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1. Neutrinos below 100 TeV from the southern sky employing refined veto techniques to IceCube data

Author

A. O'Murchadha, D. J. Koskinen, Timothyblake Watson, Timo Karg, A. Kyriacou, E. Bourbeau, R. Maunu, C. Pérez de los Heros, T. Menne, Matthias Vraeghe, Maria Tselengidou, E. O’Sullivan, B. Relethford, J. Auffenberg, Raffaela Busse, D. Soldin, K. Rawlins, Claudio Kopper, J. Becker Tjus, Konstancja Satalecka, Subir Sarkar, Z. Griffith, Theo Glauch, R. Hellauer, K. Mallot, B. J. P. Jones, U. Katz, Minjin Jeong, James W. Wood, James Madsen, Thomas Meures, K. Hoshina, M. E. Huber, P. B. Price, Benjamin Hokanson-Fasig, N. L. Strotjohann, Segev BenZvi, Felix Henningsen, Glenn Spiczak, G. Momenté, M. Rameez, Lu Lu, Marcos Santander, R. Ström, Won Nam Kang, A. R. Fazely, H. Bagherpour, E. Pinat, P. Backes, X. Bai, D. van Eijk, Simona Toscano, D. F. Cowen, U. Naumann, K. D. de Vries, Spencer Klein, Andres Medina, Olga Botner, S. Tilav, E. Unger, L. Gerhardt, G. Neer, T. Kintscher, Francesco Lucarelli, Frederik Hermann Lauber, S. Hickford, A. Olivas, J. J. Beatty, Daniel Bindig, J. P. Yanez, N. Kulacz, G. H. Collin, Azadeh Keivani, T. Glüsenkamp, T. O. B. Schmidt, V. Baum, Teresa Montaruli, K. Jero, Tianlu Yuan, Sebastian Böser, C. Chen, Kara Hoffman, Kendall Mahn, K. Wiebe, J. Stettner, Hermann Kolanoski, A. Terliuk, S. Westerhoff, T. R. Wood, Justin Lanfranchi, R. Turcotte, K. Helbing, Yiqian Xu, Karl J. Clark, Matt Dunkman, Hrvoje Dujmovic, Sander Vanheule, Javier Gonzalez, L. Rauch, Anastasia Maria Barbano, Kurt Woschnagg, T. Kittler, G. W. Sullivan, Giorgio Maggi, James E. Braun, Alexander Sandrock, Thomas Ehrhardt, E. Cheung, Thomas Stuttard, H.-P. Bretz, Qinrui Liu, Martina Karl, M. Song, T. L. Carver, Mike Richman, Jochen M. Schneider, Paul Evenson, Hershal Pandya, C. De Clercq, Mirco Hunnefeld, Wolfgang Rhode, Dirk Ryckbosch, Nahee Park, K. Hultqvist, Stephan Meighen-Berger, Chunfai Tung, S. Yoshida, Elisa Bernardini, David A. Williams, Robert Stein, Lenka Tomankova, D. Hebecker, Karim Ghorbani, Spencer Axani, Simone Garrappa, Darren Grant, L. Wills, Markus Ackermann, S. W. Barwick, M. Stamatikos, D. Rysewyk, M. Silva, Kayla Leonard, M. J. Larson, M. A. Unland Elorrieta, Dmitry Chirkin, Sarah Mancina, Sarah Nowicki, Alexander Kappes, N. Kurahashi, Jenni Adams, I. Taboada, P. Peiffer, Joshua Hignight, Todor Stanev, C. Wendt, Paul Coppin, Michael O. Wolf, P. Nakarmi, Carlos Arguelles, J. P. A. M. de André, N. van Eijndhoven, C. Haack, Delia Tosi, Anna Franckowiak, Tobias Hoinka, Andrea Turcati, Jessie Micallef, A. Goldschmidt, Jung-Hyun Kim, Ibrahim Safa, Francis Halzen, P. Schlunder, G. de Wasseige, M. Wallraff, F. Huang, J. van Santen, A. Stößl, M. Börner, Steve Sclafani, Damian Pieloth, Ali Kheirandish, W. Van Driessche, J. Kiryluk, Alex Pizzuto, Daria Pankova, R. Hoffmann, E. Friedman, George Japaridze, Roger Moore, Gary Binder, Christian Spiering, D. R. Nygren, Reina H. Maruyama, I. Ansseau, K. Becker, Jan Soedingrekso, C. Walck, Marek Kowalski, Steven Robertson, Elisa Lohfink, K. Andeen, Jannes Brostean-Kaiser, Summer Blot, Thomas K. Gaisser, G. B. Yodh, J. Bourbeau, E. Jacobi, R. G. Stokstad, R. Nahnhauer, Gisela Anton, A. Stasik, Justin Vandenbroucke, Juliana Stachurska, H. Dembinski, Emily Dvorak, L. Köpke, Alexander Fritz, D. Z. Besson, Chad Finley, G. Krückl, L. Schumacher, Carsten Rott, Tim Ruhe, Colin Turley, C. Alispach, Seongjin In, Gerald Przybylski, Elisa Resconi, T. Anderson, M. G. Aartsen, Janet Conrad, Federica Bradascio, Alexander Burgman, Pablo Correa, H. Niederhausen, K. Mase, Yuya Makino, R. Cross, Xianwu Xu, Christoph Tönnis, J. Sandroos, Mehmet Gunduz, Johannes Werthebach, M. S. Sutherland, A. Ishihara, R. C. Bay, M. J. Weiss, Kirill Filimonov, Austin Schneider, J. C. Gallagher, Juan Carlos Diaz-Velez, M. Usner, S. Kopper, M. Leuermann, Gerrit Wrede, Kael Hanson, René Reimann, William Luszczak, Allan Hallgren, M. Kauer, Martin Rongen, Pranav Dave, Samridha Kunwar, D. Altmann, K. Meagher, David Kappesser, L. Wille, S. E. Sanchez Herrera, Maximilian Meier, T. Palczewski, Paolo Desiati, M. Günder, D. Heereman, T. Stezelberger, A. Steuer, B. Eberhardt, Raamis Hussain, J. Lünemann, Amirreza Raissi, Chris Weaver, Stephanie Bron, C. J. Lozano Mariscal, G. Merino, N. Wandkowsky, Surujhdeo Seunarine, R. Snihur, Juanan Aguilar, B. J. Whelan, Immacolata Carmen Rea, K. Krings, Jan Weldert, L. Halve, Philipp Eller, M. Plum, Ramesh Koirala, E. Blaufuss, J. Felde, Merlin Schaufel, L. Classen, A. Obertacke Pollmann, A. Wallace, J. L. Kelley, Da Xu, Markus Ahlers, James DeLaunay, Marjon Moulai, S. De Ridder, Christopher Wiebusch, Kunal Deoskar, M. Labare, A. Karle, Erik Ganster, Ioana Codrina Maris, Christian Bohm, Samvel Ter-Antonyan, Christoph Raab, Nadège Iovine, D. Berley, G. C. Hill, Bunheng Ty, Maryon Ahrens, Giovanni Renzi, D. Seckel, Frederik Tenholt, S. Fahey, R. Nagai, M. Medici, S. Miarecki, Tyce DeYoung, Nathan Whitehorn, Jeffrey Lazar, Physics, Faculty of Sciences and Bioengineering Sciences, Vriendenkring VUB, and Elementary Particle Physics

