Carla Bonifazi, Bernardo Vargas Cárdenas, A. C. Rovero, B. Tome, Marco Giammarchi, D. Garcia-Gamez, J. W. H. Gordon, Jose A. Bellido, L. Niemietz, S. Hartmann, Martin Erdmann, Jan Pękala, Hans Klages, A. Chiavassa, P. Sanchez-Lucas, Vitor de Souza, Bruce R. Dawson, Tim Huege, Carola Dobrigkeit, M. Plum, P. Abreu, Miguel Mostafá, C. Porowski, S. Sonntag, Markus Risse, Christian Sarmiento-Cano, B. Vlcek, Dariusz Glas, Diego Ravignani, O. A. Taborda, M. Settimo, M. Blanco, Mário Pimenta, Gregory R Snow, Pablo Ristori, P. H. Kasper, Gaetano Salina, Maria Rita Coluccia, Yogendra N. Srivastava, Alan Watson, Glennys R. Farrar, C. Jarne, A. Śmiałkowski, Andreas Weindl, Jaime Rosado, R. Cester, Alina Mihaela Badescu, F. Sánchez, N. Awal, Beatriz García, Jeffrey Brack, Olaf Scholten, Humberto Ibarguen Salazar, J. W. Cronin, Harald Schieler, Antoine Letessier-Selvon, C. Aramo, B. Mitrica, Heino Falcke, Nicolás González, Mihai Niculescu-Oglinzanu, Jonny Kleinfeller, K. Louedec, Arnulfo Zepeda, Armando di Matteo, G. Cocciolo, Roger W Clay, R. López, M. Mallamaci, F. G. Schröder, Mary Lucia Díaz Castro, Denise Boncioli, Jiri Chudoba, P. Lebrun, Alex Kääpä, Alberto Segreto, G. Toma, Benedikt Zimmermann, Rúben Conceição, R. Vasquez, Dusan Mandat, Colin Baus, Darko Veberič, D. Martraire, Oscar Martínez Bravo, Miroslav Hrabovský, T. Yapici, Alexey Yushkov, G. A. Anastasi, Pascal Lautridou, W. R. Carvalho, Dieter Heck, Martin Urban, G. S. Varner, Nataliia Borodai, Toshihiro Fujii, A. Menshikov, C. Morello, Jaroslaw Stasielak, Luis A. Anchordoqui, Markus Roth, N. Griffith, S. G. Blaess, Niraj Dhital, Jörg R. Hörandel, Thomas Harrison, Jaime de Oliveira, I. Valiño, H. Blümer, Max Malacari, Lili Yang, Laura Valore, L. Lopes, Lukas Middendorf, Corinne Berat, Piotr Homola, Lawrence Wiencke, Fausto Guarino, A. Filipčič, A. Aab, Johannes Schumacher, J. Neuser, Alex Tapia, Christine Peters, Ad M. van den Berg, Juan Pallotta, S. Le Coz, Jaime Alvarez-Muñiz, Alexandru Gherghel-Lascu, Mauricio Suaréz Durán, Petr Schovanek, L. Caramete, Rita dos Anjos, João de Mello Neto, H. Gemmeke, Peter L. Biermann, Sergio Sciutto, L. Ochilo, T. Suomijärvi, Karl-Heinz Kampert, Antonella Castellina, M. I. Micheletti, Federico Suarez, A. Schulz, J. Stapleton, L. Molina-Bueno, Q. Hasankiadeh, L. Tomankova, F. Arqueros, P. Necesal, Daniel Pakk Selmi-Dei, Imen Al Samarai, Martina Bohacova, David Walz, Johannes Schulz, Ruben Squartini, Paolo Privitera, F. Diogo, Juan Carlos D'Olivo, Patrick van Bodegom, Esteban Roulet, Patrick Allison, I. A. Minaya, Hernán Asorey, John Swain, Thomas Bretz, R.R. Prado, Harm Schoorlemmer, John L. Harton, T. Paul, A. Lucero, Jan Ridky, Marc Weber, F. Werner, Katrin Link, Denis Stanca, Guus van Aar, D. Maurizio, A. P. Ferguson, Corbin Covault, Y. Petrov, Geraldina Golup, Alexander Grillo, Zbigniew Szadkowski, Alessio Porcelli, J. C. Diaz, Rodrigo Pelayo, Stijn Buitink, N. Hollon, Olivier Ravel, C. A. Moura, Jose F. Valdés Galicia, Brian Fick, Lino Miramonti, Luis A. Nunez, M. Buscemi, C. Scarso, C. Welling, Marcus Niechciol, V. Novotny, Arjen van Vliet, A. Stutz, E. Varela, Rossella Caruso, S. Mathys, M. Erfani, Eduardo Quel, Henry Glass, Michael Sutherland, Francisco Salesa Greus, Guillermo Torralba Elipe, Piera Luisa Ghia, I. Jandt, Octavian Sima, Manuel Platino, M. D. Rodríguez-Frías, M. Schauer, N. Pacheco, Tim Niggemann, D. Nosek, Jan Ebr, V. Scherini, Jimmy Masías Meza, M. Candusso, Peter Gorham, Valerio Pirronello, Charles Timmermans, L. Collica, Sergio Petrera, Paul M. Mantsch, Miroslav Palatka, Jesus Alvarez Castillo, J. Blazek, Gustavo Medina-Tanco, Anderson Fauth, Vincent Marin, Rogerio M. de Almeida, M. E. Bertaina, B. Sarkar, Christian Glaser, S. Messina, Claudio Di Giulio, L. Nožka, J. Espadanal, Diego Torres Machado, Paula Gina Isar, Pedro Brogueira, G. Cataldi, Sergio Dasso, Martín Miguel Freire, P. Billoir, Aida López Casado, Carlos J. Todero Peixoto, G. Marsella, Daniel Kuempel, Carlos Escobar, R.M. Kieckhafer, Iuri Muniz Pepe, Maria Giller, Hermann-Josef Mathes, A. Cordier, Ivone F. M. Albuquerque, Ke Fang, Gašper Kukec Mezek, I. Katkov, Richard Dallier, Francesca Zuccarello, Kai Daumiller, Maurice Stephan, M. Ziolkowski, A. Tonachini, A.E. Herve, F. Montanet, J. Maller, V. Verzi, David Schmidt, S. Sánchez Navas, Jose Chinellato, Lorenzo Cazon, Ioana Codrina Maris, Ricardo Vázquez, Giuseppe De Mauro, G. C. Hill, Ralph Engel, Andreas Haungs, M. Videla, A. Daniel Supanitsky, Matthias Kleifges, H. Martinez, David Wittkowski, Germano Guedes, Danielle LaHurd, Olivier Deligny, Marcio Aparecido Muller, A. Dorofeev, L. Villaseñor, Marco Cilmo, Jorge Rubén Rodriguez Rojo, A. Bridgeman, E. Petermann, S. J. Saffi, Markus Lauscher, J. Phuntsok, Raul Sarmento, M. Prouza, Bianca Keilhauer, A. G. Chavez, Enrique Zas, Sijbrand J. de Jong, Fernando Contreras, N. Krohm, Miroslav Pech, R. Ulrich, Pavel Horvath, P. Gouffon, Allan Widom, Danilo Zavrtanik, Gero Müller, Sofia Andringa, A. Tepe, Research unit Nuclear & Hadron Physics, Research unit Astroparticle Physics, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire de l'Accélérateur Linéaire (LAL), 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), Unité Scientifique de la Station de Nançay (USN), 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), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Institut de Physique Nucléaire d'Orsay (IPNO), Pierre Auger Collaboration, ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011), European Project: 328826,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IEF,AUGER2FUTURE(2013), European Project: 246806,EC:FP7:PEOPLE,FP7-PEOPLE-2009-IRSES,EPLANET(2011), Aab, A., Abreu, P., Aglietta, M., Ahn, E. J., Al Samarai, I., Albuquerque, I. F. M., Allekotte, I., Allison, P., Almela, A., Alvarez Castillo, J., Alvarez Muñiz, J., Alves Batista, R., Ambrosio, M., Aminaei, A., Anastasi, G. A., Anchordoqui, L., Andringa, S., Aramo, C., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Avila, G., Awal, N., Badescu, A. M., Baus, C., Beatty, J. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Billoir, P., Blaess, S. G., Blanco, A., Blanco, M., Blazek, J., Bleve, C., Blümer, H., Boháčová, M., Boncioli, D., Bonifazi, C., Borodai, N., Brack, J., Brancus, I., Bretz, T., Bridgeman, A., Brogueira, P., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero Mora, K. S., Caccianiga, B., Caccianiga, L., Candusso, M., Caramete, L., Caruso, R., Castellina, A., Cataldi, G., Cazon, L., Cester, R., Chavez, A. G., Chiavassa, A., Chinellato, J. A., Chudoba, J., Cilmo, M., Clay, R. W., Cocciolo, G., Colalillo, Roberta, Coleman, A., Collica, L., Coluccia, M. R., Conceição, R., Contreras, F., Cooper, M. J., Cordier, A., Coutu, S., Covault, C. E., Cronin, J., Dallier, R., Daniel, B., Dasso, S., Daumiller, K., Dawson, B. R., De Almeida, R. M., De Jong, S. J., De Mauro, G., De Mello Neto, J. R. T., De Mitri, I., De Oliveira, J., De Souza, V., Del Peral, L., Deligny, O., Dhital, N., Di Giulio, C., Di Matteo, A., Diaz, J. C., Díaz Castro, M. L., Diogo, F., Dobrigkeit, C., Docters, W., D'Olivo, J. C., Dorofeev, A., Dorosti Hasankiadeh, Q., Dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Erdmann, M., Erfani, M., Escobar, C. O., Espadanal, J., Etchegoyen, A., Falcke, H., Fang, K., Farrar, G., Fauth, A. C., Fazzini, N., Ferguson, A. P., Fick, B., Figueira, J. M., Filevich, A., Filipčič, A., Fratu, O., Freire, M. M., Fujii, T., García, B., Garcia Gamez, D., Garcia Pinto, D., Gate, F., Gemmeke, H., Gherghel Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Głas, D., Glaser, C., Glass, H., Golup, G., Gómez Berisso, M., Gómez Vitale, P. F., González, N., Gookin, B., Gordon, J., Gorgi, A., Gorham, P., Gouffon, P., Griffith, N., Grillo, A. F., Grubb, T. D., Guarino, Fausto, Guedes, G. P., Hampel, M. R., Hansen, P., Harari, D., Harrison, T. A., Hartmann, S., Harton, J. L., Haungs, A., Hebbeker, T., Heck, D., Heimann, P., Herve, A. E., Hill, G. C., Hojvat, C., Hollon, N., Holt, E., Homola, P., Hörandel, J. R., Horvath, P., Hrabovský, M., Huber, D., Huege, T., Insolia, A., Isar, P. G., Jandt, I., Jansen, S., Jarne, C., Johnsen, J. A., Josebachuili, M., Kääpä, A., Kambeitz, O., Kampert, K. H., Kasper, P., Katkov, I., Keilhauer, B., Kemp, E., Kieckhafer, R. M., Klages, H. O., Kleifges, M., Kleinfeller, J., Krause, R., Krohm, N., Kuempel, D., Kukec Mezek, G., Kunka, N., Kuotb Awad, A. W., Lahurd, D., Latronico, L., Lauer, R., Lauscher, M., Lautridou, P., Le Coz, S., Lebrun, D., Lebrun, P., Leigui De Oliveira, M. A., Letessier Selvon, A., Lhenry Yvon, I., Link, K., Lopes, L., López, R., López Casado, A., Louedec, K., Lucero, A., Malacari, M., Mallamaci, M., Maller, J., Mandat, D., Mantsch, P., Mariazzi, A. G., Marin, V., Mariş, I. C., Marsella, G., Martello, D., Martinez, H., Martínez Bravo, O., Martraire, D., Masías Meza, J. J., Mathes, H. J., Mathys, S., Matthews, J., Matthews, J. A. J., Matthiae, G., Maurizio, D., Mayotte, E., Mazur, P. O., Medina, C., Medina Tanco, G., Meissner, R., Mello, V. B. B., Melo, D., Menshikov, A., Messina, S., Micheletti, M. I., Middendorf, L., Minaya, I. A., Miramonti, L., Mitrica, B., Molina Bueno, L., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Moura, C. A., Muller, M. A., Müller, G., Müller, S., Navas, S., Necesal, P., Nellen, L., Nelles, A., Neuser, J., Nguyen, P. H., Niculescu Oglinzanu, M., Niechciol, M., Niemietz, L., Niggemann, T., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Núñez, L. A., Ochilo, L., Oikonomou, F., Olinto, A., Pacheco, N., Pakk Selmi Dei, D., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Paul, T., Pech, M., Pkala, J., Pelayo, R., Pepe, I. M., Perrone, L., Petermann, E., Peters, C., Petrera, S., Petrov, Y., Phuntsok, J., Piegaia, R., Pierog, T., Pieroni, P., Pimenta, M., Pirronello, V., Platino, M., Plum, M., Porcelli, A., Porowski, C., Prado, R. R., Privitera, P., Prouza, M., Quel, E. J., Querchfeld, S., Quinn, S., Rautenberg, J., Ravel, O., Ravignani, D., Reinert, D., Revenu, B., Ridky, J., Risse, M., Ristori, P., Rizi, V., Rodrigues De Carvalho, W., Rodriguez Rojo, J., Rodríguez Frías, M. D., Rogozin, D., Rosado, J., Roth, M., Roulet, E., Rovero, A. C., Saffi, S. J., Saftoiu, A., Salazar, H., Saleh, A., Salesa Greus, F., Salina, G., Sanabria Gomez, J. D., Sánchez, F., Sanchez Lucas, P., Santos, E., Santos, E. M., Sarazin, F., Sarkar, B., Sarmento, R., Sarmiento Cano, C., Sato, R., Scarso, C., Schauer, M., Scherini, V., Schieler, H., Schmidt, D., Scholten, O., Schoorlemmer, H., Schovánek, P., Schröder, F. G., Schulz, A., Schulz, J., Schumacher, J., Sciutto, S. J., Segreto, A., Settimo, M., Shadkam, A., Shellard, R. C., Sigl, G., Sima, O., Śmiałkowski, A., Šmída, R., Snow, G. R., Sommers, P., Sonntag, S., Sorokin, J., Squartini, R., Srivastava, Y. N., Stanca, D., Stanič, S., Stapleton, J., Stasielak, J., Stephan, M., Stutz, A., Suarez, F., Suarez Durán, M., Suomijärvi, T., Supanitsky, A. D., Sutherland, M. S., Swain, J., Szadkowski, Z., Taborda, O. A., Tapia, A., Tepe, A., Theodoro, V. M., Timmermans, C., Todero Peixoto, C. J., Toma, G., Tomankova, L., Tomé, B., Tonachini, A., Torralba Elipe, G., Torres Machado, D., Travnicek, P., Trini, M., Ulrich, R., Unger, M., Urban, M., Valdés Galicia, J. F., Valiño, I., Valore, Laura, Van Aar, G., Van Bodegom, P., Van Den Berg, A. M., Van Velzen, S., Van Vliet, A., Varela, E., Vargas Cárdenas, B., Varner, G., Vasquez, R., Vázquez, J. R., Vázquez, R. A., Veberič, D., Verzi, V., Vicha, J., Videla, M., Villaseñor, L., Vlcek, B., Vorobiov, S., Wahlberg, H., Wainberg, O., Walz, D., Watson, A. A., Weber, M., Weidenhaupt, K., Weindl, A., Welling, C., Werner, F., Widom, A., Wiencke, L., Wilczyński, H., Winchen, T., Wittkowski, D., Wundheiler, B., Wykes, S., Yang, L., Yapici, T., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zepeda, A., Zimmermann, B., Ziolkowski, M., Zuccarello, F., Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (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), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aab A, Abreu P, Aglietta M, Ahn E J, Al Samarai I, Albuquerque I F M, Allekotte I, Allison P, Almela A, Alvarez Castillo J, Alvarez-Muñiz J, 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Wilczyński H, Winchen T, Wittkowski D, Wundheiler B, Wykes S, Yang L, Yapici T, Yushkov A, Zas E, Zavrtanik D, Zavrtanik M, Zepeda A, Zimmermann B, Ziolkowski M, Zuccarello F, Aab, A, Abreu, P, Aglietta, M, Ahn, E. 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A, Weber, M, Weidenhaupt, K, Weindl, A, Welling, C, Werner, F, Widom, A, Wiencke, L, Wilczyński, H, Winchen, T, Wittkowski, D, Wundheiler, B, Wykes, S, Yang, L, Yapici, T, Yushkov, A, Zas, E, Zavrtanik, D, Zavrtanik, M, Zepeda, A, Zimmermann, B, Ziolkowski, M, Elementary Particle Physics, and Physics

Subjects
Ciencias Físicas, Astronomy, General Physics and Astronomy, ultra-high energy cosmic rays, Astrophysics, 01 natural sciences, High Energy Physics - Experiment, purl.org/becyt/ford/1 [https], High Energy Physics - Experiment (hep-ex), CODALEMA, Observatory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Range (particle radiation), Radio detector, TUNKA-REX, Settore FIS/01 - Fisica Sperimentale, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Radio Technique, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, radio emission, CIENCIAS NATURALES Y EXACTAS, Radio wave, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Physics and Astronomy (all), 0103 physical sciences, extensive air showers, High Energy Physics, ultra-high energy cosmic rays, extensive air showers, radio emission, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Cosmic rays, Pierre Auger Observatory, 010308 nuclear & particles physics, Radiant energy, Física, LOFAR, purl.org/becyt/ford/1.3 [https], ASTROFÍSICA, SIMULATIONS, Computational physics, Astronomía, COREAS, Experimental High Energy Physics, ARRAY, EMISSION, SIMULATIONS, LOFAR, EMISSION
Abstract

We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8±0.7(stat)±6.7(syst) MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principles calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the direct calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory., La lista completa de autores que integran el documento puede consultarse en el archivo, Instituto de Física La Plata

