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141 results on '"M. Rameez"'

1. Probing atmospheric effects using GRAPES-3 plastic scintillator detectors

Author: GRAPES-3 Collaboration, M. Zuberi, S. Ahmad, M. Chakraborty, A. Chandra, S. R. Dugad, U. D. Goswami, S. K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, P. Jain, V. B. Jhansi, S. Kawakami, H. Kojima, S. Mahapatra, P. K. Mohanty, Y. Muraki, P. K. Nayak, T. Nonaka, A. Oshima, D. Pattanaik, M. Rameez, K. Ramesh, L. V. Reddy, S. Shibata, and F. Varsi
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The GRAPES-3 extensive air shower (EAS) array has been designed to study cosmic rays from 10 $$^{13}$$ 13 –10 $$^{16}$$ 16 eV. It employs 400 scintillator detectors spread across 25,000 m $$^{2}$$ 2 , mainly of cone-type and fiber-type, each covering a 1 m $$^{2}$$ 2 area. These detectors record EAS particle densities and arrival times, which are crucial for determining primary particle energy and direction. A decade (2013–2022) of EAS data is analyzed to investigate the dependence of particle densities on ambient temperature and atmospheric pressure. Notably, ambient temperature exhibits a delayed response, with a more pronounced delay in fiber-type detectors, while cone-type detectors exhibit a higher observed temperature coefficient. In contrast, atmospheric pressure instantly and uniformly affects both detector types, with Monte Carlo simulations backing the observed pressure coefficient. These findings established a reliable pressure coefficient for EAS within this distinctive energy range and contributed to the refinement of correction algorithms, ultimately improving particle density precision for more accurate shower parameter estimates.
Published: 2024
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2. In situ estimation of ice crystal properties at the South Pole using LED calibration data from the IceCube Neutrino Observatory

Author: R. Abbasi, M. Ackermann, J. Adams, N. Aggarwal, J. Aguilar, M. Ahlers, M. Ahrens, J.-M. Alameddine, A. A. Alves Junior, N. M. B. Amin, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Y. Ashida, S. Athanasiadou, S. Axani, X. Bai, A. Balagopal V, M. Baricevic, S. Barwick, V. Basu, R. Bay, J. Beatty, K. H. Becker, J. Becker Tjus, J. Beise, C. Bellenghi, S. Benda, S. BenZvi, D. Berley, E. Bernardini, D. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, F. Bontempo, J. Book, J. Borowka, C. Boscolo Meneguolo, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Braun, B. Brinson, J. Brostean-Kaiser, R. Burley, R. Busse, M. Campana, E. Carnie-Bronca, C. Chen, Z. Chen, D. Chirkin, K. Choi, B. Clark, L. Classen, A. Coleman, G. Collin, A. Connolly, J. Conrad, P. Coppin, P. Correa, S. Countryman, D. Cowen, R. Cross, C. Dappen, P. Dave, C. De Clercq, J. DeLaunay, D. Delgado López, H. Dembinski, K. Deoskar, A. Desai, P. Desiati, K. de Vries, G. de Wasseige, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, M. Dittmer, H. Dujmovic, M. DuVernois, T. Ehrhardt, P. Eller, R. Engel, H. Erpenbeck, J. Evans, P. Evenson, K. L. Fan, A. Fazely, A. Fedynitch, N. Feigl, S. Fiedlschuster, A. Fienberg, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. Gaisser, J. Gallagher, E. Ganster, A. Garcia, S. Garrappa, L. Gerhardt, A. Ghadimi, C. Glaser, T. Glüsenkamp, T. Glauch, N. Goehlke, J. Gonzalez, S. Goswami, D. Grant, S. Gray, T. Grégoire, S. Griswold, C. Günther, P. Gutjahr, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, H. Hamdaoui, M. Ha Minh, K. Hanson, J. Hardin, A. Harnisch, P. Hatch, A. Haungs, K. Helbing, J. Hellrung, F. Henningsen, L. Heuermann, S. Hickford, C. Hill, G. Hill, K. Hoffman, K. Hoshina, W. Hou, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, K. Hymon, S. In, N. Iovine, A. Ishihara, M. Jansson, G. Japaridze, M. Jeong, M. Jin, B. Jones, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, L. Kardum, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J. Kelley, A. Kheirandish, K. Kin, J. Kiryluk, S. Klein, A. Kochocki, R. Koirala, H. Kolanoski, T. Kontrimas, L. Köpke, C. Kopper, J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, T. Kozynets, E. Krupczak, E. Kun, N. Kurahashi, N. Lad, C. Lagunas Gualda, M. Larson, F. Lauber, J. Lazar, J. Lee, K. Leonard, A. Leszczyńska, M. Lincetto, Q. Liu, M. Liubarska, E. Lohfink, C. Love, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. Mahn, Y. Makino, S. Mancina, W. Marie Sainte, I. Mariş, S. Marka, Z. Marka, M. Marsee, I. Martinez-Soler, R. Maruyama, T. McElroy, F. McNally, J. V. Mead, K. Meagher, S. Mechbal, A. Medina, M. Meier, S. Meighen-Berger, Y. Merckx, J. Micallef, D. Mockler, T. Montaruli, R. Moore, B. Morse, M. Moulai, T. Mukherjee, R. Naab, R. Nagai, U. Naumann, A. Nayerhoda, J. Necker, M. Neumann, H. Niederhausen, M. Nisa, S. Nowicki, A. Obertacke Pollmann, M. Oehler, B. Oeyen, A. Olivas, R. Orsoe, J. Osborn, E. O'Sullivan, H. Pandya, D. Pankova, N. Park, G. Parker, E. N. Paudel, L. Paul, C. Pérez de los Heros, L. Peters, J. Peterson, S. Philippen, S. Pieper, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, B. Pries, R. Procter-Murphy, G. Przybylski, C. Raab, J. Rack-Helleis, M. Rameez, K. Rawlins, Z. Rechav, A. Rehman, P. Reichherzer, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, E. Roberts, S. Robertson, S. Rodan, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, L. Ruohan, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, J. Saffer, D. Salazar-Gallegos, P. Sampathkumar, S. Sanchez Herrera, A. Sandrock, M. Santander, S. Sarkar, M. Schaufel, H. Schieler, S. Schindler, B. Schlüter, T. Schmidt, J. Schneider, F. Schröder, L. Schumacher, G. Schwefer, S. Sclafani, D. Seckel, S. Seunarine, A. Sharma, S. Shefali, N. Shimizu, M. Silva, B. Skrzypek, B. Smithers, R. Snihur, J. Soedingrekso, A. Søgaard, D. Soldin, C. Spannfellner, G. Spiczak, C. Spiering, M. Stamatikos, T. Stanev, R. Stein, T. Stezelberger, T. Stürwald, T. Stuttard, G. Sullivan, I. Taboada, S. Ter-Antonyan, W. Thompson, J. Thwaites, S. Tilav, K. Tollefson, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, C. F. Tung, R. Turcotte, J. P. Twagirayezu, B. Ty, M. Unland Elorrieta, K. Upshaw, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, J. Vara, J. Veitch-Michaelis, S. Verpoest, D. Veske, C. Walck, W. Wang, T. B. Watson, C. Weaver, P. Weigel, A. Weindl, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, N. Whitehorn, C. Wiebusch, N. Willey, D. Williams, M. Wolf, G. Wrede, J. Wulff, X. Xu, J. P. Yanez, E. Yildizci, S. Yoshida, S. Yu, T. Yuan, Z. Zhang, and P. Zhelnin