Subjects
background [atmosphere], Physics::Instrumentation and Detectors, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, pole, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, IceCube Neutrino Observatory, IceCube, charged current, High Energy Physics - Experiment (hep-ex), Neutrinos, Point sources, Veto techniques, SEARCH, TRACK RECONSTRUCTION, 0103 physical sciences, supernova, Muon neutrino, atmosphere [muon], 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, neutrino muon, Muon, 010308 nuclear & particles physics, ICE, Galactic Center, High Energy Physics::Phenomenology, Astronomy, Astronomy and Astrophysics, flux [neutrino], Galactic plane, observatory, Supernova, Physics and Astronomy, Sky, energy [neutrino], gamma ray, ddc:540, spectral, High Energy Physics::Experiment, galaxy, Neutrino, Astrophysics - High Energy Astrophysical Phenomena
Abstract

Many Galactic sources of gamma rays, such as supernova remnants, are expected to produce neutrinos with a typical energy cutoff well below 100 TeV. For the IceCube Neutrino Observatory located at the South Pole, the southern sky, containing the inner part of the Galactic plane and the Galactic Center, is a particularly challenging region at these energies, because of the large background of atmospheric muons. In this paper, we present recent advancements in data selection strategies for track-like muon neutrino events with energies below 100 TeV from the southern sky. The strategies utilize the outer detector regions as veto and features of the signal pattern to reduce the background of atmospheric muons to a level which, for the first time, allows IceCube searching for point-like sources of neutrinos in the southern sky at energies between 100 GeV and several TeV in the muon neutrino charged current channel. No significant clustering of neutrinos above background expectation was observed in four years of data recorded with the completed IceCube detector. Upper limits on the neutrino flux for a number of spectral hypotheses are reported for a list of astrophysical objects in the southern hemisphere., 19 pages, 17 figures, 2 tables

Published
2020
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2. Background studies for acoustic neutrino detection at the South Pole

Author

T. Denger, H. Taavola, E. Blaufuss, J. C. Davis, P. O. Hulth, J. Eisch, K. Han, G. de Vries-Uiterweerd, J. J. Beatty, B. Semburg, A. Piegsa, M. Krasberg, C. Pérez de los Heros, H. Wissing, K. Hoshina, L. Koepke, Glenn Spiczak, J. Posselt, Daniel Bindig, S. M. Movit, J. Auffenberg, U. Naumann, S. Yoshida, J. M. Clem, P. Zarzhitsk, A. Van Overloop, Ch. Weaver, Reina H. Maruyama, Jon Dumm, M. Prikockis, T. Waldenmaier, Joanna Kiryluk, K. Beattie, O. Schulz, O. Depaepe, P. B. Price, Chad Finley, T. Griesel, M. Ono, S. Stoyanov, K.