Published
2016

11. Muons in air showers at the Pierre Auger Observatory

Author

D. Pakk Selmi-Dei, D. Maurizio, Johannes Schumacher, F. Salamida, Lorenzo Caccianiga, V. M. Theodoro, Y. Guardincerri, B. Tome, G. Müller, A. J. Matthews, R. Mussa, Alberto Daniel Supanitsky, A. Śmiałkowski, Markus Roth, C. Morello, Fausto Guarino, Matthias Kleifges, David Wittkowski, Germano Guedes, Danielle LaHurd, Olivier Deligny, Peter L. Biermann, Dusan Mandat, A. van Vliet, Eric Mayotte, Paolo Privitera, M. Gómez Berisso, R. C. Shellard, W. Docters, Yogendra N. Srivastava, M. I. Micheletti, E. Varela, N. Griffith, S. Grebe, M. Zavrtanik, Markus Risse, B. Wilczynska, R. Squartini, John L. Harton, Fred Sarazin, Lukas Nellen, T. Paul, Arnulfo Zepeda, R. Meyhandan, P. Abreu, Antonio Insolia, G. Torralba Elipe, F. Sánchez, Sergio Sciutto, L. Ochilo, D. Ravignani, G. Cocciolo, Eva Santos, R. Krause, Federico Suarez, B. Zamorano, Iván Sidelnik, Luis A. Anchordoqui, I. Al Samarai, Sasa Micanovic, Gaetano Salina, Rúben Conceição, L. Valore, Amin Aminaei, E.M. Holt, J. J. Beatty, Norbert Kunka, S. Messina, Azadeh Keivani, Ricardo Vázquez, W. Rodrigues de Carvalho, Maria Giller, A. Saleh, Maria-Teresa Dova, D. Nitz, Silvia Mollerach, B. Vlcek, H. Dembinski, G. Matthiae, M. Tartare, Darko Veberič, I. Zaw, M. Platino, M. Monasor, C. Aramo, J. W. Cronin, G. van Aar, Moritz Münchmeyer, R. Alves Batista, M. Ambrosio, G. C. Hill, Q. Dorosti Hasankiadeh, Tobias Winchen, P. Lebrun, Karen S. Caballero-Mora, B. Mitrica, Heino Falcke, Ralph Engel, V. Marin, Valerio Pirronello, L. Perrone, Sarka Wykes, Marco Giammarchi, J. Vicha, S. Quinn, A. Segreto, M. Ludwig, S. Hartmann, Jing Zhou, Julien Aublin, F. Werner, Jan Ridky, A. Stutz, P. Allison, V. Scherini, Martin Erdmann, G. Toma, Nataliia Borodai, E. J. Ahn, Paul Sommers, D. Martello, M. Blanco, R. Bonino, Michael Unger, S. Jansen, P. Gouffon, François Montanet, S. van Velzen, K. H. Becker, A. G. Mariazzi, K. Islo, Radomir Smida, Beatriz García, Octavian Fratu, D. Torres Machado, D. Melo, Roger W Clay, M. J. Cooper, A. Gorgi, Miroslav Palatka, S. J. De Jong, N. Krohm, Jose Chinellato, P. Lautridou, S. Navas, Johannes Schulz, M. Melissas, M. Will, B. Sarkar, Christian Glaser, M. Pimenta, Carlos Medina, M. De Domenico, Joshua A. Gordon, M. Avenier, A. Curutiu, A. Widom, Daniel Kuempel, M. Ave, Carlos Escobar, A. Filipčič, A. C. Rovero, Paula Gina Isar, C. Bleve, Pedro Brogueira, F. Salesa Greus, G. Cataldi, J. Espadanal, J. F. Valdés Galicia, I. De Mitri, A. Gascon Bravo, Dieter Heck, Martin Urban, V. de Souza, N. Palmieri, Ugo Giaccari, M. Zimbres Silva, A. Cordier, S. Maldera, P. W. Younk, Ivone F. M. Albuquerque, Ke Fang, C. J. Todero Peixoto, R. López, E. Trovato, J. Stapleton, Marc Weber, P. Billoir, Tanguy Pierog, M. E. Bertaina, Jörg R. Hörandel, G. Garilli, Lorenzo Cazon, Vincenzo Rizi, A. Menshikov, B. Gookin, S. T. Garcia Roca, Toshihiro Fujii, R. Sato, J. R. T. de Mello Neto, M. Ziolkowski, L. del Peral, O. Ravel, O. Martínez Bravo, E. M. Santos, K. Louedec, Mariangela Settimo, A. Shadkam, M. Buscemi, Maria Rita Coluccia, Alexey Yushkov, Bruno Daniel, K. Weidenhaupt, Bruce R. Dawson, N. Scharf, Antonio Bueno, M. Josebachuili, V. Purrello, P. Heimann, Tim Huege, H. Blümer, Max Malacari, Carlos Hojvat, D. Nosek, Juan Carlos D'Olivo, T. Yapici, D. Newton, Ernesto Kemp, Esteban Roulet, Piotr Homola, Lukas Middendorf, Jan Ebr, Serguei Vorobiov, Sergio Petrera, Christine Peters, J. J. Masías Meza, P. Facal San Luis, D. Maurel, H. Schoorlemmer, Gualberto Avila, Gustavo Medina-Tanco, Nicolás González, Ingomar Allekotte, S. Le Coz, D. Monnier Ragaigne, M. A. Leigui de Oliveira, T. Rossler, Piera Luisa Ghia, Guenter Sigl, Thomas Hebbeker, C. L. Williams, Angela V. Olinto, O. Krömer, O. A. Taborda, Sergio Dasso, Balázs Kégl, C. Di Giulio, S. J. Saffi, H. Martinez, G. Rodriguez Fernandez, A. P. Ferguson, Hernán Asorey, Corinne Berat, C. E. Santo, B. Revenu, U. Fröhlich, A. Tapia, C. Jarne, J. de Oliveira, J. R. Vázquez, Henryk Wilczyński, Hermann-Josef Mathes, Antoine Letessier-Selvon, van den Ad M Berg, Luca Latronico, Alejandro Almela, P. Sanchez-Lucas, D. Harari, M. Oliveira, Markus Lauscher, Kai Daumiller, J. Phuntsok, M. Videla, V. M. Aranda, Jeffrey Brack, Olaf Scholten, Humberto Ibarguen Salazar, Raul Sarmento, A. Aab, F. Gate, L. Caramete, H. Gemmeke, L. Tomankova, M. Mallamaci, G. Navarra, C. A. Moura, T. Yamamoto, Brian Fick, Samo Stanič, J. Lozano Bahilo, John Swain, Philipp Papenbreer, J. S. Díaz, D. Garcia-Pinto, Petr Travnicek, Alan Coleman, Trent D. Grubb, D. Huber, Petr Schovanek, Carla Bonifazi, Juan Manuel Figueira, Roberta Colalillo, Jose A. Bellido, M. Prouza, G. Yuan, Corbin Covault, Y. Petrov, Matías Rolf Hampel, J. A.J. Matthews, Xavier Bertou, J. Rodriguez Rojo, Bianca Keilhauer, A. G. Chavez, Pedro Assis, S. Riggi, Jaime Rosado, Alina Mihaela Badescu, F.G. Schröder, Enrique Zas, I. M. Pepe, Alexander Grillo, J. Stasielak, R. Cester, S. Coutu, Norberto Fazzini, Lino Miramonti, Fernando Contreras, M. D. Rodríguez-Frías, M. A. Muller, Peter Schiffer, Paulo J. S. Gonçalves, D. Kruppke-Hansen, D. Garcia-Gamez, Alberto Etchegoyen, I. C. Mariş, J. Allen, Hernan Wahlberg, C. Porowski, Alexandra Saftoiu, A. Dorofeev, I. Jandt, A. Tepe, I. Lhenry-Yvon, Octavian Sima, J. G. Gonzalez, Ralf Ulrich, Igor Katkov, R. R. Prado, Denise Boncioli, German Ros, A. Di Matteo, Paul M. Mantsch, B. Wundheiler, A. Parra, L. Villaseñor, Miguel Mostafá, Marcus Niechciol, Anderson Fauth, Gregory R Snow, P. H. Kasper, L. Martin, M. S. A. B. Leão, D. Lebrun, R. J. Lauer, L. Nožka, G. Parente, R. Piegaia, Marco Cilmo, P. Ristori, Alex Kääpä, Peter Mazur, S. Querchfeld, Colin Baus, V. M. Olmos-Gilbaja, L. Niemietz, N. Pacheco, J. Roberts, Tim Niggemann, Yingchun Zhu, H. Schieler, M. Fernandes, B. Caccianiga, Karl-Heinz Kampert, Antonella Castellina, B. Vargas Cárdenas, R. M. Kieckhafer, J. Rautenberg, T. Suomijärvi, J. Pallotta, G. S. Varner, O. Wainberg, E. J. Quel, Béatrice Fuchs, Niraj Dhital, W. C. Brown, I. Valiño, J. Neuser, M. Candusso, Peter Gorham, Charles Timmermans, L. Collica, Jiri Chudoba, Thomas Harrison, Richard Dallier, A. Nelles, Jaime Alvarez-Muñiz, Lu Lu, P. Pieroni, I. A. Minaya, André Schulz, F. Arqueros, P. Necesal, Martina Bohacova, Jan Pękala, Hans Klages, A. Chiavassa, A. E. Herve, K. B. Barber, L. R. Wiencke, J. Sorokin, A. Porcelli, B. D. Fox, M. L. Díaz Castro, G. Farrar, Francesca Zuccarello, Maurice Stephan, A. Tonachini, P.F. Gómez Vitale, J. Maller, G. Marsella, A. Weindl, N. Hollon, V. Verzi, V. Novotny, J. Bäuml, Rossella Caruso, A. Lucero, S. Mathys, M. Erfani, E. Petermann, Miroslav Pech, Pavel Horvath, M. S. Sutherland, Danilo Zavrtanik, Sofia Andringa, K. Link, D. Martraire, Miroslav Hrabovský, A. Haungs, O. Kambeitz, F. Diogo, R. M. de Almeida, Zbigniew Szadkowski, Rodrigo Pelayo, Stijn Buitink, Alberto Filevich, Peter Hansen, R. Gaior, Peter Buchholz, M. Szuba, I.M. Brancus, Carola Dobrigkeit, H. Glass, M. Plum, Marco Aglietta, Alan Watson, Jonny Kleinfeller, J. Alvarez Castillo, L. Molina-Bueno, David Walz, Laboratoire de Physique Subatomique et de Cosmologie ( LPSC ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ), Unité Scientifique de la Station de Nançay ( USN ), Observatoire de Paris-Université d'Orléans ( UO ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire SUBATECH Nantes ( SUBATECH ), Mines Nantes ( Mines Nantes ) -Université de Nantes ( UN ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de Physique Nucléaire d'Orsay ( IPNO ), Pierre AUGER, ANR-10-LABX-63,ANR-10-LABX-63, European Project : 328826,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IEF,AUGER2FUTURE ( 2013 ), European Project : 246806,EC:FP7:PEOPLE,FP7-PEOPLE-2009-IRSES,EPLANET ( 2011 ), UNIVERSIDADE DE ESTADUAL DE CAMPINAS, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Unité Scientifique de la Station de Nançay (USN), 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), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Laboratoire de l'Accélérateur Linéaire (LAL), 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), Institut de Physique Nucléaire d'Orsay (IPNO), ANR-10-LABX-0063,ILP,Institute Lagrange of Paris(2010), European Project: 328826,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IEF,AUGER2FUTURE(2013), European Project: 246806,EC:FP7:PEOPLE,FP7-PEOPLE-2009-IRSES,EPLANET(2011), Aab A., Abreu P., Aglietta M., Ahn E. J., Al Samarai I., Albuquerque I. F. M., Allekotte I., Allison P., Almela A., Alvarez Castillo J., Alvarez-Muñiz J., Alves Batista R., Ambrosio M., Aminaei A., Anchordoqui L., Andringa S., Aramo C., Aranda V. M., Arqueros F., Arsene N., Asorey H., Assis P., Aublin J., Ave M., Avenier M., Avila G., Awal N., Badescu A. M., Barber K. B., Bäuml J., Baus C., Beatty J. J., Becker K. H., Bellido J. A., Berat C., Bertaina M. E., Bertou X., Biermann P. L., Billoir P., Blaess S. G., Blanco A., Blanco M., Bleve C., Blümer H., Boháčová M., Boncioli D., Bonifazi C., Borodai N., Brack J., Brancus I., Bridgeman A., Brogueira P., Brown W. C., Buchholz P., Bueno A., Buitink S., Buscemi M., Caballero-Mora K. S., Caccianiga B., Caccianiga L., Candusso M., Caramete L., Caruso R., Castellina A., Cataldi G., Cazon L., Cester R., Chavez A. G., Chiavassa A., Chinellato J. A., Chudoba J., Cilmo M., Clay R. W., Cocciolo G., Colalillo R., Coleman A., Collica L., Coluccia M. R., Conceição R., Contreras F., Cooper M. J., Cordier A., Coutu S., Covault C. E., Cronin J., Dallier R., Daniel B., Dasso S., Daumiller K., Dawson B. R., de Almeida R. M., de Jong S. J., De Mauro G., de Mello Neto J. R. T., De Mitri I., de Oliveira J., de Souza V., del Peral L., Deligny O., Dembinski H., Dhital N., Di Giulio C., Di Matteo A., Diaz J. C., Díaz Castro M. L., Diogo F., Dobrigkeit C., Docters W., D’Olivo J. C., Dorofeev A., Dorosti Hasankiadeh Q., Dova M. T., Ebr J., Engel R., Erdmann M., Erfani M., Escobar C. O., Espadanal J., Etchegoyen A., Falcke H., Fang K., Farrar G., Fauth A. C., Fazzini N., Ferguson A. P., Fernandes M., Fick B., Figueira J. M., Filevich A., Filipčič A., Fox B. D., Fratu O., Freire M. M., Fuchs B., Fujii T., García B., Garcia-Pinto D., Gate F., Gemmeke H., Gherghel-Lascu A., Ghia P. L., Giaccari U., Giammarchi M., Giller M., Głas D., Glaser C., Glass H., Golup G., Gómez Berisso M., Gómez Vitale P. F., González N., Gookin B., Gordon J., Gorgi A., Gorham P., Gouffon P., Griffith N., Grillo A. F., Grubb T. D., Guardincerri Y., Guarino F., Guedes G. P., Hampel M. R., Hansen P., Harari D., Harrison T. A., Hartmann S., Harton J. L., Haungs A., Hebbeker T., Heck D., Heimann P., Herve A. E., Hill G. C., Hojvat C., Hollon N., Holt E., Homola P., Hörandel J. R., Horvath P., Hrabovský M., Huber D., Huege T., Insolia A., Isar P. G., Jandt I., Jansen S., Jarne C., Johnsen J. A., Josebachuili M., Kääpä A., Kambeitz O., Kampert K. H., Kasper P., Katkov I., Kégl B., Keilhauer B., Keivani A., Kemp E., Kieckhafer R. M., Klages H. O., Kleifges M., Kleinfeller J., Krause R., Krohm N., Krömer O., Kuempel D., Kunka N., LaHurd D., Latronico L., Lauer R., Lauscher M., Lautridou P., Le Coz S., Lebrun D., Lebrun P., Leigui de Oliveira M. A., Letessier-Selvon A., Lhenry-Yvon I., Link K., Lopes L., López R., López Casado A., Louedec K., Lu L., Lucero A., Malacari M., Maldera S., Mallamaci M., Maller J., Mandat D., Mantsch P., Mariazzi A. G., Marin V., Mariş I. C., Marsella G., Martello D., Martin L., Martinez H., Martínez Bravo O., Martraire D., Masías Meza J. J., Mathes H. J., Mathys S., Matthews J., Matthews J. A. J., Matthiae G., Maurel D., Maurizio D., Mayotte E., Mazur P. O., Medina C., Medina-Tanco G., Meissner R., Mello V. B. B., Melo D., Menshikov A., Messina S., Meyhandan R., Micheletti M. I., Middendorf L., Minaya I. A., Miramonti L., Mitrica B., Molina-Bueno L., Mollerach S., Montanet F., Morello C., Mostafá M., Moura C. A., Muller M. A., Müller G., Müller S., Mussa R., Navarra G., Navarro J. L., Navas S., Necesal P., Nellen L., Nelles A., Neuser J., Nguyen P. H., Niculescu-Oglinzanu M., Niechciol M., Niemietz L., Niggemann T., Nitz D., Nosek D., Novotny V., Nožka L., Ochilo L., Oikonomou F., Olinto A., Pacheco N., Pakk Selmi-Dei D., Palatka M., Pallotta J., Papenbreer P., Parente G., Parra A., Paul T., Pech M., Pȩkala J., Pelayo R., Pepe I. M., Perrone L., Petermann E., Peters C., Petrera S., Petrov Y., Phuntsok J., Piegaia R., Pierog T., Pieroni P., Pimenta M., Pirronello V., Platino M., Plum M., Porcelli A., Porowski C., Prado R. R., Privitera P., Prouza M., Purrello V., Quel E. J., Querchfeld S., Quinn S., Rautenberg J., Ravel O., Ravignani D., Revenu B., Ridky J., Riggi S., Risse M., Ristori P., Rizi V., Rodrigues de Carvalho W., Rodriguez Fernandez G., Rodriguez Rojo J., Rodríguez-Frías M. D., Rogozin D., Rosado J., Roth M., Roulet E., Rovero A. C., Saffi S. J., Saftoiu A., Salamida F., Salazar H., Saleh A., Salesa Greus F., Salina G., Sánchez F., Sanchez-Lucas P., Santos E., Santos E. M., Sarazin F., Sarkar B., Sarmento R., Sato R., Scarso C., Schauer M., Scherini V., Schieler H., Schiffer P., Schmidt D., Scholten O., Schoorlemmer H., Schovánek P., Schröder F. G., Schulz A., Schulz J., Schumacher J., Sciutto S. J., Segreto A., Settimo M., Shadkam A., Shellard R. C., Sidelnik I., Sigl G., Sima O., Śmiałkowski A., Šmída R., Snow G. R., Sommers P., Sorokin J., Squartini R., Srivastava Y. N., Stanca D., Stanič S., Stapleton J., Stasielak J., Stephan M., Stutz A., Suarez F., Suomijärvi T., Supanitsky A. D., Sutherland M. S., Swain J., Szadkowski Z., Taborda O. A., Tapia A., Tepe A., Theodoro V. M., Tiffenberg J., Timmermans C., Todero Peixoto C. J., Toma G., Tomankova L., Tomé B., Tonachini A., Torralba Elipe G., Torres Machado D., Travnicek P., Ulrich R., Unger M., Urban M., Valdés Galicia J. F., Valiño I., Valore L., van Aar G., van Bodegom P., van den Berg A. M., van Velzen S., van Vliet A., Varela E., Vargas Cárdenas B., Varner G., Vasquez R., Vázquez J. R., Vázquez R. A., Veberič D., Verzi V., Vicha J., Videla M., Villaseñor L., Vlcek B., Vorobiov S., Wahlberg H., Wainberg O., Walz D., Watson A. A., Weber M., Weidenhaupt K., Weindl A., Werner F., Widom A., Wiencke L., Wilczyński H., Winchen T., Wittkowski D., Wundheiler B., Wykes S., Yang L., Yapici T., Yushkov A., Zas E., Zavrtanik D., Zavrtanik M., Zepeda A., Zhu Y., Zimmermann B., Ziolkowski M., Zuccarello F., Aab, A., Abreu, P., Aglietta, M., Ahn, E. . J., Al Samarai, I., Albuquerque, I. . F. . M., Allekotte, I., Allison, P., Almela, A., Alvarez Castillo, J., Alvarez Muñiz, J., Alves Batista, R., Ambrosio, M., Aminaei, A., Anchordoqui, L., Andringa, S., Aramo, C., Aranda, V. . M., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Ave, M., Avenier, M., Avila, G., Awal, N., Badescu, A. . M., Barber, K. . B., Bäuml, J., Baus, C., Beatty, J. . J., Becker, K. . H., Bellido, J. . A., Berat, C., Bertaina, M. . E., Bertou, X., Biermann, P. . L., Billoir, P., Blaess, S. . G., Blanco, A., Blanco, M., Bleve, Carla, Blümer, H., Boháčová, M., Boncioli, D., Bonifazi, C., Borodai, N., Brack, J., Brancus, I., Bridgeman, A., Brogueira, P., Brown, W. . C., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero Mora, K. . S., Caccianiga, B., Caccianiga, L., Candusso, M., Caramete, L., Caruso, R., Castellina, A., Cataldi, G., Cazon, L., Cester, R., Chavez, A. . G., Chiavassa, A., Chinellato, J. . A., Chudoba, J., Cilmo, M., Clay, R. . W., Cocciolo, G., Colalillo, R., Coleman, A., Collica, L., Coluccia, MARIA RITA, Conceição, R., Contreras, F., Cooper, M. . J., Cordier, A., Coutu, S., Covault, C. . E., Cronin, J., Dallier, R., Daniel, B., Dasso, S., Daumiller, K., Dawson, B. . R., de Almeida, R. . M., de Jong, S. . J., De Mauro, G., de Mello Neto, J. . R. . T., DE MITRI, Ivan, de Oliveira, J., de Souza, V., del Peral, L., Deligny, O., Dembinski, H., Dhital, N., Di Giulio, C., Di Matteo, A., Diaz, J. . C., Díaz Castro, M. . L., Diogo, F., Dobrigkeit, C., Docters, W., D’Olivo, J. . C., Dorofeev, A., Dorosti Hasankiadeh, Q., Dova, M. . T., Ebr, J., Engel, R., Erdmann, M., Erfani, M., Escobar, C. . O., Espadanal, J., Etchegoyen, A., Falcke, H., Fang, K., Farrar, G., Fauth, A. . C., Fazzini, N., Ferguson, A. . P., Fernandes, M., Fick, B., Figueira, J. . M., Filevich, A., Filipčič, A., Fox, B. . D., Fratu, O., Freire, M. . M., Fuchs, B., Fujii, T., García, B., Garcia Pinto, D., Gate, F., Gemmeke, H., Gherghel Lascu, A., Ghia, P. . L., Giaccari, U., Giammarchi, M., Giller, M., Głas, D., Glaser, C., Glass, H., Golup, G., Gómez Berisso, M., Gómez Vitale, P. . F., González, N., Gookin, B., Gordon, J., Gorgi, A., Gorham, P., Gouffon, P., Griffith, N., Grillo, A. . F., Grubb, T. . D., Guardincerri, Y., Guarino, F., Guedes, G. . P., Hampel, M. . R., Hansen, P., Harari, D., Harrison, T. . A., Hartmann, S., Harton, J. . L., Haungs, A., Hebbeker, T., Heck, D., Heimann, P., Herve, A. . E., Hill, G. . C., Hojvat, C., Hollon, N., Holt, E., Homola, P., Hörandel, J. . R., Horvath, P., Hrabovský, M., Huber, D., Huege, T., Insolia, A., Isar, P. . G., Jandt, I., Jansen, S., Jarne, C., Johnsen, J. . A., Josebachuili, M., Kääpä, A., Kambeitz, O., Kampert, K. . H., Kasper, P., Katkov, I., Kégl, B., Keilhauer, B., Keivani, A., Kemp, E., Kieckhafer, R. . M., Klages, H. . O., Kleifges, M., Kleinfeller, J., Krause, R., Krohm, N., Krömer, O., Kuempel, D., Kunka, N., Lahurd, D., Latronico, L., Lauer, R., Lauscher, M., Lautridou, P., Le Coz, S., Lebrun, D., Lebrun, P., Leigui de Oliveira, M. . A., Letessier Selvon, A., Lhenry Yvon, I., Link, K., Lopes, L., López, R., López Casado, A., Louedec, K., Lu, L., Lucero, A., Malacari, M., Maldera, S., Mallamaci, M., Maller, J., Mandat, D., Mantsch, P., Mariazzi, A. . G., Marin, V., Mariş, I. . C., Marsella, Giovanni, Martello, Daniele, Martin, L., Martinez, H., Martínez Bravo, O., Martraire, D., Masías Meza, J. . J., Mathes, H. . J., Mathys, S., Matthews, J., Matthews, J. . A. . J., Matthiae, G., Maurel, D., Maurizio, D., Mayotte, E., Mazur, P. . O., Medina, C., Medina Tanco, G., Meissner, R., Mello, V. . B. . B., Melo, D., Menshikov, A., Messina, S., Meyhandan, R., Micheletti, M. . I., Middendorf, L., Minaya, I. . A., Miramonti, L., Mitrica, B., Molina Bueno, L., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Moura, C. . A., Muller, M. . A., Müller, G., Müller, S., Mussa, R., Navarra, G., Navarro, J. . L., Navas, S., Necesal, P., Nellen, L., Nelles, A., Neuser, J., Nguyen, P. . H., Niculescu Oglinzanu, M., Niechciol, M., Niemietz, L., Niggemann, T., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Ochilo, L., Oikonomou, F., Olinto, A., Pacheco, N., Pakk Selmi Dei, D., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Paul, T., Pech, M., Pȩkala, J., Pelayo, R., Pepe, I. . M., Perrone, Lorenzo, Petermann, E., Peters, C., Petrera, S., Petrov, Y., Phuntsok, J., Piegaia, R., Pierog, T., Pieroni, P., Pimenta, M., Pirronello, V., Platino, M., Plum, M., Porcelli, A., Porowski, C., Prado, R. . R., Privitera, P., Prouza, M., Purrello, V., Quel, E. . J., Querchfeld, S., Quinn, S., Rautenberg, J., Ravel, O., Ravignani, D., Revenu, B., Ridky, J., Riggi, S., Risse, M., Ristori, P., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Fernandez, G., Rodriguez Rojo, J., Rodríguez Frías, M. . D., Rogozin, D., Rosado, J., Roth, M., Roulet, E., Rovero, A. . C., Saffi, S. . J., Saftoiu, A., Salamida, F., Salazar, H., Saleh, A., Salesa Greus, F., Salina, G., Sánchez, F., Sanchez Lucas, P., Santos, E., Santos, E. . M., Sarazin, F., Sarkar, B., Sarmento, R., Sato, R., Scarso, C., Schauer, M., Scherini, Viviana, Schieler, H., Schiffer, P., Schmidt, D., Scholten, O., Schoorlemmer, H., Schovánek, P., Schröder, F. . G., Schulz, A., Schulz, J., Schumacher, J., Sciutto, S. . J., Segreto, A., Settimo, M., Shadkam, A., Shellard, R. . C., Sidelnik, I., Sigl, G., Sima, O., Śmiałkowski, A., Šmída, R., Snow, G. . R., Sommers, P., Sorokin, J., Squartini, R., Srivastava, Y. . N., Stanca, D., Stanič, S., Stapleton, J., Stasielak, J., Stephan, M., Stutz, A., Suarez, F., Suomijärvi, T., Supanitsky, A. . D., Sutherland, M. . S., Swain, J., Szadkowski, Z., Taborda, O. . A., Tapia, A., Tepe, A., Theodoro, V. . M., Tiffenberg, J., Timmermans, C., Todero Peixoto, C. . J., Toma, G., Tomankova, L., Tomé, B., Tonachini, A., Torralba Elipe, G., Torres Machado, D., Travnicek, P., Ulrich, R., Unger, M., Urban, M., Valdés Galicia, J. . F., Valiño, I., Valore, L., van Aar, G., van Bodegom, P., van den Berg, A. . M., van Velzen, S., van Vliet, A., Varela, E., Vargas Cárdenas, B., Varner, G., Vasquez, R., Vázquez, J. . R., Vázquez, R. . A., Veberič, D., Verzi, V., Vicha, J., Videla, M., Villaseñor, L., Vlcek, B., Vorobiov, S., Wahlberg, H., Wainberg, O., Walz, D., Watson, A. . A., Weber, M., Weidenhaupt, K., Weindl, A., Werner, F., Widom, A., Wiencke, L., Wilczyński, H., Winchen, T., Wittkowski, D., Wundheiler, B., Wykes, S., Yang, L., Yapici, T., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zepeda, A., Zhu, Y., Zimmermann, B., Ziolkowski, M., Zuccarello, F., Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), M., Ambrosio, Aramo, Carla, Buscemi, Mario, Cilmo, Marco, Colalillo, Roberta, Guarino, Fausto, Valore, Laura, The Pierre Auger, Collaboration, Research unit Astroparticle Physics, and Research unit Nuclear & Hadron Physics

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Cosmic-ray interactions, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, extensive atmospherical showers, muon density, muon number, Pierre Auger Observatory, cosmic radiation UHE, Hadronic interaction models, 7. Clean energy, Auger, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, Altitude, Settore FIS/05 - Astronomia e Astrofisica, Observatory, NERGY COSMIC-RAYS, DETECTOR, MODEL, Extensive air showers, cosmic radiation UHE, DETECTOR, Scaling, Cosmic rays, Zenith, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Pierre Auger Observatory, Muon, NERGY COSMIC-RAYS, Settore FIS/01 - Fisica Sperimentale, energy cosmic-rays, detector, model, Astrophysics::Instrumentation and Methods for Astrophysics, Física, [ PHYS.ASTR.HE ] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], ASTROFÍSICA, extensive atmospherical showers, muon number, MODEL, muon density, Experimental High Energy Physics, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Física nuclear, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the first hybrid measurement of the average muon number in air showers at ultrahigh energies, initiated by cosmic rays with zenith angles between 62° and 80°. The measurement is based on 174 hybrid events recorded simultaneously with the surface detector array and the fluorescence detector of the Pierre Auger Observatory. The muon number for each shower is derived by scaling a simulated reference profile of the lateral muon density distribution at the ground until it fits the data. A 1019eV shower with a zenith angle of 67°, which arrives at the surface detector array at an altitude of 1450 m above sea level, contains on average (2.68±0.04±0.48(sys))×107 muons with energies larger than 0.3 GeV. The logarithmic gain dlnNμ/dlnE of muons with increasing energy between 4×1018eV and 5×1019eV is measured to be (1.029±0.024±0.030(sys))., La lista completa de autores que integran el documento puede consultarse en el archivo, Instituto de Física La Plata

Published
2015

12. Calibration of the photometric method of heavy ion charge measurements in emulsion using a CCD camera

Author

B. Wilczynska, D. Kudzia, and Henryk Wilczyński

Subjects
Physics, Nuclear and High Energy Physics, Ccd camera, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Charge (physics), law.invention, Delta ray, Optics, Optical microscope, law, Emulsion, Calibration, Astrophysics::Solar and Stellar Astrophysics, Particle, Heavy ion, business, Instrumentation
Abstract

A previously developed method of heavy ion charge measurements in emulsion has been significantly improved. The charge measurements are based on analysis of photometric profiles of the particle tracks in emulsion. These profiles are obtained using a CCD camera mounted on an optical microscope. So far, the manual charge determination by delta ray counting had to be used for calibration of the photometric method. In this paper a complete procedure for calibration of the photometric method is shown, without resorting to the manual method.