Subjects: Environmental sciences, GE1-350, Geology, QE1-996.5
Abstract: The IceCube Neutrino Observatory instruments about 1 km3 of deep, glacial ice at the geographic South Pole. It uses 5160 photomultipliers to detect Cherenkov light emitted by charged relativistic particles. An unexpected light propagation effect observed by the experiment is an anisotropic attenuation, which is aligned with the local flow direction of the ice. We examine birefringent light propagation through the polycrystalline ice microstructure as a possible explanation for this effect. The predictions of a first-principles model developed for this purpose, in particular curved light trajectories resulting from asymmetric diffusion, provide a qualitatively good match to the main features of the data. This in turn allows us to deduce ice crystal properties. Since the wavelength of the detected light is short compared to the crystal size, these crystal properties include not only the crystal orientation fabric, but also the average crystal size and shape, as a function of depth. By adding small empirical corrections to this first-principles model, a quantitatively accurate description of the optical properties of the IceCube glacial ice is obtained. In this paper, we present the experimental signature of ice optical anisotropy observed in IceCube light-emitting diode (LED) calibration data, the theory and parameterization of the birefringence effect, the fitting procedures of these parameterizations to experimental data, and the inferred crystal properties.
Published: 2024
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3. Detection of astrophysical tau neutrino candidates in IceCube

Author: IceCube Collaboration, R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, A. A. Alves, N. M. Amin, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, S. Axani, X. Bai, A. V. Balagopal, A. Barbano, S. W. Barwick, B. Bastian, V. Basu, V. Baum, S. Baur, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, C. Bellenghi, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, S. Bron, J. Brostean-Kaiser, A. Burgman, R. S. Busse, M. A. Campana, C. Chen, D. Chirkin, S. Choi, B. A. Clark, K. Clark, L. Classen, A. Coleman, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, S. Dharani, A. Diaz, J. C. Díaz-Vélez, H. Dujmovic, M. Dunkman, M. A. DuVernois, E. Dvorak, T. Ehrhardt, P. Eller, R. Engel, J. Evans, P. A. Evenson, S. Fahey, A. R. Fazely, S. Fiedlschuster, A. T. Fienberg, K. Filimonov, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, A. Ghadimi, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, S. Goswami, D. Grant, T. Grégoire, Z. Griffith, S. Griswold, M. Gündüz, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, M. Ha Minh, K. Hanson, J. Hardin, A. Haungs, S. Hauser, D. Hebecker, K. Helbing, F. Henningsen, S. Hickford, J. Hignight, C. Hill, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, B. J. P. Jones, R. Joppe, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, M. Kellermann, J. L. Kelley, A. Kheirandish, J. Kim, K. Kin, T. Kintscher, J. Kiryluk, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, K. Krings, G. Krückl, N. Kulacz, N. Kurahashi, A. Kyriacou, C. Lagunas Gualda, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, K. Leonard, A. Leszczyńska, Y. Li, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, P. Mallik, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, F. McNally, K. Meagher, A. Medina, M. Meier, S. Meighen-Berger, J. Merz, J. Micallef, D. Mockler, G. Momenté, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, R. Naab, R. Nagai, U. Naumann, J. Necker, G. Neer, L. V. Nguyễn, H. Niederhausen, M. U. Nisa, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, M. Oehler, A. Olivas, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, P. Peiffer, C. Pérez de los Heros, S. Philippen, D. Pieloth, S. Pieper, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, P. B. Price, G. T. Przybylski, C. Raab, A. Raissi, M. Rameez, K. Rawlins, I. C. Rea, A. Rehman, R. Reimann, M. Renschler, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, S. Robertson, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Scharf, M. Schaufel, H. Schieler, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, F. G. Schröder, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, S. Shefali, M. Silva, B. Smithers, R. Snihur, J. Soedingrekso, D. Soldin, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, I. Taboada, F. Tenholt, S. Ter-Antonyan, S. Tilav, F. Tischbein, K. Tollefson, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, J. P. Twagirayezu, B. Ty, E. Unger, M. A. Unland Elorrieta, M. Usner, J. Vandenbroucke, D. van Eijk, N. van Eijndhoven, D. Vannerom, J. van Santen, S. Verpoest, M. Vraeghe, C. Walck, A. Wallace, N. Wandkowsky, T. B. Watson, C. Weaver, A. Weindl, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, D. R. Williams, M. Wolf, T. R. Wood, K. Woschnagg, G. Wrede, J. Wulff, X. W. Xu, Y. Xu, J. P. Yanez, S. Yoshida, T. Yuan, and Z. Zhang
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract High-energy tau neutrinos are rarely produced in atmospheric cosmic-ray showers or at cosmic particle accelerators, but are expected to emerge during neutrino propagation over cosmic distances due to flavor mixing. When high energy tau neutrinos interact inside the IceCube detector, two spatially separated energy depositions may be resolved, the first from the charged current interaction and the second from the tau lepton decay. We report a novel analysis of 7.5 years of IceCube data that identifies two candidate tau neutrinos among the 60 “High-Energy Starting Events” (HESE) collected during that period. The HESE sample offers high purity, all-sky sensitivity, and distinct observational signatures for each neutrino flavor, enabling a new measurement of the flavor composition. The measured astrophysical neutrino flavor composition is consistent with expectations, and an astrophysical tau neutrino flux is indicated at 2.8 $$\sigma $$ σ significance.