-H. Becker, J. L. Bazo Alba, Peter Mészáros, M. Kowalski, J. Luenemann, K. Rawlins, T. Feusels, J. E. Jacobsen, Marcos Santander, L. Gerhardt, Larissa Paul, G. Stephens, S. Westerhoff, D. Bose, T. O. B. Schmidt, M. Danninger, K. Wiebe, T. Fischer-Wasels, James Madsen, A. Schukraft, S. Grullon, M. J. Carson, Segev BenZvi, D. Z. Besson, Spencer Klein, T. Kowarik, A. Marotta, Thomas Meures, E. Middell, Elisa Bernardini, R. C. Bay, J. M. Joseph, M. Ribordy, H. S. Matis, E. A. Strahler, Kurt Woschnagg, N. van Eijndhoven, Dirk Ryckbosch, Juan Carlos Diaz-Velez, Paul Evenson, Teresa Montaruli, P. Roth, Kara Hoffman, Y. Sestayo, M. J. Larson, Albrecht Karle, D. Tosi, J. P. Rodrigues, Anatoli Fedynitch, Stijn Buitink, T. Stezelberger, P. Niessen, A. Tamburro, D. Turcan, M. Dierckxsens, Jenni Adams, Christian Spiering, Nathan Whitehorn, S. Cohen, Fabian Kislat, Xinhua Bai, S. Boeser, Justin Vandenbroucke, I. Taboada, Francis Halzen, C. Ha, Dmitry Chirkin, Alexander Kappes, R. Morse, K. Mase, J. L. Kelley, O. Fadiran, M. Merck, G. Kroll, Markus Ahlers, K. Meagher, B. D. Fox, Wolfgang Rhode, M. L. Benabderrahmane, J. Dreyer, T. Abu-Zayyad, A. Franckowiak, S. Seunarine, Y. Abdou, Carsten Rott, J. Miller, J. P. Huelss, Ph. Herquet, A. Slipak, S. Tilav, A. Stoessl, M. Bissok, S. Hickford, A. Schoenwald, R. G. Stokstad, D. Rutledge, S. Bechet, R. Porrata, Pratik Majumdar, Gerald Przybylski, J. van Santen, R. Wischnewski, P. Redl, D. Heinen, Xianwu Xu, Martin Wolf, C. Colnard, C. Bohm, K. Laihem, M. Stamatikos, M. Olivo, T. Straszheim, Paraic A. Kenny, Juanan Aguilar, D. Bertrand, Samvel Ter-Antonyan, L. Demiroers, J. K. Becker, Takao Kuwabara, Kael Hanson, J. Petrovic, H. G. Sander, B. Christy, S. Hussain, D. J. Koskinen, M. Vehring, D. F. Cowen, Chun Xu, F. Rothmaier, Karl-Heinz Kampert, Kirill Filimonov, A. Ishihara, Matthias Geisler, K. Hultqvist, A. Schultes, P. Berghaus, Timo Karg, B. Ruzybayev, M. M. Foerster, Rasha Abbasi, M. Wallraff, J. Blumenthal, A. Goldschmidt, S. Euler, M. Voge, J. C. Gallagher, M. Gurtner, Darren Grant, S. Panknin, Damian Pieloth, D. Hubert, M. Stüer, A. M. Brown, Paolo Desiati, Allan Hallgren, J. A. Goodman, Sandro Kopper, N. Milke, Olga Botner, George Japaridze, O. Engdegård, Aongus O'Murchadha, Elisa Resconi, J. Berdermann, Henrik J. Johansson, Tim Ruhe, M. Walter, A. Rizzo, T. Gluesenkamp, Simona Toscano, D. Berley, G. C. Hill, R. W. Ellsworth, K. Schatto, G. Kohnen, Michael J. Baker, J. W. Nam, L. Gladstone, D. Seckel, S. H. Seo, Subir Sarkar, D. R. Nygren, A. R. Fazely, Tyce DeYoung, P. A. Toale, S. Odrowski, D. J. Boersma, S.J. Lafebre, A. Homeier, Christopher Wiebusch, J. Daughhetee, J. H. Koehne, F. Clevermann, J. P. Yanez, G. W. Sullivan, James E. Braun, Q. Swillens, R. J. Lauer, C. De Clercq, David A. Williams, S. W. Barwick, Todor Stanev, C. Wendt, F. Descamps, A. Tepe, R. Franke, C. Walck, Thomas K. Gaisser, G. B. Yodh, A. Gross, M. Labare, A. Silvestri, Karen Andeen, R. Nahnhauer, M. Schunck, K. Kuehn, W. Huelsnitz, K. Helbing, R. Ehrlich, A. Olivas, T. Krings, Hermann Kolanoski, H. Landsman, M. V. D'Agostino, and Elementary Particle Physics