Published
2002

13. Searches for Large-Scale Anisotropy in the Arrival Directions of Cosmic Rays Detected above Energy of $10^{19}$ eV at the Pierre Auger Observatory and the Telescope Array

Author

Telescope, Array, Pierre Auger Collaborations (Alexander Aab, Pedro, Abreu, Marco, Aglietta, Eun Joo Ahn, Imen Al Samarai, Ivone, Albuquerque, Ingomar, Allekotte, Jeff, Allen, Patrick, Allison, Alejandro, Almela, Jesus Alvarez Castillo, Jaime Alvarez Muñiz, Rafael Alves Batista, Michelangelo, Ambrosio, Amin, Aminaei, Luis, Anchordoqui, Sofia, Andringa, Carla, Aramo, Victor Manuel Aranda, Fernando, Arqueros, Hernán Gonzalo Asorey, Pedro, Assis, Julien, Aublin, Maximo, Ave, Michel, Avenier, Gualberto, Avila, Nafiun, Awal, Alina Mihaela Badescu, Barber, Kerri B., Julia, Bäuml, Colin, Baus, Jim, Beatty, Karl Heinz Becker, Bellido, Jose A., Corinne, Berat, Mario Edoardo Bertania, Xavier, Bertou, Peter, Biermann, Pierre, Billoir, Blaess, Simon G., Miguel, Blanco, Carla, Bleve, Hans, Blümer, Martina, Boháčová, Denise, Boncioli, Carla, Bonifazi, Raffaella, Bonino, Nataliia, Borodai, Jeffrey, Brack, Iliana, Brancus, Ariel, Bridgeman, Pedro, Brogueira, Brown, William C., Peter, Buchholz, Antonio, Bueno, Stijn, Buitink, Buscemi, Mario, Caballero Mora, Karen S., Barbara, Caccianiga, Lorenzo, Caccianiga, Marina, Candusso, Laurentiu, Caramete, Caruso, Rossella, Antonella, Castellina, Gabriella, Cataldi, Lorenzo, Cazon, Rosanna, Cester, Chavez, Alan G., Andrea, Chiavassa, Jose Augusto Chinellato, Jiri, Chudoba, Marco, Cilmo, Clay, Roger W., Giuseppe, Cocciolo, Roberta, Colalillo, Alan, Coleman, Laura, Collica, Maria Rita Coluccia, Ruben, Conceição, Fernando, Contreras, Cooper, Mathew J., Alain, Cordier, Stephane, Coutu, Corbin, Covault, James, Cronin, Alex, Curutiu, Richard, Dallier, Bruno, Daniel, Sergio, Dasso, Kai, Daumiller, Dawson, Bruce R., de Almeida, Rogerio M., Manlio De Domenico, de Jong, Sijbrand J., Joao de Mello Neto, Ivan De Mitri, Jaime de Oliveira, Vitor de Souza, Luis del Peral, Olivier, Deligny, Hans, Dembinski, Niraj, Dhital, Claudio Di Giulio, Armando Di Matteo, Johana Chirinos Diaz, Mary Lucia Díaz Castro, Francisco, Diogo, Carola, Dobrigkeit, Wendy, Docters, Juan Carlos D'Olivo, Alexei, Dorofeev, Qader Dorosti Hasankiadeh, Maria Teresa Dova, Jan, Ebr, Ralph, Engel, Martin, Erdmann, Mona, Erfani, Escobar, Carlos O., Joao, Espadanal, Alberto, Etchegoyen, Pedro Facal San Luis, Heino, Falcke, Fang, Ke, Glennys, Farrar, Anderson, Fauth, Norberto, Fazzini, Ferguson, Andrew P., Mateus, Fernandes, Brian, Fick, Juan Manuel Figueira, Alberto, Filevich, Andrej, Filipčič, Brendan, Fox, Octavian, Fratu, Uwe, Fröhlich, Benjamin, Fuchs, Toshihiro, Fujii, Romain, Gaior, Beatriz, García, Sayri Tupac Garcia Roca, Diego Garcia Gamez, Diego Garcia Pinto, Gianpaolo, Garilli, Alberto Gascon Bravo, Florian, Gate, Hartmut, Gemmeke, Piera Luisa Ghia, Ugo, Giaccari, Marco, Giammarchi, Maria, Giller, Christian, Glaser, Henry, Glass, Mariano Gómez Berisso, Gómez Vitale, Primo F., Patrícia, Gonçalves, Gonzalez, Javier G., Nicolás, González, Ben, Gookin, Jacob, Gordon, Alessio, Gorgi, Peter, Gorham, Philippe, Gouffon, Stefan, Grebe, Nathan, Griffith, Aurelio, Grillo, Grubb, Trent D., Fausto, Guarino, Germano, Guedes, Matías Rolf Hampel, Patricia, Hansen, Diego, Harari, Harrison, Thomas A., Sebastian, Hartmann, John, Harton, Andreas, Haungs, Thomas, Hebbeker, Dieter, Heck, Philipp, Heimann, Herve, Alexander E., Hill, Gary C., Carlos, Hojvat, Nicholas, Hollon, Ewa, Holt, Piotr, Homola, Jörg, Hörandel, Pavel, Horvath, Miroslav, Hrabovský, Daniel, Huber, Tim, Huege, Antonio, Insolia, Paula Gina Isar, Ingolf, Jandt, Stefan, Jansen, Cecilia, Jarne, Mariela, Josebachuili, Alex, Kääpä, Olga, Kambeitz, Karl Heinz Kampert, Peter, Kasper, Igor, Katkov, Balazs, Kégl, Bianca, Keilhauer, Azadeh, Keivani, Ernesto, Kemp, Roger, Kieckhafer, Hans, Klages, Matthias, Kleifges, Jonny, Kleinfeller, Raphael, Krause, Nicole, Krohm, Oliver, Krömer, Daniel Kruppke Hansen, Daniel, Kuempel, Norbert, Kunka, Danielle, Lahurd, Luca, Latronico, Robert, Lauer, Markus, Lauscher, Pascal, Lautridou, Sandra Le Coz, Milton, Leão, Didier, Lebrun, Paul, Lebrun, Marcelo Augusto Leigui de Oliveira, Antoine Letessier Selvon, Isabelle Lhenry Yvon, Katrin, Link, Rebeca, López, Angeles Lopez Agüera, Karim, Louedec, Julio Lozano Bahilo, Lu, Lu, Agustin, Lucero, Marianne, Ludwig, Max, Malacari, Simone, Maldera, Manuela, Mallamaci, Jennifer, Maller, Dusan, Mandat, Paul, Mantsch, Analisa, Mariazzi, Vincent, Marin, Ioana, Mariş, Giovanni, Marsella, Daniele, Martello, Lilian, Martin, Humberto, Martinez, Oscar Martínez Bravo, Diane, Martraire, Jimmy Masías Meza, Hermann Josef Mathes, Sebastian, Mathys, James, Matthews, John, Matthews, Giorgio, Matthiae, Detlef, Maurel, Daniela, Maurizio, Eric, Mayotte, Peter, Mazur, Carlos, Medina, Gustavo Medina Tanco, Rebecca, Meissner, Maximilien, Melissas, Diego, Melo, Alexander, Menshikov, Stefano, Messina, Rishi, Meyhandan, Saša, Mićanović, Maria Isabel Micheletti, Lukas, Middendorf, Minaya, Ignacio A., Lino, Miramonti, Bogdan, Mitrica, Laura Molina Bueno, Silvia, Mollerach, Maria, Monasor, Delphine Monnier Ragaigne, François, Montanet, Carlo, Morello, Miguel, Mostafá, Moura, Celio A., Marcio Aparecido Muller, Gero, Müller, Sarah, Müller, Moritz, Münchmeyer, Roberto, Mussa, Gianni, Navarra, Sergio, Navas, Petr, Necesal, Lukas, Nellen, Anna, Nelles, Jens, Neuser, Nguyen, Phong H., Marcus, Niechciol, Lukas, Niemietz, Tim, Niggemann, Dave, Nitz, Dalibor, Nosek, Vladimir, Novotny, Lyberis, Nožka, Livingstone, Ochilo, Angela, Olinto, Micael, Oliveira, Noelia, Pacheco, Daniel Pakk Selmi Dei, Miroslav, Palatka, Juan, Pallotta, Nunzia, Palmieri, Philipp, Papenbreer, Gonzalo, Parente, Alejandra, Parra, Thomas, Paul, Miroslav, Pech, Jan, Pękala, Rodrigo, Pelayo, Iuri, Pepe, Lorenzo, Perrone, Emily, Petermann, Christine, Peters, Sergio, Petrera, Yevgeniy, Petrov, Jamyang, Phuntsok, Ricardo, Piegaia, Tanguy, Pierog, Pablo, Pieroni, Mário, Pimenta, Valerio, Pirronello, Manuel, Platino, Matthias, Plum, Alessio, Porcelli, Czeslaw, Porowski, Raul Ribeiro Prado, Paolo, Privitera, Michael, Prouza, Victor, Purrello, Quel, Eduardo J., Sven, Querchfeld, Sean, Quinn, Julian, Rautenberg, Olivier, Ravel, Diego, Ravignani, Benoît, Revenu, Jan, Ridky, Simone, Riggi, Markus, Risse, Pablo, Ristori, Vincenzo, Rizi, Washington Rodrigues de Carvalho, Iago Rodriguez Cabo, Gonzalo Rodriguez Fernandez, Jorge Rubén Rodriguez Rojo, Maria Dolores Rodríguez Frías, Dmytro, Rogozin, Germán, Ros, Jaime, Rosado, Tomas, Rossler, Markus, Roth, Esteban, Roulet, Adrian, Rovero, Saffi, Steven J., Alexandra, Saftoiu, Francesco, Salamida, Humberto, Salazar, Ahmed, Saleh, Francisco Salesa Greus, Gaetano, Salina, Federico, Sánchez, Patricia Sanchez Lucas, Santo, Catarina E., Edivaldo Moura Santos, Eva, Santos, Fred, Sarazin, Biswaijt, Sarkar, Raul, Sarmento, Ricardo, Sato, Nils, Scharf, Viviana, Scherini, Harald, Schieler, Peter, Schiffer, David, Schmidt, Olaf, Scholten, Harm, Schoorlemmer, Petr, Schovánek, Alexander, Schulz, Johannes, Schulz, Johannes, Schumacher, Sergio, Sciutto, Alberto, Segreto, Mariangela, Settimo, Amir, Shadkam, Shellard, Ronald C., Iván, Sidelnik, Guenter, Sigl, Octavian, Sima, Andrzej, Śmiałkowski, Radomir, Šmída, Gregory, Snow, Paul, Sommers, Sorokin, J., Ruben, Squartini, Srivastava, Yogendra N., Samo, Stanič, James, Stapleton, Jaroslaw, Stasielak, Maurice, Stephan, Anne, Stutz, Federico, Suarez, Tiina, Suomijärvi, Daniel Supanitsky, A., Michael, Sutherland, John, Swain, Zbigniew, Szadkowski, Marek, Szuba, Oscar Alejandro Taborda, Alex, Tapia, Mathieu, Tartare, Andreas, Tepe, Vanessa Menezes Theodoro, Charles, Timmermans, Todero Peixoto, Carlos J., Gabriel, Toma, Lenka, Tomankova, Bernardo, Tomé, Aurelio, Tonachini, Guillermo Torralba Elipe, Diego Torres Machado, Petr, Travnicek, Enrica, Trovato, Matias, Tueros, Ralf, Ulrich, Michael, Unger, Martin, Urban, Valdés Galicia, Jose F., Ines, Valiño, Laura, Valore, Guus van Aar, Patrick van Bodegom, van den Berg, Ad M., Sjoert van Velzen, Arjen van Vliet, Enrique, Varela, Bernardo Vargas Cárdenas, Gary, Varner, Vázquez, Jose R., Ricardo, Vázquez, Darko, Veberič, Valerio, Verzi, Jakub, Vicha, Mariela, Videla, Luis, Villaseñor, Brian, Vlcek, Serguei, Vorobiov, Hernan, Wahlberg, Oscar, Wainberg, David, Walz, Alan, Watson, Marc, Weber, Klaus, Weidenhaupt, Andreas, Weindl, Felix, Werner, Allan, Widom, Lawrence, Wiencke, Barbara, Wilczyńska, Henryk, Wilczyński, Martin, Will, Christopher, Williams, Tobias, Winchen, David, Wittkowski, Brian, Wundheiler, Sarka, Wykes, Tokonatsu, Yamamoto, Tolga, Yapici, Guofeng, Yuan, Alexey, Yushkov, Bruno, Zamorano, Enrique, Zas, Danilo, Zavrtanik, Marko, Zavrtanik, Ingyin, Zaw, Arnulfo, Zepeda, Jing, Zhou, Yue, Zhu, Marcelo Zimbres Silva, Michael, Ziolkowski, Francesca, Zuccarello, Rasha, Abbasi, Michihiko, Abe, Tareq Abu Zayyad, Monica, Allen, Robyn, Anderson, Ryuji, Azuma, Elliott, Barcikowski, Belz, John W., Bergman, Douglas R., Samuel Adam Blake, Robert, Cady, Min Jung Chae, Byung Gu Cheon, Junsei, Chiba, Michiyuki, Chikawa, Woo Ram Cho, Masaki, Fukushima, Takashi, Goto, William, Hanlon, Yoshio, Hayashi, Naoaki, Hayashida, Kinya, Hibino, Ken, Honda, Daisuke, Ikeda, Naoya, Inoue, Takaaki, Ishii, Rie, Ishimori, Hideo Ito (Utah, U., Riken, Dmitri, Ivanov, Jui, Charles C. H., Kenichi, Kadota, Fumio, Kakimoto, Oleg, Kalashev, Katsuaki, Kasahara, Hideyuki, Kawai, Saburo, Kawakami, Shingo, Kawana, Kazumasa, Kawata, Eiji, Kido, Hang Bae Kim, Ji Hee Kim, Ji Hyun Kim, Seiji, Kitamura, Yuki, Kitamura, Vadim, Kuzmin, Young Joon Kwon, Jian, Lan, Sun In Lim, Jon Paul Lundquist, Kazuhiro, Machida, Kai, Martens, Takeshi, Matsuda, Toshio, Matsuyama, Matthews, John N., Mayuko, Minamino, Keijiro, Mukai, Isaac, Myers, Keisuke, Nagasawa, Shigehiro, Nagataki, Toru, Nakamura, Toshiyuki, Nonaka, Asuka, Nozato, Shoichi, Ogio, Jun, Ogura, Munehiro, Ohnishi, Hideyuki, Ohoka, Kaoru, Oki, Takeshi, Okuda, Masaomi, Ono, Akitoshi, Oshima, Shunsuke, Ozawa, Park, Il H., Pshirkov, Maxim S., Douglas Chase Rodriguez, Grigory, Rubtsov, Dongsu, Ryu, Hiroyuki, Sagawa, Nobuyuki, Sakurai, Sampson, Amanda L., Scott, Lauren M., Priti Dhanesh Shah, Fumiya, Shibata, Tatsunobu, Shibata, Hideaki, Shimodaira, Bok Kyun Shin, Smith, Jeremy D., Pierre, Sokolsky, Wayne Springer, R., Benjamin Taylor Stokes, Stratton, Sean R., Thomas, Stroman, Takumi, Suzawa, Mai, Takamura, Masahiro, Takeda, Ryuji, Takeishi, Akimichi, Taketa, Masato, Takita, Yuichiro, Tameda, Hideki, Tanaka, Koichi, Tanaka, Manobu, Tanaka, Thomas, Stanton B., Thomson, Gordon B., Peter, Tinyakov, Igor, Tkachev, Hisao, Tokuno, Takayuki, Tomida, Sergey, Troitsky, Yoshiki, Tsunesada, Kazuki, Tsutsumi, Yukio, Uchihori, Shigeharu, Udo, Federico, Urban, Gina, Vasiloff, Tiffany, Wong, Hiroshi, Yamaoka, Katsuya, Yamazaki, Jongmann, Yang, Kenta, Yashiro, Shigeru, Yoshida, Hisashi, Yoshii, Rhett, Zollinger, Zachary, Zundel, Shogo, Konishi, Shingo, Wachi, Yoshiki, Nishimoto, Heungsu, Shin, Mai, Tsujimoto, Tomoya, Matsuhira, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Unité Scientifique de la Station de Nançay (USN), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), PIERRE AUGER, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), 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), 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), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), A., Aab, P., Abreu, M., Aglietta, E. J., Ahn, I., Al Samarai, I. F. M., Albuquerque, I., Allekotte, J., Allen, P., Allison, A., Almela, J., Alvarez Castillo, J., Alvarez Mu?iz, R., Alves Batista, M., Ambrosio, A., Aminaei, L., Anchordoqui, S., Andringa, Aramo, Carla, F., Arquero, H., Asorey, P., Assi, J., Aublin, M., Ave, M., Avenier, G., Avila, A. M., Badescu, K. B., Barber, J., B?uml, C., Bau, J. J., Beatty, K. H., Becker, J. A., Bellido, C., Berat, M. E., Bertaina, X., Bertou, P. L., Biermann, P., Billoir, M., Blanco, C., Bleve, H., Bl?mer, M., Boh??ov?, D., Boncioli, C., Bonifazi, R., Bonino, N., Borodai, J., Brack, I., Brancu, P., Brogueira, W. C., Brown, P., Buchholz, A., Bueno, S., Buitink, Buscemi, Mario, K. S., Caballero Mora, B., Caccianiga, L., Caccianiga, M., Candusso, L., Caramete, R., Caruso, A., Castellina, G., Cataldi, L., Cazon, R., Cester, A. G., Chavez, A., Chiavassa, J. A., Chinellato, J., Chudoba, Cilmo, Marco, R. W., Clay, G., Cocciolo, Colalillo, Roberta, A., Coleman, L., Collica, M. R., Coluccia, R., Concei??o, F., Contrera, M. J., Cooper, A., Cordier, S., Coutu, C. E., Covault, J., Cronin, A., Curutiu, R., Dallier, B., Daniel, S., Dasso, K., Daumiller, B. R., Dawson, R. M., de Almeida, M., De Domenico, S. J., de Jong, J. R. T., de Mello Neto, I., De Mitri, J., de Oliveira, V., de Souza, L., del Peral, O., Deligny, H., Dembinski, N., Dhital, C., Di Giulio, A., Di Matteo, J. C., Diaz, M. L., D?az Castro, F., Diogo, C., Dobrigkeit, W., Docter, J. C., D'Olivo, A., Dorofeev, Q., Dorosti Hasankiadeh, M. T., Dova, J., Ebr, R., Engel, M., Erdmann, M., Erfani, C. O., Escobar, J., Espadanal, A., Etchegoyen, P., Facal San Lui, H., Falcke, K., Fang, G., Farrar, A. C., Fauth, N., Fazzini, A. P., Ferguson, M., Fernande, B., Fick, J. M., Figueira, A., Filevich, A., Filip?i?, B. D., Fox, O., Fratu, U., Fr?hlich, B., Fuch, T., Fuji, R., Gaior, B., Garc?a, S. T., Garcia Roca, D., Garcia Gamez, D., Garcia Pinto, G., Garilli, A., Gascon Bravo, F., Gate, H., Gemmeke, P. L., Ghia, U., Giaccari, M., Giammarchi, M., Giller, C., Glaser, H., Gla, M., G?mez Berisso, P. F., G?mez Vitale, P., Gon?alve, J. G., Gonzalez, N., Gonz?lez, B., Gookin, A., Gorgi, P., Gorham, P., Gouffon, S., Grebe, N., Griffith, A. F., Grillo, T. D., Grubb, Y., Guardincerri, Guarino, Fausto, G. P., Guede, M. R., Hampel, P., Hansen, D., Harari, T. A., Harrison, S., Hartmann, J. L., Harton, A., Haung, T., Hebbeker, D., Heck, P., Heimann, A. E., Herve, G. C., Hill, C., Hojvat, N., Hollon, E., Holt, P., Homola, J. R., H?randel, P., Horvath, M., Hrabovsk?, D., Huber, T., Huege, A., Insolia, P. G., Isar, K., Islo, I., Jandt, S., Jansen, C., Jarne, M., Josebachuili, A., K??p?, O., Kambeitz, K. H., Kampert, P., Kasper, I., Katkov, B., K?gl, B., Keilhauer, A., Keivani, E., Kemp, R. M., Kieckhafer, H. O., Klage, M., Kleifge, J., Kleinfeller, R., Krause, N., Krohm, O., Kr?mer, D., Kruppke Hansen, D., Kuempel, N., Kunka, G., La Rosa, D., Lahurd, L., Latronico, R., Lauer, M., Lauscher, P., Lautridou, S., Le Coz, M. S. A. B., Le?o, D., Lebrun, P., Lebrun, M. A., Leigui de Oliveira, A., Letessier Selvon, I., Lhenry Yvon, K., Link, R., L?pez, A., Lopez Ag?era, K., Louedec, J., Lozano Bahilo, L., Lu, A., Lucero, M., Ludwig, M. C., Maccarone, M., Malacari, S., Maldera, M., Mallamaci, J., Maller, D., Mandat, P., Mantsch, A. G., Mariazzi, V., Marin, I. C., Mari?, G., Marsella, D., Martello, L., Martin, H., Martinez, O., Mart?nez Bravo, D., Martraire, J. J., Mas?as Meza, H. J., Mathe, S., Mathy, J. A. J., Matthew, J., Matthew, G., Matthiae, D., Maurel, D., Maurizio, E., Mayotte, P. O., Mazur, C., Medina, G., Medina Tanco, M., Melissa, D., Melo, E., Menichetti, A., Menshikov, S., Messina, R., Meyhandan, S., Mi?anovi?, M. I., Micheletti, L., Middendorf, I. 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Horvath, M. Hrabovský, D. Huber, T. Huege, A. Insolia, P. G. Isar, K. Islo, I. Jandt, S. Jansen, C. Jarne, M. Josebachuili, A. Kääpä, O. Kambeitz, K. H. Kampert, P. Kasper, I. Katkov, B. Kégl, B. Keilhauer, A. Keivani, E. Kemp, R. M. Kieckhafer, H. O. Klage, M. Kleifge, J. Kleinfeller, R. Krause, N. Krohm, O. Krömer, D. Kruppke-Hansen, D. Kuempel, N. Kunka, G. L. Rosa, D. LaHurd, L. Latronico, R. Lauer, M. Lauscher, P. Lautridou, S. L. Coz, M. S. A., D. Lebrun, P. Lebrun, M. A. Leigui, A. Letessier-Selvon, I. Lhenry-Yvon, K. Link, R. López, A. L. Agüera, K. Louedec, J. L. Bahilo, L. Lu, A. Lucero, M. Ludwig, M. C. Maccarone, M. Malacari, S. Maldera, M. Mallamaci, J. Maller, D. Mandat, P. Mantsch, A. G. Mariazzi, V. Marin, I. C. Mariş, G. Marsella, D. Martello, L. Martin, H. Martinez, O. M. Bravo, D. Martraire, J. J. Masía, H. J. Mathe, S. Mathy, J. A. J., J. Matthew, G. Matthiae, D. Maurel, D. Maurizio, E. Mayotte, P. O. Mazur, C. Medina, G. Medina-Tanco, M. Melissa, D. Melo, E. Menichetti, A. Menshikov, S. Messina, R. Meyhandan, S. Mićanović, M. I. Micheletti, L. Middendorf, I. A. Minaya, L. Miramonti, B. Mitrica, L. Molina-Bueno, S. Mollerach, M. Monasor, D. M. Ragaigne, F. Montanet, C. Morello, M. Mostafá, C. A. Moura, M. A. Muller, G. Müller, M. Münchmeyer, R. Mussa, G. Navarra, S. Nava, P. Necesal, L. Nellen, A. Nelle, J. Neuser, M. Niechciol, L. Niemietz, T. Niggemann, D. Nitz, D. Nosek, V. Novotny, L. Nožka, L. Ochilo, A. Olinto, M. Oliveira, N. Pacheco, D. P. Selmi-Dei, M. Palatka, J. Pallotta, N. Palmieri, P. Papenbreer, G. Parente, A. Parra, T. Paul, M. Pech, J. Pękala, R. Pelayo, I. M. Pepe, L. Perrone, R. Pesce, E. Petermann, C. Peter, S. Petrera, A. Petrolini, Y. Petrov, J. Phuntsok, R. Piegaia, T. Pierog, P. Pieroni, M. Pimenta, V. Pirronello, M. Platino, M. Plum, A. Porcelli, C. Porowski, R. R. Prado, P. Privitera, M. Prouza, V. Purrello, E. J. Quel, S. Querchfeld, S. Quinn, J. Rautenberg, O. Ravel, D. Ravignani, B. Revenu, J. Ridky, S. 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Elipe, D. T. Machado, P. Travnicek, E. Trovato, M. Tuero, R. Ulrich, M. Unger, M. Urban, J. F. Valdé, I. Valiño, L. Valore, G. v. Aar, A. M. van, S. v. Velzen, A. v. Vliet, E. Varela, B. V. Cárdena, G. Varner, J. R. Vázquez, R. A. Vázquez, D. Veberič, V. Verzi, J. Vicha, M. Videla, L. Villaseñor, B. Vlcek, S. Vorobiov, H. Wahlberg, O. Wainberg, D. Walz, A. A. Watson, M. Weber, K. Weidenhaupt, A. Weindl, F. Werner, A. Widom, L. Wiencke, B. Wilczyńska, H. Wilczyński, M. Will, C. William, T. Winchen, D. Wittkowski, B. Wundheiler, S. Wyke, T. Yamamoto, T. Yapici, P. Younk, G. Yuan, A. Yushkov, B. Zamorano, E. Za, D. Zavrtanik, M. Zavrtanik, I. Zaw, A. Zepeda, J. Zhou, Y. Zhu, M. Z. Silva, M. Ziolkowski, T. P. Auger, R. U. Abbasi, M. Abe, T. Abu-Zayyad, M. Allen, R. Anderson, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, R. Cady, M. J. Chae, B. G. Cheon, J. Chiba, M. Chikawa, W. R. Cho, T. Fujii, M. Fukushima, T. Goto, W. Hanlon, Y. Hayashi, N. Hayashida, K. Hibino, K. Honda, D. Ikeda, N. Inoue, T. Ishii, R. Ishimori, H. Ito, D. Ivanov, C. C. H., K. Kadota, F. Kakimoto, O. Kalashev, K. Kasahara, H. Kawai, S. Kawakami, S. Kawana, K. Kawata, E. Kido, H. B. Kim, J. H. Kim, S. Kitamura, Y. Kitamura, V. Kuzmin, Y. J. Kwon, J. Lan, S. I. Lim, J. P. Lundquist, K. Machida, K. Marten, T. Matsuda, T. Matsuyama, J. N. Matthew, M. Minamino, K. Mukai, I. Myer, K. Nagasawa, S. Nagataki, T. Nakamura, T. Nonaka, A. Nozato, S. Ogio, J. Ogura, M. Ohnishi, H. Ohoka, K. Oki, T. Okuda, M. Ono, A. Oshima, S. Ozawa, I. H. Park, M. S. Pshirkov, D. C. Rodriguez, G. Rubtsov, D. Ryu, H. Sagawa, N. Sakurai, A. L. Sampson, L. M. Scott, P. D. Shah, F. Shibata, T. Shibata, H. Shimodaira, B. K. Shin, J. D. Smith, P. Sokolsky, R. W. Springer, B. T. Stoke, S. R. Stratton, T. A. Stroman, T. Suzawa, M. Takamura, M. Takeda, R. Takeishi, A. Taketa, M. Takita, Y. Tameda, H. Tanaka, K. Tanaka, M. Tanaka, S. B. Thoma, G. B. Thomson, P. Tinyakov, I. Tkachev, H. Tokuno, T. Tomida, S. Troitsky, Y. Tsunesada, K. Tsutsumi, Y. Uchihori, S. Udo, F. Urban, G. Vasiloff, T. Wong, R. Yamane, H. Yamaoka, K. Yamazaki, J. Yang, K. Yashiro, Y. Yoneda, S. Yoshida, H. Yoshii, R. Zollinger, Z. Zundel, T. T. Array, and Research unit Astroparticle Physics