Published: 2022
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4. Low energy event reconstruction in IceCube DeepCore

Author: R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, J. M. Alameddine, A. A. Alves, N. M. Amin, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Y. Ashida, S. Axani, X. Bai, A. Balagopal V., S. W. Barwick, B. Bastian, V. Basu, S. Baur, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, J. Beise, C. Bellenghi, S. Benda, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, M. Boddenberg, F. Bontempo, J. Y. Book, J. Borowka, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, F. Bradascio, J. Braun, B. Brinson, S. Bron, J. Brostean-Kaiser, R. T. Burley, R. S. Busse, M. A. Campana, E. G. Carnie-Bronca, C. Chen, Z. Chen, D. Chirkin, K. Choi, B. A. Clark, K. Clark, L. Classen, A. Coleman, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, C. Dappen, P. Dave, C. De Clercq, J. J. DeLaunay, D. Delgado López, H. Dembinski, K. Deoskar, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. De Young, A. Diaz, J. C. Díaz-Vélez, M. Dittmer, H. Dujmovic, M. Dunkman, M. A. DuVernois, T. Ehrhardt, P. Eller, R. Engel, H. Erpenbeck, J. Evans, P. A. Evenson, K. L. Fan, A. R. Fazely, A. Fedynitch, N. Feigl, S. Fiedlschuster, A. T. Fienberg, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, A. Garcia, S. Garrappa, L. Gerhardt, A. Ghadimi, C. Glaser, T. Glauch, T. Glüsenkamp, N. Goehlke, J. G. Gonzalez, S. Goswami, D. Grant, T. Grégoire, S. Griswold, C. Günther, P. Gutjahr, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, M. Ha Minh, K. Hanson, J. Hardin, A. A. Harnisch, A. Haungs, D. Hebecker, K. Helbing, F. Henningsen, E. C. Hettinger, S. Hickford, J. Hignight, C. Hill, G. C. Hill, K. D. Hoffman, R. Hoffmann, K. Hoshina, W. Hou, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, K. Hymon, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, M. Jin, B. J. P. Jones, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, L. Kardum, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, M. Kellermann, J. L. Kelley, A. Kheirandish, K. Kin, T. Kintscher, J. Kiryluk, S. R. Klein, A. Kochocki, R. Koirala, H. Kolanoski, T. Kontrimas, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, T. Kozynets, E. Krupczak, E. Kun, N. Kurahashi, N. Lad, C. Lagunas Gualda, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, J. W. Lee, K. Leonard, A. Leszczynska, Y. Li, M. Lincetto, Q. R. Liu, M. Liubarska, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, S. Mancina, I. C. Maris, I. Martinez-Soler, R. Maruyama, S. McCarthy, T. McElroy, F. McNally, J. V. Mead, K. Meagher, S. Mechbal, A. Medina, M. Meier, S. Meighen-Berger, J. Micallef, D. Mockler, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, T. Mukherjee, R. Naab, R. Nagai, U. Naumann, J. Necker, L. V. Nguyễn, H. Niederhausen, M. U. Nisa, S. C. Nowicki, A. Obertacke Pollmann, M. Oehler, B. Oeyen, A. Olivas, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, L. Paul, C. Pérez de los Heros, L. Peters, J. Peterson, S. Philippen, S. Pieper, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, B. Pries, G. T. Przybylski, C. Raab, J. Rack-Helleis, A. Raissi, M. Rameez, K. Rawlins, I. C. Rea, Z. Rechav, A. Rehman, P. Reichherzer, R. Reimann, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, E. J. Roberts, S. Robertson, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, J. Saffer, P. Sampathkumar, S. E. Sanchez Herrera, A. Sandrock, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, H. Schieler, S. Schindler, T. Schmidt, A. Schneider, J. Schneider, F. G. Schröder, L. Schumacher, G. Schwefer, S. Sclafani, D. Seckel, S. Seunarine, A. Sharma, S. Shefali, N. Shimizu, M. Silva, B. Skrzypek, B. Smithers, R. Snihur, J. Soedingrekso, D. Soldin, C. Spannfellner, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, J. Stettner, T. Stezelberger, T. Stürwald, T. Stuttard, G. W. Sullivan, I. Taboada, S. Ter-Antonyan, J. Thwaites, S. Tilav, F. Tischbein, K. Tollefson, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, J. P. Twagirayezu, B. Ty, M. A. Unland Elorrieta, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, J. Veitch-Michaelis, S. Verpoest, C. Walck, W. Wang, T. B. Watson, C. Weaver, P. Weigel, A. Weindl, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, N. Whitehorn, C. H. Wiebusch, N. Willey, D. R. Williams, M. Wolf, G. Wrede, J. Wulff, X. W. Xu, J. P. Yanez, E. Yildizci, S. Yoshida, S. Yu, T. Yuan, Z. Zhang, P. Zhelnin, and IceCube Collaboration
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The reconstruction of event-level information, such as the direction or energy of a neutrino interacting in IceCube DeepCore, is a crucial ingredient to many physics analyses. Algorithms to extract this high level information from the detector’s raw data have been successfully developed and used for high energy events. In this work, we address unique challenges associated with the reconstruction of lower energy events in the range of a few to hundreds of GeV and present two separate, state-of-the-art algorithms. One algorithm focuses on the fast directional reconstruction of events based on unscattered light. The second algorithm is a likelihood-based multipurpose reconstruction offering superior resolutions, at the expense of larger computational cost.