Subjects
Signals, TELESCOPE, Absolute noise level, Astrophysics::High Energy Astrophysical Phenomena, Flux, FOS: Physical sciences, Astrophysics, 7. Clean energy, 01 natural sciences, IceCube Neutrino Observatory, law.invention, IceCube, Telescope, Acoustic neutrino detection, Neutrino flux limit, law, SIGNALS, 0103 physical sciences, WATER, Detection theory, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, Acoustic neutrino detector, 010308 nuclear & particles physics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Water, Astronomy and Astrophysics, Geodesy, Noise, Neutrino detector, Physics and Astronomy, 13. Climate action, ddc:540, Neutrino, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The detection of acoustic signals from ultra-high energy neutrino interactions is a promising method to measure the tiny flux of cosmogenic neutrinos expected on Earth. The energy threshold for this process depends strongly on the absolute noise level in the target material. The South Pole Acoustic Test Setup (SPATS), deployed in the upper part of four boreholes of the IceCube Neutrino Observatory, has monitored the noise in Antarctic ice at the geographic South Pole for more than two years down to 500 m depth. The noise is very stable and Gaussian distributed. Lacking an in-situ calibration up to now, laboratory measurements have been used to estimate the absolute noise level in the 10 to 50 kHz frequency range to be smaller than 20 mPa. Using a threshold trigger, sensors of the South Pole Acoustic Test Setup registered acoustic pulse-like events in the IceCube detector volume and its vicinity. Acoustic signals from refreezing IceCube holes and from anthropogenic sources have been used to localize acoustic events. Monte Carlo simulations of sound propagating from the established sources to the SPATS sensors have allowed to check corresponding model expectations. An upper limit on the neutrino flux at energies $E_��> 10^{11}$ GeV is derived from acoustic data taken over eight months., 17 pages, 14 figures

Published
2012
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