Subjects
Ciencias Físicas, Astronomy, Rays, Astrophysics, Astroparticle physics, Cosmic rays, 01 natural sciences, law.invention, Pierre, law, Anisotropy, Telescope, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, [PHYS]Physics [physics], Energy, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::Instrumentation and Methods for Astrophysics, astroparticle physic, Radiación cósmica, Auger, Cosmic, Arrival, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, CIENCIAS NATURALES Y EXACTAS, High, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, SURFACE DETECTOR, ICECUBE, AIR-SHOWER ARRAY, Directions, cosmic rays, 0103 physical sciences, Instrumentation and Methods for Astrophysics (astro-ph.IM), Ciencias Exactas, Pierre Auger Observatory, SPECTRUM, 010308 nuclear & particles physics, Array, Spectral density, Spherical harmonics, Física, Astronomy and Astrophysics, ASTROFÍSICA, Ultra, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Astronomía, Dipole, RESOLUTION, Space and Planetary Science, Experimental High Energy Physics, Quadrupole, Observatory, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

Spherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining data from observatories located in both the northern and southern hemispheres. To this end, a joint analysis using data recorded at the Telescope Array and the Pierre Auger Observatory above 1019 eV is presented in this work. The resulting multipolar expansion of the flux of cosmic rays allows us to perform a series of anisotropy searches, and in particular to report on the angular power spectrum of cosmic rays above 1019 eV. No significant deviation from isotropic expectations is found throughout the analyses performed. Upper limits on the amplitudes of the dipole and quadrupole moments are derived as a function of the direction in the sky, varying between 7% and 13% for the dipole and between 7% and 10% for a symmetric quadrupole., Facultad de Ciencias Exactas

Published
2014

14. Fragmentation of nuclei as a function of centrality of collision in interactions of gold projectiles at 10.6 A GeV

Author

Adam Trzupek, A. Dąbrowska, R. Holynski, M. Szarska, W. Wolter, B. Wilczynska, Barbara Wosiek, Krzysztof Woźniak, Henryk Wilczyński, and Andrzej Olszewski

Subjects
Physics, Nuclear and High Energy Physics, Hydrogen, Projectile, Nuclear Theory, chemistry.chemical_element, Collision, Nuclear physics, medicine.anatomical_structure, chemistry, Fragmentation (mass spectrometry), medicine, Atomic physics, Nuclear Experiment, Centrality, Nucleus
Abstract

We have studied the fragmentation of light (C/N/O) and heavy (Ag/Br) nuclei of emulsion in collisions with gold projectiles at 10.6 A GeV and the fragmentation of these gold nuclei in collisions with hydrogen, (C/N/O) and (Ag/Br) nuclei. The analysis was restricted to the investigation of the number of fragments and in some cases the total charge of fragments as a function of the centrality of collisions with nuclei of different masses. We observe a decrease in the number of target fragments with increasing centrality for interactions of projectiles with masses comparable or greater than the mass of the target nucleus. As the collision becomes more central a significant number of participating protons from the target nucleus get enough momentum to become relativistic due to intranuclear interactions. These results have been compared with the predictions of the RQMD model.

Published
2001

15. Measurement of charge of heavy ions in emulsion using a CCD camera

Author

P. Deines-Jones, K. Sengupta, C. J. Waddington, Adam Trzupek, D. Kudzia, A. Dabrowska, Henryk Wilczyński, J. P. Wefel, B. S. Nilsen, M. Szarska, Andrzej Olszewski, W. Wolter, Michael Cherry, Krzysztof Woźniak, Barbara Wosiek, B. Wilczynska, and R. Holynski

Subjects
Physics, Nuclear and High Energy Physics, Microscope, Track (disk drive), chemistry.chemical_element, law.invention, Ion, Delta ray, chemistry, law, Emulsion, Track geometry, Atomic physics, Nuclear Experiment, Instrumentation, Beam (structure), Helium
Abstract

A system has been developed for semi-automated determination of the charges of heavy ions recorded in nuclear emulsions. The profiles of various heavy ion tracks in emulsion, both accelerator beam ions and fragments of heavy projectiles, were obtained with a CCD camera mounted on a microscope. The dependence of track profiles on illumination, emulsion grain size and density, background in emulsion, and track geometry was analyzed. Charges of the fragments of heavy projectiles were estimated independently by the delta ray counting method. A calibration of both width and height of track profiles against ion charges was made with ions of known charges ranging from helium to gold nuclei.

Published
1999

16. Cosmic‐Ray Proton and Helium Spectra: Results from the JACEE Experiment

Author

B. S. Nilsen, E. D. Olson, S. Dake, K. Asakimori, H. Yokomi, K. H. Moon, J. H. Derrickson, K. Chevli, T. H. Burnett, R. Holynski, H. Oda, F. E. Roberts, M. Kobayashi, E. Zager, J. Iwai, Osamu Miyamura, Michael Cherry, J. J. Lord, Takayoshi Hayashi, John C. Gregory, W. F. Fountain, T. Tominaga, K. Sengupta, Henryk Wilczyński, T. Shiina, Thomas A. Parnell, W. Wolter, M. Fuki, M. J. Christ, B. Wilczynska, T. Sugitate, A. Iyono, John W. Watts, J. Johnson, J. P. Wefel, S. C. Strausz, T. Ogata, R. J. Wilkes, and Yoshiyuki Takahashi

Subjects
Physics, Range (particle radiation), Proton, Hydrogen, chemistry.chemical_element, Astronomy and Astrophysics, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Spectral line, Supernova, chemistry, Space and Planetary Science, Astrophysics::Galaxy Astrophysics, Helium
Abstract

Measurements of the cosmic-ray hydrogen and helium spectra at energies from 20 to 800 TeV are presented. The experiments were performed on a series of twelve balloon flights, including several long duration Australia to South America and Antarctic circumpolar flights. No clear evidence is seen for a spectral break. Both the hydrogen and the helium spectra are consistent with power laws over the entire energy range, with integral spectral indices 1.80 ± 0.04 and 1.68 -->+ 0.04−0.06 for the protons and helium, respectively. The results are fully consistent with expectations based on supernova shock acceleration coupled with a leaky box model of propagation through the Galaxy.

Published
1998

17. Comparison of particle production in collisions with the VENUS and FRITIOF models

Author

R. Holynski, D. Kudzia, B. S. Nilsen, Andrzej Olszewski, W. Wolter, M. Szarska, B. Wilczynska, J. P. Wefel, Adam Trzupek, A. Dabrowska, Henryk Wilczyński, Krzysztof Woźniak, Barbara Wosiek, P. Deines-Jones, and C. J. Waddington

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, biology, Charge (physics), Venus, biology.organism_classification, Charged particle, Ion, Nuclear physics, Pseudorapidity, Particle, Nuclear Experiment, Nucleon
Abstract

Data on multiparticle production in interactions of 158 GeV/nucleon lead ions with the heavy nuclei in emulsions (Ag,Br) are compared with the predictions of the VENUS and FRITIOF models. It is found that total multiplicities of produced charged particles are reasonably well reproduced by both models. On the other hand, discrepancies between the data and the predictions are observed for the forward charge and pseudorapidity distributions. Furthermore, dynamical fluctuations, revealed in the data by application of the method of factorial moments, are absent from the model simulations. The dynamical fluctuations observed in the data can be at least partly due to Bose-Einstein correlations.

Published
1998

18. Automated track recognition and event reconstruction in nuclear emulsion

Author

Barbara Wosiek, C. J. Waddington, Michael Cherry, K. Sengupta, A. Aranas, Henryk Wilczyński, B. S. Nilsen, J. Dugas, D. Kudzia, P. Deines-Jones, B. Wilczynska, and J. P. Wefel

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Microscope, business.industry, Track (disk drive), Image processing, Charged particle, law.invention, Nuclear physics, law, Computer vision, Nuclear emulsion, Artificial intelligence, Sensitivity (control systems), business, Instrumentation, Event reconstruction
Abstract

The major advantages of nuclear emulsion for detecting charged particles are its submicron position resolution and sensitivity to minimum ionizing particles. These must be balanced, however, against the difficult manual microscope measurement by skilled observers required for the analysis. We have developed an automated system to acquire and analyze the microscope images from emulsion chambers. Each emulsion plate is analyzed independently, allowing coincidence techniques to be used in order to reject back- ground and estimate error rates. The system has been used to analyze a sample of high-multiplicity Pb-Pb interactions (charged particle multiplicities approx. 1100) produced by the 158 GeV/c per nucleon Pb-208 beam at CERN. Automatically reconstructed track lists agree with our best manual measurements to 3%. We describe the image analysis and track reconstruction techniques, and discuss the measurement and reconstruction uncertainties.

Published
1997

19. Point spread function due to multiple scattering of light in the atmosphere

Author

Jan Pękala and Henryk Wilczyński

Subjects
Physics, Point spread function, Nuclear and High Energy Physics, business.industry, Point source, Attenuation, Monte Carlo method, Diffuse sky radiation, FOS: Physical sciences, Signal, Light scattering, Air shower, Optics, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

The atmospheric scattering of light has a significant influence on the results of optical observations of air showers. It causes attenuation of direct light from the shower, but also contributes a delayed signal to the observed light. The scattering of light therefore should be accounted for, both in simulations of air shower detection and reconstruction of observed events. In this work a Monte Carlo simulation of multiple scattering of light has been used to determine the contribution of the scattered light in observations of a point source of light. Results of the simulations and a parameterization of the angular distribution of the scattered light contribution to the observed signal (the point spread function) are presented.

Published
2013
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20. Radar reflection off extensive air showers

Author

Jaroslaw Stasielak, M. Riegel, Marc Weber, Harald Schieler, Hans Klages, A. Chiavassa, Julian Rautenberg, M. E. Bertaina, M. Ludwig, P. Neunteufel, S. Baur, Radomir Smida, Karl-Heinz Kampert, Francesco Salamida, J. Wochele, J. Pekala, Henryk Wilczyński, O. Krömer, J. Blümer, M. Roth, Ralph Engel, Tim Huege, F. Werner, Andreas Haungs, Matthias Kleifges, S. Mathys, and Michael Unger

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Acoustics, Echo (computing), Astrophysics::Instrumentation and Methods for Astrophysics, Time evolution, FOS: Physical sciences, Signal, law.invention, Power (physics), Physics and Astronomy (all), Bistatic radar, law, Reflection (physics), Radar, Astrophysics - High Energy Astrophysical Phenomena, Physics::Atmospheric and Oceanic Physics, Geology, Radio wave
Abstract

We investigate the possibility of detecting extensive air showers by the radar technique. Considering a bistatic radar system and different shower geometries, we simulate reflection of radio waves off the static plasma produced by the shower in the air. Using the Thomson cross-section for radio wave reflection, we obtain the time evolution of the signal received by the antennas. The frequency upshift of the radar echo and the power received are studied to verify the feasibility of the radar detection technique., Comment: 6 pages, 4 figures, to be published in proceedings of the International Symposium on Future Directions in UHECR Physics, CERN 2012

Published
2013

21. High-multiplicity lead-lead interactions at 158 GeV/cper nucleon

Author

E. D. Kolganova, C. J. Waddington, E. A. Pozharova, Henryk Wilczyński, W. Wolter, Andrzej Olszewski, P. Deines-Jones, J. P. Wefel, K. Sengupta, B. Wilczynska, Adam Trzupek, R. Holynski, W. V. Jones, B. S. Nilsen, Michael Cherry, M. Szarska, Krzysztof Wozniak, Barbara Wosiek, D. Kudzia, and A. Dabrowska

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Monte Carlo method, High multiplicity, Nuclear physics, Superposition principle, Pseudorapidity, Quark–gluon plasma, Multiplicity (chemistry), Nuclear Experiment, Nucleon, Atomic collisions
Abstract

The Krakow-Louisiana-Minnesota-Moscow Collaboration (KLMM) has exposed a set of emulsion chambers with lead targets to a 158 GeV/c per nucleon beam of Pb-208 nuclei, and we report the initial analysis of 40 high-multiplicity Pb-Pb collisions. To test the validity of the superposition model of nucleus-nucleus interactions in this new regime, we compare the shapes of the pseudorapidity distributions with FRITIOF Monte Carlo model calculations, and find close agreement for even the most central events. We characterize head-on collisions as having a mean multiplicity of 1550 +/- 120 and a peak pseudorapidity density of 390 +/- 30. These estimates are significantly lower than our FRITIOF calculations.

Published
1996

22. Phase space dependence of the correlations among particles produced in high energy nuclear collisions

Author

A. Dąbrowska, Adam Trzupek, D. Kudzia, B. Wilczynski, M. Szarska, Phyllis S. Freier, Barbara Wosiek, C. J. Waddington, W. V. Jones, R. Holynski, A. Jurak, W. Wolter, Henryk Wilczyński, Krzysztof Woźniak, J. P. Wefel, and Andrzej Olszewski

Subjects
Physics, Phase transition, Physics and Astronomy (miscellaneous), Proton, Nuclear Theory, Elementary particle, Nuclear physics, Particle acceleration, Pseudorapidity, Phase space, Particle, Atomic physics, Nuclear Experiment, Nucleon, Engineering (miscellaneous)
Abstract

The fluctuations of produced particles are investigated in central collisions of proton, oxygen and sulphur projectiles with (Ag,Br) target nuclei at 200 GeV per nucleon. The analysis is carried out in terms of factorial moments and correlation integrals in different pseudorapidity regions. Evidence is found for nonstatistical fluctuations. These fluctuations depend weakly on the phase space, although a slightly stronger effect is seen in the forward pseudorapidity region. The dependence of the observed effect on the mass of the projectile particle disagrees with the expectations of superposition models. The results of this analysis indicate that a self-similar cascade process is the origin of the fluctuations, even though the association of the observed effect with the occurence of a second order phase transition cannot be definitely ruled out.

Published
1995

23. Enhancements to the Southern Pierre Auger Observatory

Author

Giorgio Matthiae, E. Moreno, C. Macolino, Alessio Gorgi, J. Oehlschläger, S. Harmsma, M. Ave, R. Mussa, J. J. Beatty, Norbert Kunka, Silvia Mollerach, Alain Hervé, J. Coppens, Antonio Insolia, R. Sato, G. Müller, L. Winders, Richard Dallier, Christopher Morris, Jaime Alvarez-Muñiz, S. Dagoret-Campagne, Henry Glass, Eva Santos, C. Meurer, D. Pakk Selmi-Dei, D. Schuster, A. Anzalone, C. Morello, M. Prouza, Domenico Tegolo, A. Cordier, Antonio Bueno, M. Roth, N. Nierstenhoefer, R. D. Parsons, Luis Villaseñor, Dariusz Gora, Sergio Pastor, Diego Harari, B. Sarkar, R. Rebolo Lopez, Carola Dobrigkeit, Sergio Sciutto, P. Younk, Fabian Schmidt, J. K. Kulbartz, Daniel Gonzalez, Ricardo Vázquez, Jakub Vicha, P. A. Kasper, J. S. Díaz, P. Abreu, S. L. C. Barroso, M. Will, V. H. Ponce, T. Paul, B. Vargas Cárdenas, Miroslav Palatka, T. Yamamoto, Rémi Bardenet, Alexander Menshikov, D. Kruppke-Hansen, Simone Riggi, Ruben Squartini, Jiri Chudoba, Daniel Kuempel, D.R. Walz, A. Italiano, Sebastian Schulte, E. Strazzeri, E. Varela, N. T. Thao, T. Hebbeker, A. Shadkam, Peter Schiffer, K. B. Barber, A. Lemiere, I. Zaw, A. Creusot, Paolo Privitera, R.M. Kieckhafer, S. Maldera, P. Brogueira, M. Blanco, M. Zimbres-Silva, Mário Pimenta, Gregory R Snow, Moritz Münchmeyer, Christopher B. Williams, D. Maurizio, J. C. Moreno, Ralph Engel, E. Petermann, H. Schoorlemmer, A. Śmiał kowski, D. Allard, K. Gesterling, Mario Scuderi, Ivone F. M. Albuquerque, C. Aramo, Carlos Hojvat, Ernesto Kemp, H. H. Silva Lopez, Andreas Weindl, Dusan Mandat, M. Ambrosio, Niraj Dhital, I. Valiño, Katrin Link, E. Menichetti, Bruce R. Dawson, C. E. Santo, R. Bruijn, Petr Schovanek, Pham Ngoc Diep, C. Robledo, O. Wainberg, Jonny Kleinfeller, J. Alvarez Castillo, F. Sarazin, R. F. Gamarra, Karen S. Caballero-Mora, A. Stutz, H. R. Marquez Falcon, Gualberto Avila, Angela V. Olinto, C. Di Giulio, Michael Sutherland, A. Guzman, M. A. Muller, G. Marsella, A. Filevich, P. Gouffon, Gaetano Salina, U. Fröhlich, J. Bäuml, G. Yuan, P. Karhan, Bianca Keilhauer, M. Monasor, B. Zamorano, Sebastian Achim Mueller, M. Gold, J. D. Hague, L. Perrone, S. Westerhoff, Viviana Scherini, N. Palmieri, L. Anchordoqui, Alessandro Petrolini, K. Weidenhaupt, V. Verzi, P. Wahrlich, G. Sigl, L. Niemietz, A. Tamashiro, Heino Falcke, Paulo J. S. Gonçalves, J. Aublin, Miroslav Hrabovský, J. Lozano Bahilo, Segev BenZvi, Andreas Haungs, M. Videla, Michael Unger, A. Schmidt, Francisco J. Blanco, G. Cataldi, M. L. Díaz Castro, Jaroslaw Stasielak, Juan Carlos D'Olivo, L. del Peral, I. Fajardo Tapia, Hans Klages, A. Chiavassa, A. Nelles, M. T. Dova, Matthias Kleifges, H. Spinka, P. Ristori, S. H. Cheng, O. Ravel, Jan Ridky, V. Rizi, Corbin Covault, Roger W Clay, A. Ferrero, Azadeh Keivani, F. Gomez Albarracin, Esteban Roulet, Philipp Mertsch, Aaron S. Chou, Ricardo Piegaia, C. E. Fracchiolla, F. Arqueros, N. Krohm, V. M. Olmos-Gilbaja, P. Necesal, Germano Guedes, Hermann-Josef Mathes, G. Tristram, U. Cotti, Olivier Deligny, H. Salazar, Geraldina Golup, Alexander Grillo, Juan Pallotta, M. Tueros, Rodrigo Pelayo, P. Allison, Osvaldo Catalano, D. D'Urso, M. I. Micheletti, J. Rodriguez Martino, S. Fliescher, Corinne Berat, D. Nitz, D. García Gámez, Martina Bohacova, Miroslav Pech, Tobias Winchen, T. Bäcker, J. C. Marin, Hartmut Gemmeke, J. L. Harton, J. Petrovic, Xavier Bertou, Fausto Guarino, Jose Luis La Rosa Navarro, J. Pȩkala, H. Wahlberg, M. Zavrtnik, Javier Gonzalez, Piera Luisa Ghia, Darko Veberič, Diego Ravignani, Lino Miramonti, B. Rouillé-d'Orfeuil, P. T. Nhung, Anderson Fauth, S. Gambetta, Pedro Assis, K. Kadija, Adrian Rovero, J. R. Vázquez, O. Taşcău, J. R. T. de Mello Neto, Tiina Suomijarvi, K. D. de Vries, Jörg R. Hörandel, W. C. Brown, Ioana Codrina Maris, V. de Souza, K. Louedec, Mariangela Settimo, K. H. Kampert, Alexey Yushkov, J. F. Valdés Galicia, D. Monnier Ragaigne, P. L. Biermann, P. Buchholz, David Warner, Michael Ziolkowski, Javier Tiffenberg, I. De Mitri, H. Blümer, W. Rodrigues de Carvalho, Gonzalo Parente, J. Rosado, Benoît Revenu, S. Mićanović, D. Garcia-Pinto, Danilo Zavrtanik, M. S. A. B. Leão, Kumiko Kotera, Bryan C. Fuchs, Dieter Heck, Paul Sommers, R. Cester, A. Aminaei, A. F. Barbosa, Iván Sidelnik, W. Tkaczyk, B. J. Whelan, D. H. Koang, P. N. Dong, P. Lebrun, M. J. Cooper, Piotr Homola, P. Facal San Luis, M. Grigat, B. Morales, S. Jiraskova, M. Tartare, R. Gaior, C. Pfendner, J. W. Cronin, S. R. Gozzini, H. Martinez, Tim Huege, Dalibor Nosek, M. Josebachuili, J. Neuser, N. Hollon, E. Grashorn, F. Sánchez, Lawrence Wiencke, C. Timmermans D. K. Tiwari, H. Cook, M. De Domenico, Marcos Santander, C. O. Escobar, Valerio Pirronello, A.D. Supanitsky, A. Curutiu, J. A. J. Matthews, J. L. Kelley, Henryk Wilczyński, I. Allekotte, Sofia Andringa, R. Tcaciuc, J. D. Swain, Tanguy Pierog, Alan Watson, M. G. Winnick, F. Montanet, R. Bonino, A. Criss, Sergio Dasso, Zbigniew Szadkowski, M.D. Rodríguez-Frías, B. Wilczyńska, N. Pacheco, C. Jarne, Warner A. Miller, W. Docters, Paul Mantsch, Kurt Becker, G. Wieczorek, J. C. dos Anjos, E. Trovato, M. Gómez Berisso, P. Travnicek, E. J. Ahn, N. Griffith, Ernesto Arganda, Alejandra Parra, S. Sánchez Navas, Isabelle Lhenry-Yvon, M. Mostafá, N. Phan, Jose Chinellato, J. Chauvin, Edivaldo Moura Santos, J. Stapleton, M. Stephan, C. Lachaud, Peter Mazur, R. E. Burton, Y. Guardincerri, J. Knapp, A. Lopez Agüera, Maria J. Ortiz, H. Lyberis, D. Martello, Maria Rita Coluccia, Y. Petrov, M. C. Maccarone, P. Lautridou, M. Weber, N. Scharf, Carla Bonifazi, Alberto Segreto, Jose A. Bellido, A. Dorofeev, Iuri Muniz Pepe, A. Lucero, Peter Hansen, Nataliia Borodai, John Matthews, Jaroslava Schovancova, A. Letessier-Selvon, Maria Giller, Glennys R. Farrar, Jan Ebr, Arnulfo Zepeda, Etienne Parizot, L. Valore, J. Allen, Rossella Caruso, R. Pesce, Bruce Becker, J. Sorokin, T. Rossler, A. Bellétoile, Markus Risse, Galo Rafael Gonzalvo Rodriguez, Marianne Ludwig, Sergio Petrera, M. Melissas, G. La Rosa, F. Kuehn, H. Rivera, R. M. de Almeida, Rúben Conceição, Marco Aglietta, Lukas Nellen, M. Wommer, V. Marin, P. Billoir, S. Grebe, Sven Querchfeld, B. Gookin, M. Urban, C. Bleve, H. Dembinski, R. Ulrich, M.A. Leigui de Oliveira, C. J. Todero Peixoto, D. B. Tridapalli, P. Pieroni, L. Martin, A. Horneffer, P. Petrinca, Antonella Castellina, O. Martínez Bravo, M. Erdmann, V. C. Holmes, D. Lebrun, I. Dutan, I. Rodriguez-Cabo, B. M. Baughman, Julian Rautenberg, Radomir Smida, S. Coutu, Federico Suarez, A. Tonachini, L. Nožka, Lorenzo Cazon, G. De La Vega, A. M. van den Berg, Norberto Fazzini, Analisa Mariazzi, D. Melo, Kai Daumiller, Benjamin A. Garcia, M. Nyklicek, A. Filipčič, J. Rodriguez Rojo, L. Caramete, S. Stanič, Manuel Platino, C. De Donato, Jeffrey Brack, Olaf Scholten, M. Szuba, F.G. Schröder, Enrique Zas, Harald Schieler, A. Tapia, M. Balzer, C. Rühle, T. Yapici, M. Pontz, G. Decerprit, Alberto Etchegoyen, G. Navarra, A. P. Ferguson, C. A. Moura, Bernardo Tomé, Brian Fick, Brian Wundheiler, Fernando Contreras, Balázs Kégl, Subir Sarkar, A. Gascon, Hernán Asorey, T. Šuša, R.C. Shellard, Denise Boncioli, F. Ionita, S. J. De Jong, M. Avenier, D. Thomas, Ugo Giaccari, Francesco Salamida, German Ros, Gustavo Medina-Tanco, C. G. Tavera Ruiz, Eduardo Quel, E. D. Fraenkel, W. J. M. de Mello Junior, T. Antičić, J. Roberts, and O. Krömer

Subjects
History, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Cosmic ray, Scintillator, 01 natural sciences, 7. Clean energy, Education, Optics, Observatory, 0103 physical sciences, 010306 general physics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Cherenkov radiation, Physics, Pierre Auger Observatory, 010308 nuclear & particles physics, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Computer Science Applications, Air shower, Experimental High Energy Physics, Amiga, business
Abstract

The southern Pierre Auger Observatory has been detecting cosmic rays above 1018eV since 2004, exploiting a hybrid air shower detection technique, with 1660 water Cherenkov detectors together with 24 air fluorescence telescopes on a 3000 km2 site. As low energy enhancements to the observatory, 3 additional telescopes with elevated fields of view were built (HEAT). The detector density was increased in the HEAT fields of view by a factor of four in an area of about 25 km2. This setup enables unbiased hybrid data taking above 1017eV. The infilled area is also being equipped with large underground scintillator muon detectors (AMIGA). Finally, a prototype array of radio antenna stations (AERA), working from 30 to 80 MHz, has been installed in a part of the infill. Properties and status of AMIGA, HEAT, and AERA are presented.