Published: 2022
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5. Small-scale Cosmic-Ray Anisotropy Observed by the GRAPES-3 Experiment at TeV Energies

Author: M. Chakraborty, S. Ahmad, A. Chandra, S. R. Dugad, U. D. Goswami, S. K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, P. Jain, S. Kawakami, T. Koi, H. Kojima, S. Mahapatra, P. K. Mohanty, R. Moharana, Y. Muraki, T. Nakamura, P. K. Nayak, T. Nonaka, A. Oshima, B. P. Pant, D. Pattanaik, S. Paul, G. S. Pradhan, M. Rameez, K. Ramesh, S. Saha, R. Sahoo, R. Scaria, S. Shibata, T. Tabata, H. Takamaru, K. Tanaka, F. Varsi, K. Yamazaki, and M. Zuberi
Subjects: Galactic cosmic rays, Astrophysics, QB460-466
Abstract: GRAPES-3 is a mid-altitude (2200 m) and near-equatorial (11.°4N) air shower array, overlapping in its field of view for cosmic-ray observations with experiments that are located in the Northern and Southern Hemispheres. We analyze a sample of 3.7 × 10 ^9 cosmic-ray events collected by the GRAPES-3 experiment between 2013 January 1 and 2016 December 31 with a median energy of ∼16 TeV for study of small-scale (
Published: 2024
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6. Searches for Neutrinos from Large High Altitude Air Shower Observatory Ultra-high-energy γ-Ray Sources Using the IceCube Neutrino Observatory

Author: R. Abbasi, M. Ackermann, J. Adams, N. Aggarwal, J. A. Aguilar, M. Ahlers, J. M. Alameddine, A. A. Alves Jr., N. M. Amin, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Y. Ashida, S. Athanasiadou, S. N. Axani, X. Bai, A. Balagopal V., M. Baricevic, S. W. Barwick, V. Basu, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, J. Beise, C. Bellenghi, S. Benda, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, F. Bontempo, J. Y. Book, J. Borowka, C. Boscolo Meneguolo, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Braun, B. Brinson, J. Brostean-Kaiser, R. T. Burley, R. S. Busse, M. A. Campana, E. G. Carnie-Bronca, Y. L. Chang, C. Chen, Z. Chen, D. Chirkin, K. Choi, B. A. Clark, L. Classen, A. Coleman, G. H. Collin, A. Connolly, J. M. Conrad, P. Coppin, P. Correa, S. Countryman, D. F. Cowen, C. Dappen, P. Dave, C. De Clercq, J. J. DeLaunay, D. Delgado López, H. Dembinski, K. Deoskar, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, M. Dittmer, H. Dujmovic, M. A. DuVernois, T. Ehrhardt, P. Eller, R. Engel, H. Erpenbeck, J. Evans, P. A. Evenson, K. L. Fan, A. R. Fazely, A. Fedynitch, N. Feigl, S. Fiedlschuster, A. T. Fienberg, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, A. Garcia, S. Garrappa, L. Gerhardt, A. Ghadimi, C. Glaser, T. Glauch, T. Glüsenkamp, N. Goehlke, J. G. Gonzalez, S. Goswami, D. Grant, S. J. Gray, T. Grégoire, S. Griswold, C. Günther, P. Gutjahr, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, H. Hamdaoui, M. Ha Minh, K. Hanson, J. Hardin, A. A. Harnisch, P. Hatch, A. Haungs, K. Helbing, J. Hellrung, F. Henningsen, L. Heuermann, S. Hickford, A. Hidvegi, C. Hill, G. C. Hill, K. D. Hoffman, K. Hoshina, W. Hou, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, K. Hymon, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, M. Jin, B. J. P. Jones, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, L. Kardum, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J. L. Kelley, A. Kheirandish, K. Kin, J. Kiryluk, S. R. Klein, A. Kochocki, R. Koirala, H. Kolanoski, T. Kontrimas, L. Köpke, C. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, T. Kozynets, K. Kruiswijk, E. Krupczak, E. Kun, N. Kurahashi, N. Lad, C. Lagunas Gualda, M. Lamoureux, M. J. Larson, F. Lauber, J. P. Lazar, J. W. Lee, K. Leonard DeHolton, A. Leszczyńska, M. Lincetto, Q. R. Liu, M. Liubarska, E. Lohfink, C. Love, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, S. Mancina, W. Marie Sainte, I. C. Mariş, S. Marka, Z. Marka, M. Marsee, I. Martinez-Soler, R. Maruyama, F. Mayhew, T. McElroy, F. McNally, J. V. Mead, K. Meagher, S. Mechbal, A. Medina, M. Meier, S. Meighen-Berger, Y. Merckx, J. Micallef, D. Mockler, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, T. Mukherjee, R. Naab, R. Nagai, U. Naumann, A. Nayerhoda, J. Necker, M. Neumann, H. Niederhausen, M. U. Nisa, A. Noell, S. C. Nowicki, A. Obertacke Pollmann, M. Oehler, B. Oeyen, A. Olivas, R. Orsoe, J. Osborn, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, L. Paul, C. Pérez de los Heros, J. Peterson, S. Philippen, S. Pieper, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, B. Pries, R. Procter-Murphy, G. T. Przybylski, C. Raab, J. Rack-Helleis, M. Rameez, K. Rawlins, Z. Rechav, A. Rehman, P. Reichherzer, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, E. J. Roberts, S. Robertson, S. Rodan, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, L. Ruohan, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, J. Saffer, D. Salazar-Gallegos, P. Sampathkumar, S. E. Sanchez Herrera, A. Sandrock, M. Santander, S. Sarkar, J. Savelberg, M. Schaufel, H. Schieler, S. Schindler, B. Schlueter, T. Schmidt, J. Schneider, F. G. Schröder, L. Schumacher, G. Schwefer, S. Sclafani, D. Seckel, S. Seunarine, A. Sharma, S. Shefali, N. Shimizu, M. Silva, B. Skrzypek, B. Smithers, R. Snihur, J. Soedingrekso, A. Søgaard, D. Soldin, C. Spannfellner, G. M. Spiczak, C. Spiering, M. Stamatikos, T. Stanev, R. Stein, T. Stezelberger, T. Stürwald, T. Stuttard, G. W. Sullivan, I. Taboada, S. Ter-Antonyan, W. G. Thompson, J. Thwaites, S. Tilav, K. Tollefson, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, C. F. Tung, R. Turcotte, J. P. Twagirayezu, B. Ty, M. A. Unland Elorrieta, K. Upshaw, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, J. Vara, J. Veitch-Michaelis, S. Verpoest, D. Veske, C. Walck, W. Wang, T. B. Watson, C. Weaver, P. Weigel, A. Weindl, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, N. Whitehorn, C. H. Wiebusch, N. Willey, D. R. Williams, M. Wolf, G. Wrede, J. Wulff, D. L. Xu, X. W. Xu, J. P. Yanez, M. Yasutsugu, E. Yildizci, S. Yoshida, S. Yu, T. Yuan, Z. Zhang, P. Zhelnin, and IceCube Collaboration