Published
2012

24. Particle production in interactions of 200 GeV/nucleon oxygen and sulfur nuclei in nuclear emulsion

Author

A. Jurak, Adam Trzupek, M. Szarska, Andrzej Olszewski, Phyllis S. Freier, Krzysztof Wozniak, Michael Cherry, J. P. Wefel, Barbara Wosiek, K. Sengupta, W. V. Jones, Henryk Wilczyński, W. Wolter, R. Holynski, B. Wilczynska, C. J. Waddington, and A. Dabrowska

Subjects
Nuclear physics, Physics, Nuclear reaction, Large Hadron Collider, Projectile, Pseudorapidity, Nuclear Theory, Elementary particle, Nuclear emulsion, Multiplicity (chemistry), Atomic physics, Nuclear Experiment, Nucleon
Abstract

Oxygen and sulfur nuclei with energies of 200 GeV/nucleon have been allowed to interact in nuclear emulsions exposed at CERN. These emulsions have been scanned with a minimum bias so that essentially all the interactions occurring were detected. Nearly 1000 interactions of each projectile have been analyzed. We present results on the multiplicity distributions, the pseudorapidity distributions, and the fragmentation of the projectile and target nuclei. It is shown that the mean number of intranuclear collisions in each interaction, calculated from a superposition model, provides a useful parameter for organizing the data. We conclude that there are no significant deviations even at these energies from models, such as the venus model, describing the interactions as being the superposition of individual nucleon-nucleon collisions.

Published
1993

25. Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter

Author

M. Videla, M. Avenier, L. Nožka, G. Cataldi, I. Lhenry-Yvon, M. G. Winnick, Marcos Santander, Peter Mazur, Tanguy Pierog, J. Knapp, L. del Peral, L. Caramete, H. Gemmeke, W. J. M. de Mello Junior, J. Rodriguez Martino, J. Petrovic, R. Mussa, Ivor Fleck, K. Louedec, G. Yuan, B. Zamorano, Azadeh Keivani, M.E. Ortiz, Daniel Omar Badagnani, Ralf Ulrich, Paul M. Mantsch, Anderson Fauth, S. Gambetta, R. Piegaia, N. Nierstenhoefer, Antoine Letessier-Selvon, Alexander Schmidt, K. Arisaka, U. Giaccari, Petr Schovanek, J. W. Cronin, Nataliia Borodai, A. Śmiałkowski, Dusan Mandat, Ioana Codrina Maris, Ricardo Vázquez, B. R. Becker, Moritz Münchmeyer, Ralph Engel, D. H. Koang, E. Moreno, T. Susa, A. Stutz, Christopher Morris, Jaime Alvarez-Muñiz, D. Schuster, L. Winders, S. Grebe, Matias Tueros, R. Squartini, John L. Harton, E. Grashorn, T. Paul, T. Antičić, Olivier Ravel, E. Menichetti, A. F. Barbosa, M. Ave, R. E. Burton, R. M. de Almeida, Dariusz Gora, T. Rossler, Fabian Schmidt, K. Link, Miroslav Hrabovský, A. Haungs, Maria-Teresa Dova, Paul Sommers, P. N. Dong, M. J. Cooper, J. D. Hague, M. De Domenico, Maria Rita Coluccia, P. Abreu, D. Ravignani, Luis A. Anchordoqui, Sergio Sciutto, Federico Suarez, B. Rouillé-D'Orfeuil, D. B. Tridapalli, J. Allen, R. Pesce, B. M. Baughman, A. Chou, M. Platino, M. Monasor, Markus Roth, J. F. Valdés Galicia, X. Garrido, I. De Mitri, Dieter Heck, Martin Urban, C. Macolino, J. Oehlschläger, B. J. Whelan, A. Lopez Agüera, D. Maurizio, Domenico Tegolo, P. W. Younk, T. Bäcker, Alberto Filevich, Peter Hansen, Fausto Guarino, C. Aramo, John Matthews, C. Morello, Peter Buchholz, Francisco J. Blanco, V. H. Ponce, R. Sato, Jiri Chudoba, Carola Dobrigkeit, R. F. Gamarra, I. Valiño, Nicolás G. Busca, M. I. Micheletti, M. A. Leigui de Oliveira, R. Tcaciuc, F. Schroeder, F. Montanet, J. C. dos Anjos, K. D. de Vries, Matthias Balzer, Pham Ngoc Diep, A. Lemiere, H. Glass, F. Gomez Albarracin, V. Scherini, P. Wahrlich, J. R. T. de Mello Neto, Alan Watson, W. Fulgione, Marco Aglietta, Heino Falcke, Arnulfo Zepeda, A. Bellétoile, Antonio Bueno, Sergio Pastor, Jonny Kleinfeller, A. Gorgi, J. Alvarez Castillo, G. Decerprit, Glennys R. Farrar, Jose Chinellato, Tonia M. Venters, P. Gonalves, D. Garcia-Pinto, M. S. A. B. Leão, C. E. Fracchiolla, G. Wieczorek, T. Schmidt, D. D'Urso, Peter L. Biermann, Gualberto Avila, K. Kotera, Ingomar Allekotte, Miroslav Palatka, Angela V. Olinto, Valerio Pirronello, S. Dagoret-Campagne, Corinne Berat, S. J. De Jong, E. Parizot, C. E. Santo, Pascal Lautridou, P. Schiffer, D. Thomas, A. Curutiu, N. Palmieri, S. Jiraskova, Vincent Marin, N. Krohm, Paolo Privitera, Vasiliki Pavlidou, W. Tkaczyk, S. Schulte, F. Arqueros, J. Pȩkala, P. Necesal, A. Menshikov, Martina Bohacova, Lorenzo Cazon, P. Billoir, Zbigniew Szadkowski, M. Gold, H. Rivera, S. Mueller, Rodrigo Pelayo, P. Karhan, R. M. Kieckhafer, Juan Moreno, J. Rautenberg, O. Wainberg, C. J.W.P. Timmermans, C. Lachaud, C. Meurer, T. Karova, J. Sorokin, Graciela B. Gelmini, E. Trovato, D. Tcherniakhovski, H. Schoorlemmer, W. C. Brown, J. Lozano Bahilo, John Swain, Guenter Sigl, Markus Risse, U. Cotti, A. Dorofeev, B. Gookin, A. Horneffer, P. Petrinca, T. Tarutina, K. Weidenhaupt, Matthias Kleifges, Corbin Covault, Y. Petrov, Germano Guedes, Olivier Deligny, Alexander Grillo, S. Fliescher, E. Petermann, E. M. Santos, M. Gómez Berisso, R. C. Shellard, A. Tapia, Balázs Kégl, D. García Gámez, Miroslav Pech, Lino Miramonti, C. Rivire, M. Unger, L. Villaseñor, A. D. Supanitsky, Hernán Asorey, H. Lyberis, Carla Bonifazi, O. Tacu, Jose A. Bellido, Bruce R. Dawson, J. S. Díaz, Rémi Bardenet, M. Zavrtanik, A. Della Selva, Hans Klages, A. Chiavassa, Henryk Wilczyński, Fred Sarazin, Lukas Nellen, Tim Huege, M. Wommer, Ernesto Arganda, L. Martin, P. Gouffon, M. D. Rodríguez-Frías, Y. Guardincerri, Gaetano Salina, Petr Travnicek, F. Ionita, M. S. Sutherland, Jaime Rosado, K. B. Barber, J. L. Kelley, A. Italiano, L. R. Wiencke, I. Rodriguez-Cabo, R. Cester, Danilo Zavrtanik, S. R. Gozzini, A.M. van den Berg, K. Payet, G. De La Vega, B. Morales, Darko Veberič, Rossella Caruso, Pietro Oliva, A. Lucero, C. Robledo, G. La Rosa, E. Strazzeri, Sofia Andringa, B. Vargas Cárdenas, D. K. Tiwari, J. A.J. Matthews, T. Suomijärvi, J. Pallotta, M. Prouza, E. J. Quel, Xavier Bertou, N. Pacheco, J. Rodriguez Rojo, Bianca Keilhauer, B. Tome, Pedro Assis, Béatrice Fuchs, M. Blanco, Javier Tiffenberg, V. C. Holmes, D. Lebrun, I. Dutan, Jan Ridky, Enrique Zas, I. M. Pepe, C. Di Giulio, R. Bonino, Fernando Contreras, J. Stasielak, S. Coutu, Norberto Fazzini, A. Denkiewicz, M. Nyklicek, M. McEwen, P. T. Nhung, A. Ferrero, S. Navas, F. Kuehn, M. C. Maccarone, M. Melissas, E. Colombo, Hernan Wahlberg, D. Kruppke-Hansen, A. Filipčič, Javier Gonzalez, D. Nosek, M. Will, G. Marsella, E. D. Fraenkel, Marcio Aparecido Muller, J. Parrisius, Jan Ebr, Sergio Petrera, G. Parente, P. Ristori, V. M. Olmos-Gilbaja, D. Allard, A. Weindl, Subir Sarkar, B. Revenu, Carlos Hojvat, Ernesto Kemp, A. Gascon, E. Santos, Denise Boncioli, G. Golup, J. K. Kulbartz, Kreso Kadija, G. Tristram, U. Fröhlich, D. Pakk Selmi-Dei, J. R. Vázquez, German Ros, H. R. Marquez Falcon, V. Verzi, M. Kaducak, Mariangela Settimo, D. Harari, Alessandro Petrolini, Pedro Brogueira, Alexey Yushkov, Miguel Mostafá, J. Schovancova, M. L. Díaz Castro, J. L. Navarro, H. Blümer, R. Conceião, Piotr Homola, Daniel Gonzalez, P. Facal San Luis, H. Schieler, Karl-Heinz Kampert, Antonella Castellina, Hermann-Josef Mathes, Maurice Stephan, C. L. Williams, H. M. Spinka, O. Krömer, S. Riggi, A. P. Ferguson, M. Pimenta, A. Tonachini, F. Salamida, J. Stapleton, Kai Daumiller, M. Grigat, Mario Scuderi, Tobias Winchen, P. Lebrun, Karen S. Caballero-Mora, Daniel Kuempel, M. Ludwig, Martin Erdmann, Beatriz García, Carlos Escobar, A. Creusot, Roger W Clay, A. Cordier, S. Maldera, N. T. Thao, D. Warner, Gustavo Medina-Tanco, Thomas Hebbeker, Sergio Dasso, R. Bruijn, Richard Dallier, A. Parra, Jeffrey Brack, Olaf Scholten, Humberto Ibarguen Salazar, C. De Donato, G. Navarra, F. Schüssler, S. L.C. Barroso, T. Yamamoto, Brian Fick, Jörg R. Hörandel, T. Bergmann, Warner A. Miller, Antonio Insolia, L. Valore, Amin Aminaei, I. Zaw, B. Wilczynska, Sasa Micanovic, A. Criss, Maria Giller, M. Pontz, R. López, A. Shadkam, Juan Carlos D'Olivo, Esteban Roulet, Osvaldo Catalano, Piera Luisa Ghia, L. Perrone, J. Chauvin, A. Segreto, Radomir Smida, D. Melo, A. Anzalone, V. de Souza, R. D. Parsons, Alberto Etchegoyen, B. Wundheiler, Gregory R Snow, P. H. Kasper, N. Scharf, A. Tamashiro, D. Monnier Ragaigne, S. Harmsma, C. Pfendner, J. J. Beatty, Norbert Kunka, D. Nitz, Silvia Mollerach, Alain Hervé, J. Coppens, H. Dembinski, G. Matthiae, M. Ambrosio, Julien Aublin, K. Gesterling, D. Martello, G. Rodriguez, A. C. Rovero, C. Bleve, C. J. Todero Peixoto, Vincenzo Rizi, M. Ziolkowski, O. Martínez Bravo, F. Sánchez, Iván Sidelnik, H. Cook, N. Phan, Eun-Joo Ahn, K. H. Becker, A. G. Mariazzi, P., Abreu, M., Aglietta, E. J., Ahn, D., Allard, I., Allekotte, J., Allen, J., Alvarez Castillo, J., Alvarez Muñiz, M., Ambrosio, A., Aminaei, L., Anchordoqui, S., Andringa, T., Anticic, A., Anzalone, C., Aramo, E., Arganda, K., Arisaka, F., Arquero, H., Asorey, P., Assi, J., Aublin, M., Ave, M., Avenier, G., Avila, T., Bäcker, D., Badagnani, M., Balzer, K. B., Barber, A. F., Barbosa, R., Bardenet, S. L. C., Barroso, B., Baughman, J. J., Beatty, B. R., Becker, K. H., Becker, A., Bellétoile, J. A., Bellido, S., Benzvi, C., Berat, T., Bergmann, X., Bertou, P. L., Biermann, P., Billoir, F., Blanco, M., Blanco, Bleve, Carla, H., Blümer, M., Bohácová, D., Boncioli, C., Bonifazi, R., Bonino, N., Borodai, J., Brack, P., Brogueira, W. C., Brown, R., Bruijn, P., Buchholz, A., Bueno, R. E., Burton, N. G., Busca, K. S., Caballero Mora, L., Caramete, R., Caruso, A., Castellina, O., Catalano, G., Cataldi, L., Cazon, R., Cester, J., Chauvin, A., Chiavassa, J. A., Chinellato, A., Chou, J., Chudoba, R. W., Clay, E., Colombo, Coluccia, MARIA RITA, R., Conceição, F., Contrera, H., Cook, M. J., Cooper, J., Coppen, A., Cordier, U., Cotti, S., Coutu, C. E., Covault, A., Creusot, A., Cri, J., Cronin, A., Curutiu, S., Dagoret Campagne, R., Dallier, S., Dasso, K., Daumiller, B. R., Dawson, R. M., de Almeida, M., De Domenico, C., De Donato, S. J., de Jong, G., De La Vega, W. J. M., de Mello Junior, J. R. T., de Mello Neto, DE MITRI, Ivan, V., de Souza, K. D., de Vrie, G., Decerprit, L., del Peral, O., Deligny, A., Della Selva, H., Dembinski, A., Denkiewicz, C., Di Giulio, J. C., Diaz, M. L., Díaz Castro, P. N., Diep, C., Dobrigkeit, J. C., D'Olivo, P. N., Dong, A., Dorofeev, J. C., dos Anjo, M. T., Dova, D., D'Urso, I., Dutan, J., Ebr, R., Engel, M., Erdmann, C. O., Escobar, A., Etchegoyen, P., Facal San Lui, H., Falcke, G., Farrar, A. C., Fauth, N., Fazzini, A. P., Ferguson, A., Ferrero, B., Fick, A., Filevich, A., Filipcic, I., Fleck, S., Fliescher, C. E., Fracchiolla, E. D., Fraenkel, U., Fröhlich, B., Fuch, W., Fulgione, R. F., Gamarra, S., Gambetta, B., García, D., García Gámez, D., Garcia Pinto, X., Garrido, A., Gascon, G., Gelmini, H., Gemmeke, K., Gesterling, P. L., Ghia, U., Giaccari, M., Giller, H., Gla, L. M., Goggin, M. S., Gold, G., Golup, F., Gomez Albarracin, M., Gómez Berisso, P., Gonçalve, D., Gonzalez, J. G., Gonzalez, B., Gookin, D., Góra, A., Gorgi, P., Gouffon, S. R., Gozzini, E., Grashorn, S., Grebe, M., Grigat, A. F., Grillo, Y., Guardincerri, F., Guarino, G. P., Guede, J. D., Hague, P., Hansen, D., Harari, S., Harmsma, J. L., Harton, A., Haung, T., Hebbeker, D., Heck, A. E., Herve, C., Hojvat, V. C., Holme, P., Homola, J. R., Hörandel, A., Horneffer, M., Hrabovský, T., Huege, M., Hussain, A., Insolia, F., Ionita, A., Italiano, S., Jiraskova, K., Kadija, M., Kaducak, K. H., Kampert, P., Karhan, T., Karova, P., Kasper, B., Kégl, B., Keilhauer, A., Keivani, J. L., Kelley, E., Kemp, R. M., Kieckhafer, H. O., Klage, M., Kleifge, J., Kleinfeller, J., Knapp, D. H., Koang, K., Kotera, N., Krohm, O., Krömer, D., Kruppke Hansen, F., Kuehn, D., Kuempel, J. K., Kulbartz, N., Kunka, G., La Rosa, C., Lachaud, P., Lautridou, M. S. A. B., Leão, D., Lebrun, P., Lebrun, M. A., Leigui de Oliveira, A., Lemiere, A., Letessier Selvon, I., Lhenry Yvon, K., Link, R., López, A., Lopez Agüera, K., Louedec, J., Lozano Bahilo, A., Lucero, M., Ludwig, H., Lyberi, M. C., Maccarone, C., Macolino, S., Maldera, D., Mandat, P., Mantsch, A. G., Mariazzi, V., Marin, I. C., Mari, H. R., Marquez Falcon, Marsella, Giovanni, Martello, Daniele, L., Martin, O., Martínez Bravo, H. J., Mathe, J., Matthew, J. A. J., Matthew, G., Matthiae, D., Maurizio, P. O., Mazur, M., Mcewen, G., Medina Tanco, M., Melissa, D., Melo, E., Menichetti, A., Menshikov, C., Meurer, S., Micanovic, M. I., Micheletti, W., Miller, L., Miramonti, S., Mollerach, M., Monasor, D., Monnier Ragaigne, F., Montanet, B., Morale, C., Morello, E., Moreno, J. C., Moreno, C., Morri, M., Mostafá, S., Mueller, M. A., Muller, R., Mussa, G., Navarra ‡, J. L., Navarro, S., Nava, P., Necesal, L., Nellen, P. T., Nhung, N., Nierstenhoefer, D., Nitz, D., Nosek, L., Nožka, M., Nyklicek, J., Oehlschläger, A., Olinto, P., Oliva, V. M., Olmos Gilbaja, M., Ortiz, N., Pacheco, D., Pakk Selmi Dei, M., Palatka, J., Pallotta, N., Palmieri, G., Parente, E., Parizot, A., Parra, J., Parrisiu, R. D., Parson, S., Pastor, T., Paul, V., Pavlidou c, K., Payet, M., Pech, J., Pekala, R., Pelayo, I. M., Pepe, Perrone, Lorenzo, R., Pesce, E., Petermann, S., Petrera, P., Petrinca, A., Petrolini, Y., Petrov, J., Petrovic, C., Pfendner, N., Phan, R., Piegaia, T., Pierog, M., Pimenta, V., Pirronello, M., Platino, V. H., Ponce, M., Pontz, P., Privitera, M., Prouza, E. J., Quel, J., Rautenberg, O., Ravel, D., Ravignani, B., Revenu, J., Ridky, S., Riggi, M., Risse, P., Ristori, C., Rivière, V., Rizi, C., Robledo, G., Rodriguez, J., Rodriguez Martino, J., Rodriguez Rojo, I., Rodriguez Cabo, M. D., Rodríguez Fría, G., Ro, J., Rosado, T., Rossler, M., Roth, B., Rouillé d'Orfeuil, E., Roulet, A. C., Rovero, F., Salamida, H., Salazar, G., Salina, F., Sánchez, M., Santander, C. E., Santo, E., Santo, E. M., Santo, F., Sarazin, S., Sarkar, R., Sato, N., Scharf, V., Scherini, H., Schieler, P., Schiffer, A., Schmidt, F., Schmidt, T., Schmidt, O., Scholten, H., Schoorlemmer, J., Schovancova, P., Schovánek, F., Schroeder, S., Schulte, F., Schüssler, D., Schuster, S. J., Sciutto, M., Scuderi, A., Segreto, D., Semikoz, Settimo, Mariangela, A., Shadkam, R. C., Shellard, I., Sidelnik, G., Sigl, A., Smialkowski, R., Šmída, G. R., Snow, P., Sommer, J., Sorokin, H., Spinka, R., Squartini, J., Stapleton, J., Stasielak, M., Stephan, E., Strazzeri, A., Stutz, F., Suarez, T., Suomijärvi, A. D., Supanitsky, T., Šuša, M. S., Sutherland, J., Swain, Z., Szadkowski, A., Tamashiro, A., Tapia, T., Tarutina, O., Tascau, R., Tcaciuc, D., Tcherniakhovski, D., Tegolo, N. T., Thao, D., Thoma, J., Tiffenberg, C., Timmerman, D. K., Tiwari, W., Tkaczyk, C. J., Todero Peixoto, B., Tomé, A., Tonachini, P., Travnicek, D. B., Tridapalli, G., Tristram, E., Trovato, M., Tuero, R., Ulrich, M., Unger, M., Urban, J. F., Valdés Galicia, I., Valiño, L., Valore, A. M., van den Berg, B., Vargas Cárdena, J. R., Vázquez, R. A., Vázquez, D., Veberic, T., Venter, V., Verzi, M., Videla, L., Villaseñor, H., Wahlberg, P., Wahrlich, O., Wainberg, D., Warner, A. A., Watson, K., Weidenhaupt, A., Weindl, S., Westerhoff, B. J., Whelan, G., Wieczorek, L., Wiencke, B., Wilczynska, H., Wilczynski, M., Will, C., William, T., Winchen, L., Winder, M. G., Winnick, M., Wommer, B., Wundheiler, T., Yamamoto a, P., Younk, G., Yuan, A., Yushkov, B., Zamorano, E., Za, D., Zavrtanik, M., Zavrtanik, I., Zaw, A., Zepeda, M., Ziolkowski, APC - Astrophysique des Hautes Energies (APC - AHE), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, 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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, 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)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), PIERRE AUGER, Guarino, Fausto, D'Urso, Domenico, Valore, Laura, Aramo, Carla, DELLA SELVA, Angelo, Yushkov, Alexey, The Pierre Auger, C. o. l. l. a. b. o. r. a. t. i. o. n., Abreu, P., Aglietta, M., Ahn, E., Allard, D., Allekotte, I., Allen, J., Alvarez Castillo, J., Alvarez-Muñiz, J., Ambrosio, M., Aminaei, A., Anchordoqui, L., Andringa, S., Antičić, T., Anzalone, A., Aramo, C., Arganda, E., Arisaka, K., Arqueros, F., Asorey, H., Assis, P., Aublin, J., Ave, M., Avenier, M., Avila, G., Bäcker, T., Badagnani, D., Balzer, M., Barber, K., Barbosa, A., Bardenet, R., Barroso, S., Baughman, B., Beatty, J., Becker, B., Becker, K., Bellétoile, A., Bellido, J., Berat, C., Bergmann, T., Bertou, X., Biermann, P., Billoir, P., Blanco, F., Blanco, M., Bleve, C., Blümer, H., Boháčová, M., Boncioli, D., Bonifazi, C., Bonino, R., Borodai, N., Brack, J., Brogueira, P., Brown, W., Bruijn, R., Buchholz, P., Bueno, A., Burton, R., Busca, N., Caballero-Mora, K., Caramete, L., Caruso, R., Castellina, A., Catalano, O., Cataldi, G., Cazon, L., Cester, R., Chauvin, J., Chiavassa, A., Chinellato, J., Chou, A., Chudoba, J., Clay, R., Colombo, E., Coluccia, M., Conceião, R., Contreras, F., Cook, H., Cooper, M., Coppens, J., Cordier, A., Cotti, U., Coutu, S., Covault, C., Creusot, A., Criss, A., Cronin, J., Curutiu, A., Dagoret-Campagne, S., Dallier, R., Dasso, S., Daumiller, K., Dawson, B., De Almeida, R., De Domenico, M., De Donato, C., De Jong, S., De La Vega, G., De Mello Junior, W., De Mello Neto, J., De Mitri, I., De Souza, V., De Vries, K., Decerprit, G., Del Peral, L., Deligny, O., Della Selva, A., Dembinski, H., Denkiewicz, A., Di Giulio, C., Diaz, J., Díaz Castro, M., Diep, P., Dobrigkeit, C., D'Olivo, J., Dong, P., Dorofeev, A., Dos Anjos, J., Dova, M., D'Urso, D., Dutan, I., Ebr, J., Engel, R., Erdmann, M., Escobar, C., Etchegoyen, A., Facal San Luis, P., Falcke, H., Farrar, G., Fauth, A., Fazzini, N., Ferguson, A., Ferrero, A., Fick, B., Filevich, A., Filipčič, A., Fleck, I., Fliescher, S., Fracchiolla, C., Fraenkel, E., Fröhlich, U., Fuchs, B., Fulgione, W., Gamarra, R., Gambetta, S., García, B., García Gámez, D., Garcia-Pinto, D., Garrido, X., Gascon, A., Gelmini, G., Gemmeke, H., Gesterling, K., Ghia, P., Giaccari, U., Giller, M., Glass, H., Gold, M., Golup, G., Gomez Albarracin, F., Gómez Berisso, M., Gonalves, P., Gonzalez, D., Gonzalez, J., Gookin, B., Góra, D., Gorgi, A., Gouffon, P., Gozzini, S., Grashorn, E., Grebe, S., Grigat, M., Grillo, A., Guardincerri, Y., Guarino, F., Guedes, G., Hague, J., Hansen, P., Harari, D., Harmsma, S., Harton, J., Haungs, A., Hebbeker, T., Heck, D., Herve, A., Hojvat, C., Holmes, V., Homola, P., Hörandel, J., Horneffer, A., Hrabovský, M., Huege, T., Insolia, A., Ionita, F., Italiano, A., Jiraskova, S., Kadija, K., Kaducak, M., Kampert, K., Karhan, P., Karova, T., Kasper, P., Kégl, B., Keilhauer, B., Keivani, A., Kelley, J., Kemp, E., Kieckhafer, R., Klages, H., Kleifges, M., Kleinfeller, J., Knapp, J., Koang, D., Kotera, K., Krohm, N., Krömer, O., Kruppke-Hansen, D., Kuehn, F., Kuempel, D., Kulbartz, J., Kunka, N., La Rosa, G., Lachaud, C., Lautridou, P., Leão, M., Lebrun, D., Lebrun, P., Leigui De Oliveira, M., Lemiere, A., Letessier-Selvon, A., Lhenry-Yvon, I., Link, K., López, R., Lopez Agüera, A., Louedec, K., Lozano Bahilo, J., Lucero, A., Ludwig, M., Lyberis, H., Maccarone, M., Macolino, C., Maldera, S., Mandat, D., Mantsch, P., Mariazzi, A., Marin, V., Maris, I., Marquez Falcon, H., Marsella, G., Martello, D., Martin, L., Martínez Bravo, O., Mathes, H., Matthews, J., Matthiae, G., Maurizio, D., Mazur, P., Mcewen, M., Medina-Tanco, G., Melissas, M., Melo, D., Menichetti, E., Menshikov, A., Meurer, C., Mičanović, S., Micheletti, M., Miller, W., Miramonti, L., Mollerach, S., Monasor, M., Monnier Ragaigne, D., Montanet, F., Morales, B., Morello, C., Moreno, E., Moreno, J., Morris, C., Mostafá, M., Mueller, S., Muller, M., Münchmeyer, M., Mussa, R., Navarra, G., Navarro, J., Navas, S., Necesal, P., Nellen, L., Nhung, P., Nierstenhoefer, N., Nitz, D., Nosek, D., Nožka, L., Nyklicek, M., Oehlschläger, J., Olinto, A., Oliva, P., Olmos-Gilbaja, V., Ortiz, M., Pacheco, N., Pakk Selmi-Dei, D., Palatka, M., Pallotta, J., Palmieri, N., Parente, G., Parizot, E., Parra, A., Parrisius, J., Parsons, R., Pastor, S., Paul, T., Pavlidou, V., Payet, K., Pech, M., Pȩkala, J., Pelayo, R., Pepe, I., Perrone, L., Pesce, R., Petermann, E., Petrera, S., Petrinca, P., Petrolini, A., Petrov, Y., Petrovic, J., Pfendner, C., Phan, N., Piegaia, R., Pierog, T., 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I., Zepeda, A., Ziolkowski, M., Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), 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), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), KVI - Center for Advanced Radiation Technology, Research unit Astroparticle Physics, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)

Subjects
Astronomy, Astrophysics, Ultra High Energy Cosmic ray, 01 natural sciences, law.invention, Observatory, law, Anisotropy, 010303 astronomy & astrophysics, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], UHECR, Astrophysics::Instrumentation and Methods for Astrophysics, Pierre Auger Observatory, GZK, Anisotropía, GALAXIES, NEUTRINOS, Greisen–Zatsepin–Kuz’min, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, ACTIVE GALACTIC NUCLEI, HIPASS CATALOG, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Active galactic nucleus, Radiación Cósmica, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Telescope, 0103 physical sciences, Cosmic rays, Ciencias Exactas, Astrophysics::Galaxy Astrophysics, SPECTRUM, 010308 nuclear & particles physics, Física, Astronomy and Astrophysics, Galaxy, Correlation with astrophysical sources, Extra-galactic, Sky, Experimental High Energy Physics
Abstract

Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen-Zatsepin-Kuz'min energy threshold, 6 x 10(19) eV. The anisotropy was measured by the fraction of arrival directions that are less than 3.1 degrees from the position of an active galactic nucleus within 75 Mpc (using the Veron-Cetty and Veron 12th catalog). An updated measurement of this fraction is reported here using the arrival directions of cosmic rays recorded above the same energy threshold through 31 December 2009. The number of arrival directions has increased from 27 to 69, allowing a more precise measurement. The correlating fraction is (38(-6)(+7))%, compared with 21% expected for isotropic cosmic rays. This is down from the early estimate of (69-(+11)(13))%. The enlarged set of arrival directions is examined also in relation to other populations of nearby extragalactic objects: galaxies in the 2 Microns All Sky Survey and active galactic nuclei detected in hard X-rays by the Swift Burst Alert Telescope. A celestial region around the position of the radiogalaxy Cen A has the largest excess of arrival directions relative to isotropic expectations. The 2-point autocorrelation function is shown for the enlarged set of arrival directions and compared to the isotropic expectation., We are very grateful to the following agencies and organizations for financial support: Comision Nacional de Energia Atomica, Fundacion Antorchas, Gobierno De La Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings and Valle Las Lenas, in gratitude for their continuing cooperation over land access, Argentina; the Australian Research Council; 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), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Ministerio de Ciencia e Tecnologia (MCT), Brazil; AVCR AV0Z10100502 and AV0Z10100522, GAAV KJB300100801 and KJB100100904, MSMT-CR LA08016, LC527, 1M06002, and MSM0021620859, Czech Republic; 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-1NSU/CNRS), France; Bundesministerium fur Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Finanzministerium Baden-Wurttemberg, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium fur Wissenschaft und Forschung, Nordrhein-Westfalen, Ministerium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Istituto Nazionale di Astrofisica (INAF), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy; Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands; Ministry of Science and Higher Education, Grant Nos. 1 P03 D 014 30 and N N202 207238, Poland; Fundacao para a Ciencia e a Tecnologia, Portugal; Ministry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia; Comunidad de Madrid, Consejeria de Educacion de la Comunidad de Castilla La Mancha, FEDER funds, Ministerio de Ciencia e Innovacion and Consolider-Ingenio 2010 (CPAN), Generalitat Valenciana, Junta de Andalucia, Xunta de Galicia, Spain; Science and Technology Facilities Council, United Kingdom; Department of Energy, Contract Nos. DE-AC02-07CH11359, DE-FR02-04ER41300, National Science Foundation, Grant No. 0450696, The Grainger Foundation USA; ALFA-EC/ HELEN, European Union 6th Framework Program, Grant No. MEIF-CT-2005-025057, European Union 7th Framework Program, Grant No. PIEF-GA-2008-220240, and UNESCO.

Published
2010

26. Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei

Author

A. Krieger, A. Curutiu, A. Della Selva, C. Grunfeld, J. Pallotta, E. J. Quel, M. Ortiz, Antoine Letessier-Selvon, M. D. Healy, Martina Bohacova, Patrick Allison, J. Sorokin, Graciela B. Gelmini, John Swain, Segev BenZvi, A. Creusot, A. G. K. Smith, A. Tamburro, T. Karova, Corbin Covault, T. Bergmann, S. Westerhoff, C. E. Fracchiolla, M. D. Rodriguez-Frias, P. Bernardini, R. R. McNeil, Alexander Schmidt, I. Valiño, P. Facal San Luis, L. Caramete, M. Gómez Berisso, M. Gonçalves do Amaral, Y. Petrov, Geraldina Golup, Alexander Grillo, R. C. Shellard, R. Mussa, M. Zavrtanik, Warner A. Miller, A. Lopez Agüera, J. Oehlschlaeger, K. Arisaka, H. Gemmeke, E. Menichetti, Jeffrey Brack, Olaf Scholten, Christopher Morris, Fred Sarazin, Lukas Nellen, R. López, V. Verzi, Peter Hansen, T. Yamamoto, Piotr Homola, E. Armengaud, Humberto Ibarguen Salazar, J. R. T. de Mello Neto, R. M. de Almeida, Ivor Fleck, J. Gutiérrez, Jaime Alvarez-Muñiz, I. Rodriguez-Cabo, Peter Buchholz, R. Gómez Herrero, P. Petrinca, D. Maurizio, P. T. Nhung, M. I. Micheletti, F. Schmidt, Tanguy Pierog, P. Blasi, D. Thomas, C. Berat, B. Morales, Matias Tueros, M. Videla, C. Wileman, Gaetano Salina, C. Riviere, G. Cataldi, Rossella Caruso, H. Glass, D. Garcia Gaimez, A. Tonachini, C. Aramo, F. Arneodo, Zbigniew Szadkowski, G. Hebrero, Darko Veberič, M. Settimo, A. Gorgi, A. Filevich, Marco Aglietta, H. Bluemer, H. M. Spinka, J. S. Díaz, Petr Travnicek, N. Smetniansky De Grande, D. Allard, J. Pochon, X. Garrido, J. Chauvin, Antonio Insolia, Juan Carlos D'Olivo, Esteban Roulet, C. De Donato, A. Zech, W. Fulgione, Rodrigo Pelayo, Petr Schovanek, L. del Peral, D. Lebrun, Osvaldo Catalano, A. Italiano, Miroslav Palatka, O. Wainberg, M. Prouza, J. Rodriguez Rojo, Bianca Keilhauer, S. Ferry, T. Suomijarvi, F. Schuessler, A. Smialkowski, Carla Bonifazi, Jose A. Bellido, I. Dutan, Matthias Kleifges, C. Di Giulio, Enrique Zas, Carlos Hojvat, Ernesto Kemp, D. Barnhill, Piera Luisa Ghia, M. Larlori, Miroslav Pech, J. Allen, I. M. Pepe, Maria-Teresa Dova, M. Patel, Balázs Kégl, T. Hauschildt, G. Navarra, Pham Ngoc Diep, N. G. Busca, T. Baecker, Markus Roth, Jaime Rosado, S. Navas, A. C. Roverok, M. Monasor, Jan Ridky, Germano Guedes, L. Perrone, J. Takahashi, R. Luna García, Alberto Etchegoyen, P. Gouffon, Olivier Deligny, Hernán Asorey, F. Salamida, H. Wu, Fausto Guarino, R. Cester, M. S. Gold, J. Rautenberg, O. Pisanti, T. Ohnuki, C. Robledo, Heino Falcke, A. Segreto, Fernando Contreras, M. S. Sutherland, D. Garcia-Pinto, Brian Fick, Danilo Zavrtanik, N. Pacheco, Paul Sommers, W. J. M. de Mello, F. Ionita, Luis N. Epele, A. Filipcic, T. Venters, Matthias Leuthold, S. J. de Jong Bg, Paulo J. S. Gonçalves, Francesc Ferrer, Sofia Andringa, Radomir Smida, D. Dornic, P. N. Dong, J. F. Valdés Galicia, C. Macolino, A. Cordier, Antonio Velarde, Miguel Mostafá, A. K. Tripathi, G. Wieczorek, Ricardo Piegaia, Gregory R Snow, S. Vorobiov, C. Delle Fratte, D. Melo, D. Nosek, A. Meli, Daniel Omar Badagnani, S. Parlati, I. Torres, J. Martinez, T. Schmidt, J. D. Hague, M. Hussain, Sergio Petrera, L. Valore, S. Dagoret-Campagne, C. E. Santo, S. Coutu, A. M. van den Berg, Norberto Fazzini, A. Chou, R. Meyhandan, Marcio Aparecido Muller, H. R. Marquez Falcon, D. Semikoz, S. Reucroft, R. Knapik, G. La Rosa, P. Abreu, Jan Pękala, Hans Klages, John K. Lee, Carola Dobrigkeit, M. Scuderi, J. Rodríguez Martino, A. Anzalone, Gustavo Medina-Tanco, O. Tascau, Karen S. Caballero-Mora, V. de Souza, E. Colombo, L. R. Wiencke, J. G. Gonzalezc, C. Meurer, Ralf Ulrich, V. H. Koanga, S. Ostapchenko, Valerio Pirronello, B. Wundheiler, D. Mandatat, G. Parente, B. E. Smith, J. Hoerandel, Thomas Hebbeker, M. Horvat, Glennys R. Farrar, M. Gonzalez, Paul M. Mantsch, V. M. Olmos-Gilbaja, O. Kroemer, Vasiliki Pavlidou, Luis A. Anchordoqui, Subir Sarkar, J. Chye, G. Miele, B. Wilczynska, Jose Chinellato, R. Sato, Anderson Fauth, R. M. Kieckhafer, L. Villaseñor, Juan Moreno, Alexander Kusenko, A. F. Barbosa, J. Knapp, B. 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Newton, Javier Tiffenberg, N. T. Thao, D. Warner, V. Van Elewyck, G. Rodriguez, Ioana Codrina Maris, H. Dembinski, F. A. S. Rezende, Alejandro Luis Veiga, M. A. Leigui de Oliveira, R. Tcaciuc, Ricardo Vázquez, R. Squartini, John L. Harton, B. R. Becker, Federico Suarez, F. Montanet, J. C. dos Anjos, J. Abraham, T. Paul, E. Strazzeri, T. Asch, Michael DuVernois, Ralph Engel, M. Unger, Miroslav Hrabovsky, L. Voyvodic, Henryk Wilczyński, Tristan Beau, A. Stutz, J. Matthews, M. Ave, B. Connolly, D. Monnier Ragaigne, Ph. Lebrun, Heiko Geenen, C. J.W.P. Timmermans, Daniel Gonzalez, Guenter Sigl, M. Pimenta, Pierre Sokolsky, C. Bleve, C. Lachaud, S. Riggi, C. J. Todero Peixoto, G. De La Vega, S. Harmsma, Vincenzo Rizi, B. Rouillé-D’Orfeuil, C. Morello, K. Payet, M. Ziolkowski, S. L. C. Barroso, R. Bonino, O. Martínez Bravo, V. Grassi, Fabrizio Ortolani, Peter L. Biermann, J. J. Lozano Bahilo, Paolo Privitera, Y. Guardincerri, D. Pakk Selmi-Dei, M. C. Maccarone, T. Pinto, Libor Nozka, K. H. Becker, A. G. Mariazzi, A. D. Supanitsky, J. J. Beatty, Norbert Kunka, A. Dorofeev, D. Nitz, Silvia Mollerach, J. Coppens, G. Matthiae, M. Ambrosio, Markus Risse, U. Cotti, B. Revenu, Julien Aublin, D. Martello, F. Sánchez, Iván Sidelnik, I. Lhenry-Yvon, H. Wahlberg, Marcos Santander, B. Tome, Peter Mazur, G. Tristram, B. L. Lago, C. Aguirre, A. Pichel, Bei Cai, W. Tkaczyk, Diego Harari, E. M. Santos, Bruce R. Dawson, Tim Huege, J. L. Navarro, A. Chiavassa, M. Kaducak, M. C. Medina, O. Blanch-Bigas, F. Arqueros, P. Necesal, APC - Astrophysique des Hautes Energies (APC - AHE), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, 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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, 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)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), APC - Cosmologie, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), APC - THEORIE, 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)-Institut für theoretische Physik, Universität Hamburg (UHH)-Universität Hamburg (UHH), PIERRE AUGER, J., Abraham, P., Abreu, M., Aglietta, C., Aguirre, D., Allard, I., Allekotte, J., Allen, P., Allison, J., Alvarez Muniz, M., Ambrosio, L., Anchordoqui, S., Andringa, A., Anzalone, C., Aramo, S., Argiro', K., Arisaka, E., Armengaud, F., Arneodo, F., Arquero, T., Asch, H., Asorey, P., Assi, B. S., Atulugama, J., Aublin, M., Ave, G., Avila, T., Backer, D., Badagnani, A. F., Barbosa, D., Barnhill, S. L. C., Barroso, P., Bauleo, J. J., Beatty, T., Beau, B. R., Becker, K. H., Becker, J. A., Bellido, S., Benzvi, C., Berat, T., Bergmann, Bernardini, Paolo, X., Bertou, P. L., Biermann, P., Billoir, O., Blanch Biga, F., Blanco, P., Blasi, C., Bleve, H., Blumer, M., Bohacova, C., Bonifazi, R., Bonino, M., Boratav, J., Brack, P., Brogueira, W. C., Brown, P., Buchholz, A., Bueno, R. E., Burton, N. G., Busca, K. S., Caballero Mora, B., Cai, D. V., Camin, L., Caramete, R., Caruso, W., Carvalho, A., Castellina, O., Catalano, G., Cataldi, L., Cazon, R., Cester, J., Chauvin, A., Chiavassa, J. A., Chinellato, A., Chou, J., Chye, P. D. J., Clark, R. W., Clay, E., Colombo, R., Conceicao, B., Connolly, F., Contrera, J., Coppen, A., Cordier, U., Cotti, S., Coutu, C. E., Covault, A., Creusot, A., Cri, J., Cronin, A., Curutiu, S., Dagoret Campagne, K., Daumiller, B. R., Dawson, R. M., de Almeida, C., De Donato, S. J., de Jong, G., De La Vega, W. J. M., de Mello Junior, J. R. T., de Mello Neto, DE MITRI, Ivan, V., de Souza, L., del Peral, O., Deligny, A., Della Selva, C., Delle Fratte, H., Dembinski, C., Di Giulio, J. C., Diaz, C., Dobrigkeit, J. C., D’Olivo, D., Dornic, A., Dorofeev, J. C., dos Anjo, M. T., Dova, D., D’Urso, I., Dutan, M. A., Duvernoi, R., Engel, L., Epele, M., Erdmann, C. O., Escobar, A., Etchegoyen, P., Facal San Lui, H., Falcke, G., Farrar, A. C., Fauth, N., Fazzini, F., Ferrer, S., Ferry, B., Fick, A., Filevich, A., Filipcic, I., Fleck, R., Fonte, C. E., Fracchiolla, W., Fulgione, B., Garcia, D., Garcia Gamez, D., Garcia Pinto, X., Garrido, H., Geenen, G., Gelmini, H., Gemmeke, P. L., Ghia, M., Giller, H., Gla, M. S., Gold, G., Golup, F., Gomez Albarracin, M., Gomez Berisso, R., Gomez Herrero, P., Goncalve, M., Goncalves do Amaral, D., Gonzalez, J. G., Gonzalez, M., Gonzalez, D., Gora, A., Gorgi, P., Gouffon, V., Grassi, A. F., Grillo, C., Grunfeld, Y., Guardincerri, F., Guarino, G. P., Guede, J., Gutierrez, J. D., Hague, J. C., Hamilton, P., Hansen, D., Harari, S., Harmsma, J. L., Harton, A., Haung, T., Hauschildt, M. D., Healy, T., Hebbeker, G., Hebrero, D., Heck, C., Hojvat, V. C., Holme, P., Homola, J., Horandel, A., Horneffer, M., Horvat, M., Hrabovsky, T., Huege, M., Hussain, M., Iarlori, A., Insolia, F., Ionita, A., Italiano, M., Kaducak, K. H., Kampert, T., Karova, B., Kegl, B., Keilhauer, E., Kemp, R. M., Kieckhafer, H. O., Klage, M., Kleifge, J., Kleinfeller, R., Knapik, J., Knapp, D. H., Koang, A., Krieger, O., Kromer, D., Kuempel, N., Kunka, A., Kusenko, G., La Rosa, C., Lachaud, B. L., Lago, D., Lebrun, P., Lebrun, J., Lee, M. A., Leigui de Oliveira, A., Letessier Selvon, M., Leuthold, I., Lhenry Yvon, R., Lopez, A., Lopez Aguera, J., Lozano Bahilo, R., Luna Garcia, M. C., Maccarone, C., Macolino, S., Maldera, Mancarella, Giovanni, M. E., Mancenido, D., Mandat, P., Mantsch, A. G., Mariazzi, I. C., Mari, H. R., Marquez Falcon, Martello, Daniele, J., Martinez, O., Martinez Bravo, H. J., Mathe, J., Matthew, J. A. J., Matthew, G., Matthiae, D., Maurizio, P. O., Mazur, T., Mccauley, M., Mcewen, R. R., Mcneil, M. C., Medina, G., Medina Tanco, A., Meli, D., Melo, E., Menichetti, A., Menschikov, Meurer, C. h. r., R., Meyhandan, M. I., Micheletti, G., Miele, W., Miller, S., Mollerach, M., Monasor, D., Monnier Ragaigne, F., Montanet, B., Morale, C., Morello, J. C., Moreno, C., Morri, M., Mostafa, M. A., Muller, R., Mussa, G., Navarra, J. L., Navarro, S., Nava, P., Necesal, L., Nellen, C., Newman Holme, D., Newton, N. T., Thao, N., Nierstenhoefer, D., Nitz, D., Nosek, L., Nozka, J., Oehlschlager, T., Ohnuki, A., Olinto, V. M., Olmos Gilbaja, M., Ortiz, F., Ortolani, S., Ostapchenko, L., Otero, N., Pacheco, D., Pakk Selmi Dei, M., Palatka, J., Pallotta, G., Parente, E., Parizot, S., Parlati, S., Pastor, M., Patel, T., Paul, V., Pavlidou, K., Payet, M., Pech, J., Pekala, R., Pelayo, I. M., Pepe, Perrone, Lorenzo, S., Petrera, P., Petrinca, Y., Petrov, P. N., Diep, P. N., Dong, P. T., Nhung, A., Pichel, R., Piegaia, T., Pierog, M., Pimenta, T., Pinto, V., Pirronello, O., Pisanti, M., Platino, J., Pochon, P., Privitera, M., Prouza, E. J., Quel, J., Rautenberg, A., Redondo, S., Reucroft, B., Revenu, F. A. S., Rezende, J., Ridky, S., Riggi, M., Risse, C., Riviere, V., Rizi, M., Robert, C., Robledo, G., Rodriguez, M. D., Rodriguez Fria, J., Rodriguezmartino, J., Rodriguez Rojo, I., Rodriguez Cabo, G., Ro, J., Rosado, M., Roth, C., Roucelle, B., Rouille' d’Orfeuil, E., Roulet, A. C., Rovero, F., Salamida, H., Salazar, G., Salina, F., Sanchez, M., Santander, C. E., Santo, E. M., Santo, F., Sarazin, S., Sarkar, R., Sato, V., Scherini, H., Schieler, A., Schmidt, F., Schmidt, T., Schmidt, O., Scholten, P., Schovanek, F., Schussler, S. J., Sciutto, M., Scuderi, A., Segreto, D., Semikoz, M., Settimo, R. C., Shellard, I., Sidelnik, B. B., Siffert, G., Sigl, N., Smetniansky De Grande, A., Smialkowski, R., Smida, A. G. K., Smith, B. E., Smith, G. R., Snow, P., Sokolsky, P., Sommer, J., Sorokin, H., Spinka, R., Squartini, E., Strazzeri, A., Stutz, F., Suarez, T., Suomijarvi, A. D., Supanitsky, M. S., Sutherland, J., Swainc, Z., Szadkowski, J., Takahashi, A., Tamashiro, A., Tamburro, O., Tascau, R., Tcaciuc, D., Thoma, R., Ticon, J., Tiffenberg, C., Timmerman, W., Tkaczyk, C. J., Todero Peixoto, B., Tome', A., Tonachini, I., Torre, D., Torresi, P., Travnicek, A., Tripathi, G., Tristram, D., Tscherniakhovski, M., Tuero, V., Tunnicliffe, R., Ulrich, M., Unger, M., Urbana, J. F., Valdes Galicia, I., Valino, L., Valore, A. M., van den Berg, V., van Elewyck, R. A., Vazquez, D., Veberic, A., Veiga, A., Velarde, T., Ventersc, V., Verzi, M., Videl, L., Villasenor, S., Vorobiov, L., Voyvodic, H., Wahlber, O., Wainber, P., Walker, D., Warner, A. A., Watson, S., Westerhoff, G., Wieczorek, L., Wiencke, B., Wilczynska, H., Wilczynski, C., Wileman, M. G., Winnick, H., Wua, B., Wundheiler, T., Yamamoto, P., Younk, E., Zasb, D., Zavrtanik, M., Zavrtanik, A., Zech, A., Zepeda, M., Ziolkowski, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), 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), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut für theoretische Physik, KVI - Center for Advanced Radiation Technology, Research unit Astroparticle Physics, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut für theoretische Physik, Guarino, Fausto, D'Urso, Domenico, Aramo, Carla, DELLA SELVA, Angelo, Miele, Gennaro, Pisanti, Ofelia, Valore, Laura, and Auger, Collaboration