Subjects: Neutrino astronomy, High energy astrophysics, Galactic cosmic rays, Astrophysics, QB460-466
Abstract: Galactic PeV cosmic-ray accelerators (PeVatrons) are Galactic sources theorized to accelerate cosmic rays up to PeV in energy. The accelerated cosmic rays are expected to interact hadronically with nearby ambient gas or the interstellar medium, resulting in γ -rays and neutrinos. Recently, the Large High Altitude Air Shower Observatory (LHAASO) identified 12 γ -ray sources with emissions above 100 TeV, making them candidates for PeVatrons. While at these high energies the Klein–Nishina effect exponentially suppresses leptonic emission from Galactic sources, evidence for neutrino emission would unequivocally confirm hadronic acceleration. Here, we present the results of a search for neutrinos from these γ -ray sources and stacking searches testing for excess neutrino emission from all 12 sources as well as their subcatalogs of supernova remnants and pulsar wind nebulae with 11 yr of track events from the IceCube Neutrino Observatory. No significant emissions were found. Based on the resulting limits, we place constraints on the fraction of γ -ray flux originating from the hadronic processes in the Crab Nebula and LHAASO J2226+6057.
Published: 2023
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7. Velocity independent constraints on spin-dependent DM-nucleon interactions from IceCube and PICO

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A. Balagopal V., A. Barbano, S. W. Barwick, B. Bastian, V. Baum, S. Baur, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, S. Bron, J. Brostean-Kaiser, A. Burgman, J. Buscher, R. S. Busse, T. Carver, C. Chen, E. Cheung, D. Chirkin, S. Choi, L. Classen, A. Coleman, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, H. Dujmovic, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, P. Eller, R. Engel, P. A. Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, A. Franckowiak, E. Friedman, A. Fritz, T. K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, K. Ghorbani, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, S. Griswold, M. Günder, M. Gündüz, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, A. Haungs, D. Hebecker, D. Heereman, P. Heix, K. Helbing, R. Hellauer, F. Henningsen, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, F. Jonske, R. Joppe, D. Kang, W. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J. L. Kelley, A. Kheirandish, J. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, G. Krückl, N. Kulacz, N. Kurahashi, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, K. Leonard, A. Leszczynska, M. Leuermann, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, J. Lünemann, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, G. Maggi, K. B. M. Mahn, Y. Makino, P. Mallik, K. Mallot, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, A. Medina, M. Meier, S. Meighen-Berger, T. Menne, G. Merino, T. Meures, J. Micallef, G. Momenté, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, P. Muth, R. Nagai, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, M. Oehler, A. Olivas, A. O’Murchadha, E. O’Sullivan, T. Palczewski, H. Pandya, D. V. Pankova, N. Park, P. Peiffer, C. Pérez de los Heros, S. Philippen, D. Pieloth, E. Pinat, A. Pizzuto, M. Plum, A. Porcelli, P. B. Price, G. T. Przybylski, C. Raab, A. Raissi, M. Rameez, L. Rauch, K. Rawlins, I. C. Rea, R. Reimann, B. Relethford, M. Renschler, G. Renzi, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, H. Schieler, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, F. G. Schröder, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, S. Shefali, M. Silva, R. Snihur, J. Soedingrekso, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, P. Steinmüller, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stössl, N. L. Strotjohann, T. Stürwald, T. Stuttard, G. W. Sullivan, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, B. Ty, E. Unger, M. A. Unland Elorrieta, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, T. B. Watson, C. Weaver, A. Weindl, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood, K. Woschnagg, G. Wrede, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, T. Yuan, M. Zöcklein, IceCube Collaboration, C. Amole, M. Ardid, I. J. Arnquist, D. M. Asner, D. Baxter, E. Behnke, M. Bressler, B. Broerman, G. Cao, C. J. Chen, U. Chowdhury, K. Clark, J. I. Collar, P. S. Cooper, M. Crisler, G. Crowder, N. A. Cruz-Venegas, C. E. Dahl, M. Das, S. Fallows, J. Farine, I. Felis, R. Filgas, F. Girard, G. Giroux, J. Hall, C. Hardy, O. Harris, E. W. Hoppe, M. Jin, L. Klopfenstein, C. B. Krauss, M. Laurin, I. Lawson, A. Leblanc, I. Levine, W. H. Lippincott, F. Mamedov, D. Maurya, P. Mitra, C. Moore, T. Nania, R. Neilson, A. J. Noble, P. Oedekerk, A. Ortega, M.-C. Piro, A. Plante, R. Podviyanuk, S. Priya, A. E. Robinson, S. Sahoo, O. Scallon, S. Seth, A. Sonnenschein, N. Starinski, I. Štekl, T. Sullivan, F. Tardif, E. Vázquez-Jáuregui, N. Walkowski, U. Wichoski, Y. Yan, V. Zacek, J. Zhang, and PICO Collaboration
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Adopting the Standard Halo Model (SHM) of an isotropic Maxwellian velocity distribution for dark matter (DM) particles in the Galaxy, the most stringent current constraints on their spin-dependent scattering cross-section with nucleons come from the IceCube neutrino observatory and the PICO-60 $$\hbox {C}_3\hbox {F}_8$$ C 3 F 8 superheated bubble chamber experiments. The former is sensitive to high energy neutrinos from the self-annihilation of DM particles captured in the Sun, while the latter looks for nuclear recoil events from DM scattering off nucleons. Although slower DM particles are more likely to be captured by the Sun, the faster ones are more likely to be detected by PICO. Recent N-body simulations suggest significant deviations from the SHM for the smooth halo component of the DM, while observations hint at a dominant fraction of the local DM being in substructures. We use the method of Ferrer et al. (JCAP 1509: 052, 2015) to exploit the complementarity between the two approaches and derive conservative constraints on DM-nucleon scattering. Our results constrain $$\sigma _{\mathrm{SD}} \lesssim 3 \times 10^{-39} \mathrm {cm}^2$$ σ SD ≲ 3 × 10 - 39 cm 2 ( $$6 \times 10^{-38} \mathrm {cm}^2$$ 6 × 10 - 38 cm 2 ) at $$\gtrsim 90\%$$ ≳ 90 % C.L. for a DM particle of mass 1 TeV annihilating into $$\tau ^+ \tau ^-$$ τ + τ - ( $$b\bar{b}$$ b b ¯ ) with a local density of $$\rho _{\mathrm{DM}} = 0.3~\mathrm {GeV/cm}^3$$ ρ DM = 0.3 GeV / cm 3 . The constraints scale inversely with $$\rho _{\mathrm{DM}}$$ ρ DM and are independent of the DM velocity distribution.
Published: 2020
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8. Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A. Barbano, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, S. Böser, O. Botner, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, H.-P. Bretz, S. Bron, J. Brostean-Kaiser, A. Burgman, R. S. Busse, T. Carver, C. Chen, E. Cheung, D. Chirkin, K. Clark, L. Classen, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, J. P. A. M. de André, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, H. Dujmovic, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, J. J. Evans, P. A. Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, A. Franckowiak, E. Friedman, A. Fritz, T. K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, K. Ghorbani, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, M. Günder, M. Gündüz, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, F. Henningsen, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, W. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J. L. Kelley, A. Kheirandish, J. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, G. Krückl, N. Kulacz, S. Kunwar, N. Kurahashi, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, K. Leonard, M. Leuermann, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, J. Lünemann, W. Luszczak, J. Madsen, G. Maggi, K. B. M. Mahn, Y. Makino, K. Mallot, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, R. Maunu, K. Meagher, M. Medici, A. Medina, M. Meier, S. Meighen-Berger, T. Menne, G. Merino, T. Meures, S. Miarecki, J. Micallef, G. Momenté, T. Montaruli, R. W. Moore, M. Moulai, R. Nagai, R. Nahnhauer, P. Nakarmi, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, E. O’Sullivan, T. Palczewski, H. Pandya, D. V. Pankova, N. Park, P. Peiffer, C. Pérez de los Heros, D. Pieloth, E. Pinat, A. Pizzuto, M. Plum, P. B. Price, G. T. Przybylski, C. Raab, A. Raissi, M. Rameez, L. Rauch, K. Rawlins, I. C. Rea, R. Reimann, B. Relethford, G. Renzi, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, M. Silva, R. Snihur, J. Soedingrekso, D. Soldin, S. Söldner-Rembold, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, A. Stasik, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, M. Sutherland, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, B. Ty, E. Unger, M. A. Unland Elorrieta, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, T. B. Watson, C. Weaver, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, S. Westerhoff, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood, K. Woschnagg, G. Wrede, S. Wren, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, and T. Yuan
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The Neutrino Mass Ordering (NMO) remains one of the outstanding questions in the field of neutrino physics. One strategy to measure the NMO is to observe matter effects in the oscillation pattern of atmospheric neutrinos above $$\sim 1\,\mathrm {GeV}$$ ∼1GeV , as proposed for several next-generation neutrino experiments. Moreover, the existing IceCube DeepCore detector can already explore this type of measurement. We present the development and application of two independent analyses to search for the signature of the NMO with three years of DeepCore data. These analyses include a full treatment of systematic uncertainties and a statistically-rigorous method to determine the significance for the NMO from a fit to the data. Both analyses show that the dataset is fully compatible with both mass orderings. For the more sensitive analysis, we observe a preference for normal ordering with a p-value of $$p_\mathrm {IO} = 15.3\%$$ pIO=15.3% and $$\mathrm {CL}_\mathrm {s}=53.3\%$$ CLs=53.3% for the inverted ordering hypothesis, while the experimental results from both analyses are consistent within their uncertainties. Since the result is independent of the value of $$\delta _\mathrm {CP}$$ δCP and obtained from energies $$E_\nu \gtrsim 5\,\mathrm {GeV}$$ Eν≳5GeV , it is complementary to recent results from long-baseline experiments. These analyses set the groundwork for the future of this measurement with more capable detectors, such as the IceCube Upgrade and the proposed PINGU detector.