Subjects
[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astronomy, Osservatorio Pierre Auger, Astrophysics, GALAXY CLUSTER SURVEY, auger, 01 natural sciences, High energy cosmic ray, Raggi cosmici, Astrophysical jet, GMF, Observatory, Ultra-high-energy cosmic ray, 010303 astronomy & astrophysics, Physics, BL-LACERTAE, Greisen–Zatsepin–Kuz’min effect, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], ORIGIN, UHECR, Astrophysics (astro-ph), Settore FIS/01 - Fisica Sperimentale, Astrophysics::Instrumentation and Methods for Astrophysics, Pierre Auger Observatory, GZK, Radiación cósmica, Anisotropía, CATALOG, observatory, ddc:540, EGMF, CUTOFF, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, RELATIVISTIC JETS, Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, Cosmic background radiation, FOS: Physical sciences, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, ACCELERATION, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, extra-galactic, PARTICLES, AGN, Astrophysics::Galaxy Astrophysics, Ciencias Exactas, ANISOTROPY, high energy cosmic rays, Sciami atmosferici, 010308 nuclear & particles physics, Física, Astronomy and Astrophysics, CENTAURUS, Galaxy, Experimental High Energy Physics
Abstract

Data collected by the Pierre Auger Observatory provide evidence for anisotropy in the arrival directions of the cosmic rays with the ighest-energies, which are correlated with the positions of relatively nearby active galactic nuclei (AGN) [Pierre Auger Collaboration, Science 318 (2007) 938]. The correlation has maximum significance for cosmic rays with energy greater than ~6 x 1019 eV and AGN at a distance less than ~75 Mpc. We have confirmed the anisotropy at a confidence level of more than 99% through a test with parameters specified a priori, using an independent data set. The observed correlation is compatible with the hypothesis that cosmic rays with the highest-energies originate from extra-galactic sources close enough so that their flux is not significantly attenuated by interaction with the cosmic background radiation (the Greisen–Zatsepin–Kuz’min effect). The angular scale of the correlation observed is a few degrees, which suggests a predominantly light composition unless the magnetic fields are very weak outside the thin disk of our galaxy. Our present data do not identify AGN as the sources of cosmic rays unambiguously, and other candidate sources which are distributed as nearby AGN are not ruled out. We discuss the prospect of unequivocal identification of individual sources of the highest-energy cosmic rays within a few years of continued operation of the Pierre Auger Observatory., Facultad de Ciencias Exactas

Published
2008

27. Photon air showers at ultra-high energy and the photonuclear cross-section

Author

Dariusz Gora, Dieter Heck, Ralph Engel, B. Wilczyńska, Piotr Homola, Markus Risse, Henryk Wilczyński, and J. Pekala

Subjects
Physics, High energy, Photon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Extrapolation, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, FOS: Physical sciences, Observable, Astrophysics, Nuclear physics, Cross section (physics), Shower, High Energy Physics - Phenomenology, Air shower, High Energy Physics - Phenomenology (hep-ph), Orders of magnitude (time)
Abstract

Experimental conclusions from air shower observations on cosmic-ray photons above 10^19 eV are based on the comparison to detailed shower simulations. For the calculations, the photonuclear cross-section needs to be extrapolated over several orders of magnitude in energy. The uncertainty from the cross-section extrapolation translates into an uncertainty of the predicted shower features for primary photons and, thus, into uncertainties for a possible data interpretation. After briefly reviewing the current status of ultra-high energy photon studies, the impact of the uncertainty of the photonuclear cross-section for shower calculations is investigated. Estimates for the uncertainties in the main shower observables are provided. Photon discrimination is shown to be possible even for rapidly rising cross-sections. When photon-initiated showers are identified, it is argued that the sensitivity of photon shower observables to the photonuclear cross-section can in turn be exploited to constrain the cross-section at energies not accessible at colliders., Comment: Based on a talk presented at the international conference "From Colliders to Cosmic Rays", Prague, September 7-13 (2005)

Published
2005
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28. Properties and performance of the prototype instrument for the Pierre Auger Observatory

Author

J. Gitto, B. Wilczynska, Miguel Mostafá, S. Nigro, D. Allard, Zbigniew Szadkowski, P. Gouffon, W. E. Slater, Rodrigo Pelayo, T. Dang-Quang, A. Cordero, Danilo Zavrtanik, Matthias Kleifges, H. Spinka, M. Trombley, G. Maurin, A. Carreño, Germano Guedes, F. Cohen, G. Martin, Olivier Deligny, Paul Sommers, Gennaro Miele, Tanguy Pierog, C. Aramo, M. Videla, K. Gibbs, R. Baggio, R. Andrews, R. Meyhandan, D. Nicotra, R. Mussa, N. Playez, Karl-Heinz Kampert, Antonio Insolia, Q. Zhu, M. Lucano, G. Rodriguez, Luigi Rosa, Nicolo Cartiglia, A. C. Rovero, Maria Giller, J. Abraham, C. J. Todero Peixoto, Vincenzo Rizi, Antonella Castellina, S. Ranchon, Martina Bohacova, T. Yamamoto, Bárbara María Civit, Nadia Pastrone, Carlos Escobar, P. V.M. Da Silva, M. Cuautle, J. J. Beatty, Norbert Kunka, D. Nitz, G. Matthiae, M. Ambrosio, L. Voyvodic, H. Gemmeke, Carlo Vigorito, M. Patel, Agueda Castagna de Vargas, Antoine Letessier-Selvon, M. A. L. de Oliveira, Jose Chinellato, G. Raia, P. Walker, C. Germain-Renaud, John Swain, Y. Ma, C. Guerard, D. Supanitsky, M. Prouza, G. Wieczorek, L. G. Dos Santos, A. Cordier, K. Arisaka, D. Pham-Ngoc, P. Eschstruth, R. López, Bianca Keilhauer, E. Ponce, Corbin Covault, Alejandro Luis Veiga, Piotr Homola, Helio Nogima, J. C. Arteaga, E. Menichetti, I. Lhenry-Yvon, Alexander Grillo, Petr Schovanek, P. Pham-Trung, Enrique Zas, L. A. de Carvalho, D. Warner, R. Gumbsheimer, A. Fernandez, A. Chou, E. H. Pasaye, M. Richten, Jan Pękala, Hans Klages, A. Chiavassa, V. Verzi, Lorenzo Cazon, C. Morello, S. Coutu, S. Román, Miroslav Hrabovsky, C. H. Wiebusch, Arnulfo Zepeda, Norberto Fazzini, H. Bluemer, A. Lopez Agüera, K. Smith, Y. Jerónimo, A. Dye, Marta Anguiano, A. F. Barbosa, Dariusz Gora, C. Pryke, P. Bello, Alberto Filevich, G. Parente, Manuel Nuñez, Markus Roth, John Matthews, S. L. C. Barroso, F. Meyer, E. Bollmann, H. Glass, Marco Aglietta, T. A. Porter, Marcos Santander, Juan Carlos D'Olivo, P. Clark, F. V. Siguas, Peter Mazur, T. Vo-Van, J. Knapp, E. Cormier, Gaetano Salina, Ricardo Vázquez, Carola Dobrigkeit, A. Risi, M. Chiosso, S. Reucroft, P. Tuckey, E. Moreno, D. Barnhill, Miroslav Palatka, N. Smetniansky-De Grande, A. V. Dorofeev, Fausto Guarino, Piera Luisa Ghia, M. Vlcek, Paul M. Mantsch, Anderson Fauth, W. Fulgione, Peter L. Biermann, X. Bai, P.F. Manfredi, Alan Watson, E. Berman, Etienne Parizot, T. Bergmann, J. C. Meza, Luis N. Epele, N. Martínez, G. J. Thornton, Hermann-Josef Mathes, D. Hoffer, A. Della Selva, C. Grunfeld, Paolo Privitera, Darko Veberič, Rossella Caruso, Mohammed A Mohammed, J.M. Brunet, D.V. Camin, Carlos Hojvat, J. Alvarez Muñiz, P. Matussek, Ralph Engel, H. Nassini, L. Perrone, Jonny Kleinfeller, M. Mcewen, J.N. Capdevielle, J. Chye, Ernesto Kemp, I. C. Aguirre, Warner A. Miller, S. Ostaptchenko, J. F. Valdés, Daw Don Cheam, Tristan Beau, A. Menshikov, A. Tamashiro, J. W. Cronin, C. Medina, A. de Capoa, Jan Ridky, D. Monnier-Ragaigne, G. Tristram, M. Melocchi, C. Uribe Estrada, L. Villaseñor, P. Facal San Luis, Heiko Geenen, Markus Risse, U. Cotti, N. Chávez, Sergio Sciutto, R. R. McNeil, M. G. Do Amaral, M. Gómez Berisso, R. C. Shellard, Carla Bonifazi, Jose A. Bellido, Isabel Pedraza, D. Melo, Federico Suarez, Ofelia Pisanti, D. Nosek, Sergio Petrera, F. Sánchez, A. Pérez-Lorenzana, Kai Daumiller, L. Jiang, A. Ferrero, M. Zavrtanik, Daniel R Claes, H. Bui-Duc, D. Ravignani, Chao Zhang, Lukas Nellen, Beatriz García, P. Petrinca, J. Rodriquez, Sabrina Casanova, C. Song, Roger W Clay, V. de Souza, T. Thouw, Stefano Argiro, Luis A. Anchordoqui, L. Prado Junior, E. Gámez, R. Cester, P.W. Cattaneo, P. S. Allison, S. Atulugama, Catherine Newman-Holmes, Maria-Teresa Dova, T. Waldenmaier, T. Suomijärvi, K. H. Becker, A. G. Mariazzi, M. Kutschera, A. Filipčivč, J. Cotzomi, P.F. Gómez Vitale, J. Darling, Jeffrey Brack, Humberto Ibarguen Salazar, Dieter Heck, Martin Urban, M. D. Roberts, Antonio Velarde, V. Scherini, R. Fonte, M. Horvat, G. Navarra, Pierre Darriulat, F. Nerling, Jose M Hernandez, Brian Fick, M. J. Markus, R. Sato, C. Vargas, J. C. dos Anjos, M. Ave, E. Casimiro, M. Boratav, Gualberto Avila, P. Bauleo, Ingomar Allekotte, Michael DuVernois, Angela V. Olinto, Gustavo Medina-Tanco, G. Sequeiros-Haddad, V. Tunnicliffe, L. Manhaes, S. Jaminion, J. S. Díaz, J. Lloyd-Evans, B. Revenue, E. Marques, C. Robledo, José Eduardo Martinez, E. Shibuya, J. A.J. Matthews, Xavier Bertou, N. R. Wild, Alberto Etchegoyen, T. Ohnuki, J. S. Gonzalez, J. Grygar, Iuri Muniz Pepe, A. Cillis, Francois Vernotte, D. Tscherniakhovski, L. De Bruijn, S. Dagoret-Campagne, J. B. Rafert, Gregory R Snow, P. Billoir, Henrique M. J. Barbosa, John L. Harton, N. Peshman, T. Paul, M. C. Medina, Valerio Re, O. Martineau, D. Maurizio, R. Ticona, A. Goodwin, R. Biral, Carmen García, W. Tkaczyk, F. Hasenbalg, Antonella Boselli, M. Lapolla, V. Cabrera, M. Kaducak, Michael Albrow, Lodovico Ratti, Bruce R. Dawson, J. Rodriquez Martino, A. K. Tripathi, Rafael E. Luna, J. M. G. Castro, C. Lachaud, Thomas McCauley, M. E. Mancenido, H. C. Reis, A. Creusot, O. Martinez, Andreas Kopmann, V. Grassi, Henryk Wilczyński, M., Ambrosio, Aramo, Carla, DELLA SELVA, Angelo, Guarino, Fausto, Miele, Gennaro, Pisanti, Ofelia, The Pierre Auger, C. o. l. l. a. b. o. r. a. t. i. o. n., J., Abraham, M., Aglietta, I. C., Aguirre, M., Albrow, D., Allard, I., Allekotte, P., Allison, J., Alvarez Muniz, M. G., do Amaral, L., Anchordoqui, R., Andrew, M., Anguiano, J. C., dos Anjo, C., Aramo, S., Argiro, K., Arisaka, J. C., Arteaga, S., Atulugama, M., Ave, G., Avila, R., Baggio, X., Baib, A. F., Barbosa, H. M. J., Barbosa, D., Barnhill, S. L. C., Barroso, P., Bauleo, J., Beatty, T., Beau, K. H., Becker, J. A., Bellido, P., Bello, T., Bergmann, E., Berman, X., Bertou, P., Biermann, P., Billoir, R., Biral, H., Bluemer, M., Bohacova, E., Bollmann, C., Bonifazi, M., Borat, A., Boselli, J., Brack, J. M., Brunet, H., Bui Duc, V., Cabrera, D. V., Camin, J. N., Capdevielle, A., Carreno, N., Cartiglian, R., Caruso, L. A., de Carvalho, S., Casanovabk, E., Casimiro, A., Castellina, J., Castrol, P. W., Cattaneo, L., Cazon, R., Cester, N., Chavez, D., Cheam, A., Chiavassa, J. A., Chinellato, M., Chiosso, A., Chou, J., Chye, A., Cilli, B., Civit, D., Clae, P. D. J., Clark, R. W., Clay, F., Cohen, A., Cordero, A., Cordier, E., Cormier, J., Cotzom, U., Cotti, S., Coutu, C. E., Covaul, A., Creusot, J. W., Cronin, M., Cuautl, S., Dagoret Campagne, T., Dang Quang, P., Da Silva, J., Darling, P., Darriulat, K., Daumiller, B. R., Dawson, L., de Bruijn, A., De Capoa, M. A. L., de Oliveira, V., de Souza, A., Della Selva, O., Deligny, J. C., Diaz, C., Dobrigkeit, J. C., D’Olivo, A., Dorofe, M. T., Dova, A., Dyeam, M. A., Duvernoi, R., Engel, L. N., Epele, P., Eschstruth, C. O., Escobar, A., Etchegoyen, P., Facal San Lui, A. C., Fauth, N., Fazzini, A., Fernandez, A. M. J., Ferrero, B., Fick, A., Filevich, A., Filipcicat, R., Fonteaw, W., Fulgione, E., Gamez, B., Garcia, C. A., Garcia, H., Geenen, H., Gemmeke, C., Germain Renaud, P. L., Ghia, K., Gibb, M., Giller, J., Gitto, H., Gla, M., Gomez Berissof, P. F., Gomez Vitale, J., Gonzalez, D., Gora, A., Goodwin, P., Gouffon, V., Grassi, A. F. Grillo C., Grunfeld, J., Grygar, F., Guarino, G., Guede, C., Guerard, R., Gumbsheimer, J. L., Harton, F., Hasenbalg, D., Heck, J. M., Hernandez, D., Hoffer, C., Hojvat, P., Homola, M., Horvat, M., Hrabovsky, A., Insolia, S., Jaminion, Y., Jeronimo, L., Jiang, M., Kaduca, K. H., Kampert, B., Keilhauerx, E., Kemp, H., Klage, M., Kleifge, J., Kleinfeller, J., Knapp, A., Kopmann, N., Kunka, M., Kutschera, C., Lachaud, M., Lapolla, A., Letessier Selvon, I., Lhenry Yvon, J., Lloyd Evan, R., Lopez, A., Lopez Aguera, M., Lucano, R., Luna, Y., Mab, M. E., Mancenido, P. F., Manfredi, L., Manhae, P., Mantsch, A. G., Mariazzi, M. J., Marku, G., Martin, O., Martineau, J., Martinez, N., Martineza, O., Martınez, H. J., Mathe, J. A. J., Matthew, J., Matthewsa, G., Matthiae, E., Marque, P., Matussek, G., Maurin, D., Maurizio, P., Mazur, T., Mccaulely, M., Mcewen, R. R., Mcneil, C., Medina, M. C., Medina, G., Medina Tanco, D., Melo, M., Melocchi, E., Menichetti, A., Menshikova, F., Meyer, R., Meyhandan, J. C., Mez, G., Miele, W., Miller, M., Mohammed, D., Monnier Ragaigne, C., Morello, E., Moreno, M., Mostafa, R., Mussa, H., Nassin, G., Navarra, L., Nellena, F., Nerling, C., Newman Holme, D., Nicotra, S., Nigro, D., Nitz, H., Nogim, D., Nosek, M., Nunezl, T., Ohnuki, A., Olinto, S., Ostaptchenko, M., Palatka, G., Parente, E., Parizot, E. H., Pasaye, N., Pastrone, M., Patel, T., Paulk, I., Pedraza, J., Pekala, R., Pelay, I. M., Pepeb, A., P!erez Lorenza, Perrone, Lorenzo, N., Peshmana, S., Petrera, P., Petrinca, D., Pham Ngoc, P., Pham Trung, T., Pierog, O., Pisanti, N., Playez, E., Ponce, T. A., Porter, L., Prado Junior, P., Privitera, M., Prouza, C. L., Pryke, J. B., Raferta, G., Raia, S., Ranchon, L., Ratti, D., Ravignani, V., Re, H. C., Rei, S., Reucrof, B., Revenueu, M., Richter, J., Ridkya, A., Risi, M., Risse, V., Rizi, M. D., Robert, C., Robled, G., Rodriguez, J., Rodriquezaw, J., Rodriquez Martinoab, S., Rom!anl, L., Rosa, M., Roth, A. C., Rovero, H., Salaza, G., Salina, F., Sanchez, M., Santander, L. G., dos Santo, R., Sato, P., Schovaneka, V., Scherini, S. J., Sciutto, G., Sequeiros Haddada, R. C., Shellard, E., Shibuya, F. V., Sigua, W., Slater, N., Smetniansky De Grande, K., Smith, G. R., Snowal, P., Sommer, C., Song, H., Spink, F., Suarez, T., Suomijarvi, D., Supanitsky, J., Swaink, Z., Szadkowski, A., Tamashiro, G. J., Thornton, T., Thou, R., Ticon, W., Tkaczyk, C. J., Todero Peixoto, A., Tripathio, G., Tristram, M., Trombleya, D., Tscherniakhovski, P., Tuckey, V., Tunnicliffe, M., Urban, C., Uribe Estrada, J. F., Valde, A., Varga, C., Varga, R., Vazquez, D., Veberic, A., Veiga, A., Velard, F., Vernottebe, V., Verzi, M., Videla, C., Vigorito, L. M., Villasenorai, M., Vlceka, L., Voyvodi, T., Vo Vanap, T., Waldenmaier, P., Walker, D., Warner, A. A., Watson, Wiebusch, C. h., G., Wieczore, B., Wilczynska, H., Wilczynski, N. R., Wild, T., Yamamoto, E., Za, D., Zavrtanik, M., Zavrtanik, A., Zeped, C., Zhang, Q., Zhu, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), 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), Institut de Physique Nucléaire d'Orsay (IPNO), PIERRE AUGER, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Photomultiplier, Osservatorio Pierre Auger, Cosmic ray, Auger observatory, Astrophysics, Settore ING-INF/01 - Elettronica, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Data acquisition, Observatory, 0103 physical sciences, Extensive air showers, 010306 general physics, Ultra high energy cosmic rays, Instrumentation, Cosmic rays, Pierre Auger Observatory, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Raggi Cosmici di altissima energia, Física, Stage (hydrology), Prototype instrument, Field conditions
Abstract

Construction of the first stage of the Pierre Auger Observatory has begun. The aim of the Observatory is to collect unprecedented information about cosmic rays above 10^18 eV. The first phase of the project, the construction and operation of a prototype system, known as the engineering array, has now been completed. It has allowed all of the sub-systems that will be used in the full instrument to be tested under field conditions. In this paper, the properties and performance of these sub-systems are described and their success illustrated with descriptions of some of the events recorded thus far., La lista completa de autores puede verse en el archivo asociado., Facultad de Ciencias Exactas

Published
2004

29. Was the Highest Energy Cosmic Ray a Photon?

Author

Homola, P., Risse, M., Góra, D., Heck, D., Klages, H., Pȩkala, J., Wilczyńska, B., and Henryk Wilczyński

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astrophysics
Abstract

The hypothetical photonic origin of the most energetic air shower detected by the Fly's Eye experiment is discussed. The method used for the analysis is based on Monte Carlo simulations including the effect of precascading of ultra-high energy (UHE) photons in the geomagnetic field. The application of this method to data expected from the Pierre Auger Observatory is discussed. The importance of complementing the southern Auger location by a northern site for UHE photon identification is pointed out., Comment: 12 pages, 3 figures, presented at the Cracow Epiphany Conference on Astroparticle Physics, January 2004

Published
2004
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30. Critical exponents and phase transition in gold nuclei fragmentation at energies 10.6 and 4.0 GeV/nucleon

Author

D. Kudzia, B. Wilczynska, and Henryk Wilczyński

Subjects
Physics, Nuclear and High Energy Physics, Phase transition, Particle physics, FOS: Physical sciences, Nuclear matter, Universality (dynamical systems), Nuclear physics, Fragmentation (mass spectrometry), Nuclear emulsion, Ising model, Nuclear Experiment (nucl-ex), Nucleon, Nuclear Experiment, Critical exponent
Abstract

An attempt to extract critical exponents gamma, beta and tau from data on gold nuclei fragmentation due to interactions with nuclear emulsion at energies 4.0 A GeV and 10.6 A GeV is presented. Based on analysis of Campi's 2nd charge moments, two subsets of data at each energy are selected from the inclusive data, corresponding to 'liquid' and 'gas' phases. The extracted values of critical exponents from the selected data sets are in agreement with predictions of 'liquid-gas' model of phase transition., Comment: 21 pages, 15 figures

Published
2002
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31. Backward emitted protons in interactions of neutrinos with nuclei in photoemulsion

Author

Yu.A. Batusov, V. Klukhin, J. Gress, Barbara Wosiek, D. Coppage, A. Bakich, O. K. Egorov, W. Wolter, V. A. Gapienko, V. I. Koreshev, V. V. Shamanov, P. V. Pitukhin, O.M. Kuznetsov, R. Rosenbladt, B. Wilczynska, N. Kwak, H. A. Rubin, V.V. Lyukov, M.I. Dayon, V. I. Baranov, M. Ivanova, A. Jurak, Andrzej Olszewski, V. Smirnitsky, P. Goritchev, Henryk Wilczyński, E. A. Pozharova, R. Ammar, V. M. Rappoport, J. J. Lord, V.I. Sirotenko, R. J. Wilkes, E. D. Kolganova, L. Voyvodic, H. Tchernev, S. Krzywdzinski, V. V. Ammosov, L.S. Peak, R. Stump, T. H. Burnett, R. Riemer, W. M. Smart, R. Davis, and S.A. Bunyatov

Subjects
Physics, Nuclear reaction, Range (particle radiation), Particle physics, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Hadron, Charged particle, Ion, Nuclear physics, Baryon, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Nucleon, Engineering (miscellaneous)
Abstract

Backward emitted protons with momentump>0.3 GeV/c in interactions of neutrino in the energy range 10–200 GeV with photoemulsion nuclei were investigated. Energy spectrum slope parameter of backward protons was measured to beT0=48.9±7.9 MeV. TheA-dependence power index of relative mean yield of backward protons was found to bea=0.68±0.12. A drop in the mean yield of backward protons at the four momentum squared over ∼15 (GeV/c)2 (the neutrino energy over ∼50 GeV) was observed.