Published: 2020
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9. Constraints on Populations of Neutrino Sources from Searches in the Directions of IceCube Neutrino Alerts

Author: R. Abbasi, M. Ackermann, J. Adams, N. Aggarwal, J. A. Aguilar, M. Ahlers, J. M. Alameddine, A. A. Alves Jr., N. M. Amin, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Y. Ashida, S. Athanasiadou, S. N. Axani, X. Bai, A. Balagopal V., M. Baricevic, S. W. Barwick, V. Basu, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, J. Beise, C. Bellenghi, S. Benda, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, F. Bontempo, J. Y. Book, J. Borowka, C. Boscolo Meneguolo, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Braun, B. Brinson, J. Brostean-Kaiser, R. T. Burley, R. S. Busse, M. A. Campana, E. G. Carnie-Bronca, C. Chen, Z. Chen, D. Chirkin, K. Choi, B. A. Clark, L. Classen, A. Coleman, G. H. Collin, A. Connolly, J. M. Conrad, P. Coppin, P. Correa, S. Countryman, D. F. Cowen, R. Cross, C. Dappen, P. Dave, C. De Clercq, J. J. DeLaunay, D. Delgado López, H. Dembinski, K. Deoskar, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, M. Dittmer, H. Dujmovic, M. A. DuVernois, T. Ehrhardt, P. Eller, R. Engel, H. Erpenbeck, J. Evans, P. A. Evenson, K. L. Fan, A. R. Fazely, A. Fedynitch, N. Feigl, S. Fiedlschuster, A. T. Fienberg, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, A. Garcia, S. Garrappa, L. Gerhardt, A. Ghadimi, C. Glaser, T. Glauch, T. Glüsenkamp, N. Goehlke, J. G. Gonzalez, S. Goswami, D. Grant, S. J. Gray, T. Grégoire, S. Griswold, C. Günther, P. Gutjahr, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, H. Hamdaoui, M. Ha Minh, K. Hanson, J. Hardin, A. A. Harnisch, P. Hatch, A. Haungs, K. Helbing, J. Hellrung, F. Henningsen, L. Heuermann, S. Hickford, A. Hidvegi, C. Hill, G. C. Hill, K. D. Hoffman, K. Hoshina, W. Hou, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, K. Hymon, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, M. Jin, B. J. P. Jones, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, L. Kardum, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J. L. Kelley, A. Kheirandish, K. Kin, J. Kiryluk, S. R. Klein, A. Kochocki, R. Koirala, H. Kolanoski, T. Kontrimas, L. Köpke, C. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, T. Kozynets, E. Krupczak, E. Kun, N. Kurahashi, N. Lad, C. Lagunas Gualda, M. J. Larson, F. Lauber, J. P. Lazar, J. W. Lee, K. Leonard, A. Leszczyńska, M. Lincetto, Q. R. Liu, M. Liubarska, E. Lohfink, C. Love, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, S. Mancina, W. Marie Sainte, I. C. Mariş, S. Marka, Z. Marka, M. Marsee, I. Martinez-Soler, R. Maruyama, T. McElroy, F. McNally, J. V. Mead, K. Meagher, S. Mechbal, A. Medina, M. Meier, S. Meighen-Berger, Y. Merckx, J. Micallef, D. Mockler, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, T. Mukherjee, R. Naab, R. Nagai, U. Naumann, A. Nayerhoda, J. Necker, M. Neumann, H. Niederhausen, M. U. Nisa, A. Noell, S. C. Nowicki, A. Obertacke Pollmann, M. Oehler, B. Oeyen, A. Olivas, R. Orsoe, J. Osborn, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, L. Paul, C. Pérez de los Heros, L. Peters, J. Peterson, S. Philippen, S. Pieper, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, B. Pries, R. Procter-Murphy, G. T. Przybylski, C. Raab, J. Rack-Helleis, M. Rameez, K. Rawlins, Z. Rechav, A. Rehman, P. Reichherzer, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, E. J. Roberts, S. Robertson, S. Rodan, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, L. Ruohan, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, J. Saffer, D. Salazar-Gallegos, P. Sampathkumar, S. E. Sanchez Herrera, A. Sandrock, M. Santander, S. Sarkar, J. Savelberg, M. Schaufel, H. Schieler, S. Schindler, B. Schlueter, T. Schmidt, J. Schneider, F. G. Schröder, L. Schumacher, G. Schwefer, S. Sclafani, S. Seunarine, A. Sharma, S. Shefali, N. Shimizu, M. Silva, B. Skrzypek, B. Smithers, R. Snihur, J. Soedingrekso, A. Søgaard, D. Soldin, C. Spannfellner, G. M. Spiczak, C. Spiering, M. Stamatikos, T. Stanev, R. Stein, T. Stezelberger, T. Stürwald, T. Stuttard, G. W. Sullivan, I. Taboada, S. Ter-Antonyan, W. G. Thompson, J. Thwaites, S. Tilav, K. Tollefson, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, C. F. Tung, R. Turcotte, J. P. Twagirayezu, B. Ty, M. A. Unland Elorrieta, K. Upshaw, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, J. Vara, J. Veitch-Michaelis, S. Verpoest, D. Veske, C. Walck, W. Wang, T. B. Watson, C. Weaver, P. Weigel, A. Weindl, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, N. Whitehorn, C. H. Wiebusch, N. Willey, D. R. Williams, M. Wolf, G. Wrede, J. Wulff, X. W. Xu, J. P. Yanez, E. Yildizci, S. Yoshida, S. Yu, T. Yuan, Z. Zhang, P. Zhelnin, and IceCube Collaboration
Subjects: High energy astrophysics, Neutrino astronomy, Transient sources, Astrophysics, QB460-466
Abstract: Beginning in 2016, the IceCube Neutrino Observatory has sent out alerts in real time containing the information of high-energy ( E ≳ 100 TeV) neutrino candidate events with moderate to high (≳30%) probability of astrophysical origin. In this work, we use a recent catalog of such alert events, which, in addition to events announced in real time, includes events that were identified retroactively and covers the time period of 2011–2020. We also search for additional, lower-energy neutrinos from the arrival directions of these IceCube alerts. We show how performing such an analysis can constrain the contribution of rare populations of cosmic neutrino sources to the diffuse astrophysical neutrino flux. After searching for neutrino emission coincident with these alert events on various timescales, we find no significant evidence of either minute-scale or day-scale transient neutrino emission or of steady neutrino emission in the direction of these alert events. This study also shows how numerous a population of neutrino sources has to be to account for the complete astrophysical neutrino flux. Assuming that sources have the same luminosity, an E ^−2.5 neutrino spectrum, and number densities that follow star formation rates, the population of sources has to be more numerous than 7 × 10 ^−9 Mpc ^−3 . This number changes to 3 × 10 ^−7 Mpc ^−3 if number densities instead have no cosmic evolution.