Published
1992

32. Charged particle production in the Pb+Pb system at 158GeV/cper nucleon

Author

C. J. Waddington, D. Kudzia, B. S. Nilsen, Michael Cherry, R. Holynski, Adam Trzupek, A. Dabrowska, Henryk Wilczyński, W. Wolter, P. Deines-Jones, Krzysztof Wozniak, Barbara Wosiek, B. Wilczynska, M. Szarska, J. P. Wefel, and Andrzej Olszewski

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, Charged particle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Nuclear Experiment, 010306 general physics, Nucleon, Particle Physics - Experiment
Abstract

Charged particle multiplicities from high multiplicity central interactions of 158 GeV/nucleon Pb ions with Pb target nuclei have been measured in the central and far forward projectile spectator regions using emulsion chambers. Multiplicities are significantly lower than predicted by Monte Carlo simulations. We examine the shape of the pseudorapidity distribution and its dependence on centrality in detail., Comment: 17 pages text plus 12 figures in postscript 12/23/99 -- Add TeX version of source

Published
2000

33. Multifractal analysis of nucleus-nucleus interactions

Author

W. V. Jones, K. Sengupta, A. Jurak, A. Dabrowska, Krzysztof Wozniak, Barbara Wosiek, C. J. Waddington, W. Wolter, M. Szarska, Michael Cherry, Andrzej Olszewski, Adam Trzupek, B. Wilczynska, Phyllis S. Freier, R. Holynski, Henryk Wilczyński, and J. P. Wefel

Subjects
Physics, Nuclear reaction, Particle physics, Nuclear Theory, Hadron, Multifractal system, Fractal analysis, law.invention, Nuclear physics, Fractal, law, Intermittency, Nuclear Experiment, Nucleon, Randomness
Abstract

We have performed a multifractal ([ital G]-moment) analysis of 14.6--200 GeV/nucleon nucleus-nucleus and 200--800 GeV proton-nucleus interactions from KLM and Fermilab E-90 and E-508 emulsion data, including explicit corrections for the finite statistical sample. The corrected slopes of the [ital G] moments for protons, [sup 16]O, [sup 28]Si, and [sup 32]S nuclei show only slight evidence for departures from random behavior, while the normalized entropies appear to show a more consistent departure from randomness, particularly for protons. Given the size of the uncertainties, the results of the fractal analysis are not consistent either with results of intermittency analyses for nucleus-nucleus collisions or with the nonrandom behavior previously reported for leptonic and hadronic collisions. However, because of the effects of statistical noise, the fractal analysis is not as sensitive as the intermittency analysis for detecting nonrandom fluctuations.

Published
1993

34. Sigma --nucleus interactions in emulsion at 350 GeV

Author

Krzysztof Wozniak, J. J. Lord, Henryk Wilczyński, M. Szarska, R. J. Wilkes, and W. Wolter

Subjects
Physics, Particle physics, Nuclear Theory, Hadron, Hyperon, Elementary particle, Inelastic scattering, Sigma baryon, Nuclear physics, Baryon, Pion, High Energy Physics::Experiment, Nuclear emulsion, Nuclear Experiment
Abstract

Experimental data on multiplicities and angular distributions of heavy ionizing and shower particles in inelastic interactions of 350 GeV ${\ensuremath{\Sigma}}^{\ensuremath{-}}$ hyperons in nuclear emulsion are presented. The data are compared with the results of other experiments on proton and pion interactions in emulsion at energies of 60-800 GeV. We observe no significant differences in the global characteristics of strange hyperon interactions relative to nonstrange baryon interactions at equivalent energies, other than those attributable to the differing cross sections.

Published
1993

35. Observation of associated bottom production and decay in a high-energy hadron interaction

Author

J. J. Lord, S. C. Strausz, M. Fuki, R. Holynski, J. Iwai, M. Jezabek, Osamu Miyamura, Barbara Wosiek, A. Jurak, T. Tabuki, Y. Takahashi, Thomas A. Parnell, W. Wolter, R. J. Wilkes, W. V. Jones, B. Wilczynska, T. H. Burnett, T. Ogata, H. Oda, T. Tominaga, Henryk Wilczyński, T. Hayashi, John C. Gregory, S. Dake, and J. P. Wefel

Subjects
Physics, Particle physics, Decay scheme, Meson, Computer Science::Information Retrieval, High Energy Physics::Phenomenology, Hadron, Elementary particle, Pair production, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, High Energy Physics::Experiment, Production (computer science), Energy (signal processing), Boson
Abstract

Production and decay of a pair of bottom mesons, one charged and one neutral, have been observed in a 200-TeV cosmic-ray helium interaction in an emulsion chamber. Analysis of the event indicates that the charged meson decays most probably via a {ital b}{r arrow}{ital u} quark transition, which would imply a nonzero {ital V}{sub {ital u}{ital b}} element in the Kobayashi-Maskawa matrix. The simplest decay scheme consistent with the data is {ital B}{sup {minus}}{r arrow}{ital D}{sub {ital s}}{sup {minus}}{eta}{eta}. The neutral decay is interpreted as {ital B}{sup 0}{r arrow}{ital D}{sup {minus}}{ital e}{sup +}{nu}.

Published
1990

36. JACEE long duration balloon flights

Author

J. Iwai, T. Ogata, W. V. Jones, W. F. Fountain, J. Gregory, Barbara Wosiek, J. J. Lord, S. C. Strausz, T. Tabuki, T. Hayashi, E. Roberts, H. Oda, Y. Takahashi, Y. Tominaga, J. P. Wefel, Shoji Dake, John W. Watts, R. Holynski, J. Derrickson, Osamu Miyamura, M. Fuki, Henryk Wilczyński, T. H. Burnett, Thomas A. Parnell, W. Wolter, B. Wilczynska, A. Jurak, and R. J. Wilkes

Subjects
Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, High Energy Physics::Experiment, Cosmic ray, Astrophysics, Nuclear Experiment, Balloon, Short duration, Particle detector
Abstract

JACEE balloon‐borne emulsion chamber detectors are used to observe the spectra and interactions of cosmic ray protons and nuclei in the energy range 1–100A TeV. Experience with long duration mid‐latitude balloon flights and characteristics of the detector system that make it ideal for planned Antarctic balloon flights are discussed.

Published
1990

37. Intra-nuclear cascading in deep inelastic scattering of 150 GeV muons in emulsion

Author

W. Czyz, J. Florian, D. Petersen, L. Litt, J. J. Lord, Barbara Wosiek, J. Kiley, W. Wolter, B. Furmanska, R. Ball, A. Jurak, G. Nowak, M. Atac, Henryk Wilczyński, S. Krzywdzinski, R. J. Wilkes, L. Hand, R. Holynski, A.L. Read, K. Gottfried, L. Voyvodic, A. Kotlewski, and H. Scott

Subjects
Nuclear reaction, Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), Nuclear Theory, Hadron, Elementary particle, Fermion, Inelastic scattering, Deep inelastic scattering, Nuclear physics, Antimatter, Nuclear Experiment, Engineering (miscellaneous)
Abstract

An experimental search is presented for the existence of intra-nuclear cascading which, for small values of the Bjorken scaling variable ω, is the only mechanism of particle multiplication in the target nucleus. Our data indicate that cascading does exist as one of the effective mechanisms of particle multiplication in μ-nucleus collisions. No significant variation of the observed multiplicity with ω is observed.

Published
1979

38. One- and two-dimensional analysis of the factorial moments in 200 GeV/nucleonp,O16, andS32interactions with Ag and Br nuclei

Author

O. E. Pruet, W. V. Jones, M. Szarska, R. Holynski, J. P. Wefel, Krzysztof Wozniak, Barbara Wosiek, Henryk Wilczyński, W. Wolter, Phyllis S. Freier, B. Wilczynska, K. H. Moon, Andrzej Olszewski, A. Jurak, Adam Trzupek, and C. J. Waddington

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Factorial, Particle physics, Nuclear Theory, Space (mathematics), Bin, Nuclear physics, Distribution (mathematics), Pseudorapidity, High Energy Physics::Experiment, Nuclear emulsion, Nuclear Experiment, Nucleon
Abstract

Scaled factorial moments, corrected for the shape of the single-particle pseudorapidity distribution, are analyzed in pseudorapidity and in two-dimensional (pseudorapidity and azimuth angle) space. An intermittent, power-law growth of the moments with decreasing bin size is found, with two-dimensional analysis revealing a much stronger effect than for one-dimensional for nucleus-nucleus data. The intermittent patterns are more evident for proton-nucleus than for nucleus-nucleus collisions, with the heaviest nucleus, {sup 32}S, showing the weakest effect.

Published
1989

39. Nucleus-nucleus interactions at 14.6, 60 and 200 GeV/nucleon

Author

W. Wolter, M. Szarska, H. von Gersdorff, B. Wilczynska, I. G. Park, L. M. Barbier, J. P. Wefel, Henryk Wilczyński, Andrzej Olszewski, Krzysztof Wozniak, Barbara Wosiek, R. Holynski, A. Jurak, Joseph I. Kapusta, Phyllis S. Freier, O. E. Pruet, C. J. Waddington, W. V. Jones, and K. H. Moon

Subjects
Nuclear physics, Nuclear reaction, Physics, Nuclear and High Energy Physics, medicine.anatomical_structure, Hadron, medicine, Fluid mechanics, Elementary particle, Multiplicity (chemistry), Nuclear matter, Nucleon, Nucleus
Published
1989

40. Evidence for Intermittent Patterns of Fluctuations in Particle Production in High-Energy Interactions in Nuclear Emulsion

Author

Andrzej Olszewski, H. von Gersdorff, C. J. Waddington, L. M. Barbier, Henryk Wilczyński, R. Holynski, Barbara Wosiek, O. E. Pruet, J. F. Amundson, W. Wolter, J. P. Wefel, A. Jurak, B. Wilczynska, Phyllis S. Freier, and W. V. Jones

Subjects
Quark, Nuclear reaction, Physics, Nuclear Theory, General Physics and Astronomy, Gluon, Nuclear physics, Strange matter, Pseudorapidity, Emulsion, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear emulsion, Nuclear Experiment, Nucleon
Abstract

The method of scaled factorial moments is used to study short-range fluctuations in the pseudorapidity distributions of particles produced in high-energy interactions in nuclear emulsion. An intermittent behavior of the fluctuations is clearly observed in both proton (200 and 800 GeV) and oxygen (60 and 200 GeV/nucleon) beam interactions in emulsion.

Published
1989

41. Production and decay of F+(2030) observed in νμ interactions in emulsion

Author

P. V. Pitukhin, V.S. Kaftanov, D. Coppage, S.A. Bunyatov, A. Jurak, R. Ammar, E.A. Pozharova, R. Holynski, R. Riemer, Henryk Wilczyński, M. Ivanova, W. M. Smart, G. Nowak, K. Bogomolov, I. V. Makhlyueva, V. I. Koreshev, V.V. Lyukov, M. A. Kubantsev, A.O. Weissenberg, R. Davis, S. Velen, V.I. Efremenko, R. Stump, W. Wolter, B. Furmanska, J. J. Lord, V.I. Sirotenko, N. Kolganova, V.A. Smirnitsky, H. Tchernev, T. H. Burnett, V.M. Sidorov, V.A. Yarba, L. Voyvodic, A. Belkov, V. A. Gapienko, O.M. Kuznetsov, O.K. Egorov, R. J. Wilkes, V.G. Shevchenko, V. V. Ammosov, H. Kautzky, P.A. Goritchev, R. Rosenbladt, Vyacheslav Klyukhin, J. Babecki, S. Krzywdzinski, N. Kwak, Barbara Wosiek, and V. I. Baranov

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Stack (abstract data type), Meson, Emulsion, Bubble chamber, Nuclear emulsion, Fermilab, Atomic physics, Event (particle physics), Charged current
Abstract

An event representing the production and decay of the charmed F+ meson has been identified by means of a 3-constraint fit to decay hypothesis F+ → π+π+π−π0, in which both γ-rays from the π0 converted. The event was produced by a charged current νμ interaction in an emulsion stack located inside the Fermilab 15-foot bubble chamber. The F+ traveled 50 μm, corresponding to a proper time of 1.4 × 10−13 seconds, before decaying in flight. Its mass was determined to be 2017 ± 25MeV.

Published
1980

42. Central collisions of 14.6, 60, and 200 GeV/nucleonO16nuclei in nuclear emulsion

Author

R. Holynski, C. J. Waddington, L. M. Barbier, W. V. Jones, Phyllis S. Freier, Henryk Wilczyński, W. Wolter, B. Wilczynska, Barbara Wosiek, J. P. Wefel, O. E. Pruet, Andrzej Olszewski, and A. Jurak

Subjects
Physics, Nuclear reaction, Particle physics, Isotope, Nuclear Theory, General Physics and Astronomy, Multiplicity (mathematics), Nuclear physics, Pseudorapidity, Isotopes of bromine, High Energy Physics::Experiment, Nuclear emulsion, Nuclear Experiment, Nucleon
Abstract

Central collisions of /sup 16/O nuclei with the /sup 107/Ag and /sup 80/Br nuclei in nuclear emulsion at 14.6, 60, and 200 GeV/nucleon are compared with proton-emulsion data at equivalent energies. The multiplicities of produced charged secondaries are consistent with the predictions of superposition models. At 200 GeV/nucleon the central particle pseudorapidity density is 58 +- 2 for those events with multiplicities exceeding 200 particles.

Published
1988

43. Observation of charmed F

Author

B. Furmanska, S. Valen, V.I. Efremenko, A. Jurak, V. I. Baranov, S.A. Bunyatov, N. Kolganova, R. Stump, R. Riemer, W. Smart, M. Ivanova, R. J. Wilkes, V. Shevchenko, V. Kaftanov, I. V. Makhlyueva, V. I. Koreshev, O.K. Egorov, Henryk Wilczyński, J. J. Lord, V.I. Sirotenko, M. A. Kubantsev, V.A. Smirnitsky, V.A. Yarba, E.A. Pozharova, A.O. Weissenberg, P. V. Pitukhin, T. H. Burnett, G. Nowak, V.V. Lyukov, H. Kautzky, S. Krzywdzinski, J. Babecki, R. Holynski, A. Belkov, N. Kwak, V. V. Ammosov, H. Tchernev, V.M. Sidorov, L. Voyvodic, V. A. Gapienko, O.M. Kuznetsov, R. Rosenbladt, Barbara Wosiek, R. Ammar, R. Davis, W. Wolter, D. Coppage, P.A. Goritchev, V. Klyukhin, and K. Bogomolov

Subjects
Physics, Nuclear physics, Particle physics, Pion, Meson, Hadron, Bubble chamber, Elementary particle, Fermilab, Neutrino, Charged current
Abstract

Any event representing the production and decay of the charmed F+ meson has been identified by means of a 3‐constraint fit to the decay hypothesis F+→π+π+π−π0, in which both γ‐rays from the π0 converted. The event was produced by a charged current νμ interaction in an emulsion stack located inside the Fermilab 15‐foot bubble chamber. The F+ traveled 50 μm, corresponding to a proper time of 1.4×10−13 seconds, before decaying in flight. Its mass was determined to be 2017±25 MeV.

Published
1981

44. Multiplicities and angular distributions of nucleus-nucleus interactions at SPS energies: Protons to lead

Author

W. V. Jones, C. J. Waddington, Andrzej Olszewski, M. Szarska, Adam Trzupek, J. Dugas, A. Dabrowska, D. Kudzia, Henryk Wilczyński, W. Wolter, R. Holynski, P. Deines-Jones, Krzysztof Wozniak, Barbara Wosiek, B. Wilczynska, J. P. Wefel, B. S. Nilsen, and Michael Cherry

Subjects
Physics, Proton, biology, Monte Carlo method, Multiplicity (mathematics), Venus, biology.organism_classification, Charged particle, Ion, Nuclear physics, Pseudorapidity, Nuclear emulsion, Atomic physics, Nuclear Experiment
Abstract

Charged particle multiplicities from high multiplicity interactions of 158 GeV/n Pb ions on Pb targets were measured in nuclear emulsion chambers. These measurements are compared to measurements of central interactions of 200 GeV/n p, O, and S beams on silver or bromine and to simulations from the FRITIOF 7.02 and Venus 4.12 Monte Carlo event generators. Multiplicities in the central region are significantly lower than either simulation predicts. Venus, the only one of the two which attempts to incorporate reinteraction phenomena, predicts a significant narrowing of the pseudorapidity distribution for the highest multiplicity events, which is not observed in the data. However, we do find evidence for unexpectedly high spectator proton transverse momenta.

45. NEUTRINO PRODUCTION OF CHARMED PARTICLES IN A HYBRID EXPERIMENT E-564

Author

V. I. Baranov, E. D. Kolganova, W. Wolter, V. V. Shamanov, B. Wilczynska, L. Voyvodic, R. Riemer, W. M. Smart, H. Tchernev, R. Davis, I. V. Makhlyueva, V. I. Koreshev, P. V. Pitukhin, Barbara Wosiek, A. Jurak, S.A. Bunyatov, V.V. Lyukov, P. Goritchev, R. J. Wilkes, Henryk Wilczyński, A. Bakich, Andrzej Olszewski, Yu.A. Batusov, R. Rosenbladt, O. K. Egorov, V. Klukhin, V. V. Ammosov, L.S. Peak, E. A. Pozharova, S. Krzywdzinski, R. Ammar, T. H. Burnett, D. Coppage, V. Smirnitsky, M. Ivanova, J. J. Lord, V.I. Sirotenko, N. Kwak, V. I. Tretyak, V. A. Gapienko, O.M. Kuznetsov, H. A. Rubin, R. Stump, and J. Grees

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Physics::Instrumentation and Detectors, Branching fraction, Nuclear Theory, High Energy Physics::Phenomenology, Baryon, Charmed baryons, Nuclear physics, Particle decay, Bubble chamber, High Energy Physics::Experiment, Nuclear emulsion, Neutrino, Nuclear Experiment, Engineering (miscellaneous)
Abstract

Cryogenically sensitive nuclear emulsion was placed inside the 15-foot bubble chamber of FNAL and exposed to a wide-band energy (up to 200 GeV) neutrino beam. 194 charged-current neutrino interactions and 13 decays of charmed particles were registered. Using the nuclear emulsion as a vertex detector with the good spectrometric properties of the 15-foot bubble chamber has allowed the decays of charmed particles to be effectively analysed. Attentions is focussed on the new physical results. Λ + baryon andD + meson decay channels, production of charmed ∑ c baryons and Λ + via ∑ c . For the first time an event interpreted as production of the excited (c $$\overline s$$ )-state with mass ∼2790 MeV/c2 has been registered.

46. Operations of the Pierre Auger Observatory

Author

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

Subjects
Pierre Auger Observatory, Upgrade, Observatory, Astronomy, Detector, Experimental High Energy Physics, Basic level, Cosmic ray, High Energy Physics, Geology, Remote sensing
Abstract

The construction of the first stage of the Pierre Auger Observatory, designed for research of ultra-high energy cosmic rays, began in 2001 with a prototype system. The Observatory has been collecting data since early 2004 and was completed in 2008. The Observatory is situated at 1400 m above sea level near Malargue, (Mendoza province) in western Argentina, covering a vast plain of 3000 squared km, known as the Pampa Amarillo. The Observatory consists of a hybrid detector, in which there are 1660 water-Cherenkov stations, forming the Surface Detector (SD) and 27 peripheral atmospheric fluorescence telescopes, comprising the Fluorescence Detector (FD).Over time, the Auger Observatory has been enhanced with different R&D prototypes and is recently being to an important upgrade called AugerPrime. In the present contribution, the general operations of the SD and FD will be described. In particular the FD shift procedure - executable locally in Malargue or remotely by teams in control rooms abroad within the Collaboration - and the newly SD shifts (operating since 2019) will be explained. Additionally, the SD and FD maintenance campaigns, as well as the data taking and data handling at a basic level, will be reported

48. Transverse momenta of helium fragments in gold fragmentation at 10.6 GeV/nucleon

Author

R. Holynski, Krzysztof Woźniak, W. Wolter, B. Wilczynska, Andrzej Olszewski, J. P. Wefel, A. J. Dubinina, Adam Trzupek, Barbara Wosiek, M. Szarska, Henryk Wilczyński, C. J. Waddington, V. A. Smirnitski, A. Dabrowska, W. V. Jones, Michael Cherry, K. Sengupta, and P. Deines-Jones

Subjects
Physics, Physics and Astronomy (miscellaneous), Projectile, Nuclear Theory, chemistry.chemical_element, Breakup, Exponential function, Nuclear physics, Transverse plane, Fragmentation (mass spectrometry), chemistry, Nuclear emulsion, Atomic physics, Nuclear Experiment, Nucleon, Helium
Abstract

The transverse momentum (pt) distributions of helium fragments from gold fragmentation on different nuclei of nuclear emulsion have been measured and a clear increase of average pt with target mass is seen. The pt distributions can be parameterized by a sum of three exponential functions of the form \(\sim {\rm exp}(-p_{t}^{2}/B_{i})\). The differences in pt distributions in interactions on different targets can be explained by different contributions of the three exponential functions. These contributions depend on the projectile breakup in the collision, and for a given degree of the projectile breakup do not depend on the target mass.

50. SPECTRA, COMPOSITION, AND INTERACTIONS OF NUCLEI WITH MAGNET INTERACTION CHAMBERS

Author

J. Iwai, R. J. Wilkes, T. Hayashi, M. Fuki, T. H. Burnett, T. Yuda, F. E. Roberts, T. Ogata, J. H. Derrickson, John W. Watts, T. Tabuki, W. F. Fountain, Henryk Wilczyński, S. C. Strausz, T. Tominaga, R. Holynski, H. Yokomi, T. Taira, J. J. Lord, Y. Takahashi, A. Yamamoto, Thomas A. Parnell, W. Wolter, A. Jurak, Shoji Dake, B. Wilczynska, M. C. Cherry, H. Oda, J. P. Wefel, K. Niwa, Osamu Miyamura, T. Shibata, J. C. Gregory, and T. Wosiek

Subjects
Physics, Nuclear physics, Meson, Physics::Instrumentation and Detectors, Hadron, State of matter, Elementary particle, Cosmic ray, Nuclear Experiment, Charged particle, Particle detector, Calorimeter
Abstract

Emulsion chambers will be flown in the Astromag Facility to measure the cosmic ray composition and spectra to 10 exp 15 eV total energy and to definitively study the characteristics of nucleus-nucleus interactions above 10 exp 12 eV/n. Two configurations of emulsion chambers will be flown in the SCIN/MAGIC experiment. One chamber has an emulsion target and a calorimeter similar to those recently flown on balloons for composition and spectra measurements. The other has an identical calorimeter and a low-density target section optimized for performing rigidity measurements on charged particles produced in interactions. The transverse momenta of charged and neutral mesons, direct hadronic pairs from resonance decays and interference effects, and possible charge clustering in high-density states of matter will be studied.

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