Published: 2023
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10. IceCube Search for Neutrinos Coincident with Gravitational Wave Events from LIGO/Virgo Run O3

Author: R. Abbasi, M. Ackermann, J. Adams, N. Aggarwal, J. A. Aguilar, M. Ahlers, M. Ahrens, J. M. Alameddine, A. A. Alves Jr., N. M. Amin, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Y. Asali, Y. Ashida, S. Athanasiadou, S. Axani, X. Bai, A. Balagopal V., M. Baricevic, I. Bartos, S. W. Barwick, V. Basu, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, J. Beise, C. Bellenghi, S. Benda, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, F. Bontempo, J. Y. Book, J. Borowka, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, F. Bradascio, J. Braun, B. Brinson, S. Bron, J. Brostean-Kaiser, R. T. Burley, R. S. Busse, M. A. Campana, E. G. Carnie-Bronca, C. Chen, Z. Chen, D. Chirkin, K. Choi, B. A. Clark, L. Classen, A. Coleman, G. H. Collin, A. Connolly, J. M. Conrad, P. Coppin, P. Correa, S. T. Countryman, D. F. Cowen, R. Cross, C. Dappen, P. Dave, C. De Clercq, J. J. DeLaunay, D. Delgado López, H. Dembinski, K. Deoskar, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, M. Dittmer, H. Dujmovic, M. A. DuVernois, T. Ehrhardt, P. Eller, R. Engel, H. Erpenbeck, J. Evans, P. A. Evenson, K. L. Fan, A. R. Fazely, A. Fedynitch, N. Feigl, S. Fiedlschuster, A. T. Fienberg, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, A. Garcia, S. Garrappa, L. Gerhardt, A. Ghadimi, C. Glaser, T. Glauch, T. Glüsenkamp, N. Goehlke, J. G. Gonzalez, S. Goswami, D. Grant, T. Grégoire, S. Griswold, C. Günther, P. Gutjahr, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, H. Hamdaoui, M. Ha Minh, K. Hanson, J. Hardin, A. A. Harnisch, P. Hatch, A. Haungs, K. Helbing, J. Hellrung, F. Henningsen, L. Heuermann, S. Hickford, C. Hill, G. C. Hill, K. D. Hoffman, K. Hoshina, W. Hou, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, K. Hymon, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, M. Jin, B. J. P. Jones, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, L. Kardum, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J. L. Kelley, A. Kheirandish, K. Kin, J. Kiryluk, S. R. Klein, A. Kochocki, R. Koirala, H. Kolanoski, T. Kontrimas, L. Köpke, C. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, T. Kozynets, E. Krupczak, E. Kun, N. Kurahashi, N. Lad, C. Lagunas Gualda, M. J. Larson, F. Lauber, J. P. Lazar, J. W. Lee, K. Leonard, A. Leszczyńska, M. Lincetto, Q. R. Liu, M. Liubarska, E. Lohfink, C. Love, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, S. Mancina, W. Marie Sainte, I. C. Mariş, S. Márka, Z. Márka, M. Marsee, I. Martinez-Soler, R. Maruyama, T. McElroy, F. McNally, J. V. Mead, K. Meagher, S. Mechbal, A. Medina, M. Meier, S. Meighen-Berger, Y. Merckx, J. Micallef, D. Mockler, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, T. Mukherjee, R. Naab, R. Nagai, U. Naumann, J. Necker, M. Neumann, H. Niederhausen, M. U. Nisa, S. C. Nowicki, A. Obertacke Pollmann, M. Oehler, B. Oeyen, A. Olivas, R. Orsoe, J. Osborn, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, L. Paul, C. Pérez de los Heros, L. Peters, J. Peterson, S. Philippen, S. Pieper, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, B. Pries, G. T. Przybylski, C. Raab, J. Rack-Helleis, M. Rameez, K. Rawlins, Z. Rechav, A. Rehman, P. Reichherzer, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, E. J. Roberts, S. Robertson, S. Rodan, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, L. Ruohan, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, J. Saffer, D. Salazar-Gallegos, P. Sampathkumar, S. E. Sanchez Herrera, A. Sandrock, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, H. Schieler, S. Schindler, B. Schlueter, T. Schmidt, J. Schneider, F. G. Schröder, L. Schumacher, G. Schwefer, S. Sclafani, D. Seckel, S. Seunarine, A. Sharma, S. Shefali, N. Shimizu, M. Silva, A. C. Silva Oliveira, B. Skrzypek, B. Smithers, R. Snihur, J. Soedingrekso, A. Sogaard, D. Soldin, C. Spannfellner, G. M. Spiczak, C. Spiering, M. Stamatikos, T. Stanev, R. Stein, T. Stezelberger, T. Stürwald, T. Stuttard, A. G. Sullivan, G. W. Sullivan, I. Taboada, S. Ter-Antonyan, W. G. Thompson, J. Thwaites, S. Tilav, K. Tollefson, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, C. F. Tung, R. Turcotte, J. P. Twagirayezu, B. Ty, M. A. Unland Elorrieta, K. Upshaw, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, J. Vara, J. Veitch-Michaelis, S. Verpoest, D. Veske, C. Walck, W. Wang, T. B. Watson, C. Weaver, P. Weigel, A. Weindl, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, N. Whitehorn, C. H. Wiebusch, N. Willey, D. R. Williams, M. Wolf, G. Wrede, J. Wulff, X. W. Xu, J. P. Yanez, E. Yildizci, S. Yoshida, S. Yu, T. Yuan, Z. Zhang, P. Zhelnin, and The IceCube Collaboration
Subjects: Neutrino astronomy, Neutrino telescopes, Gravitational waves, Multi-messenger Astrophysics, Gravitational wave astronomy, High energy astrophysics, Astrophysics, QB460-466
Abstract: Using data from the IceCube Neutrino Observatory, we searched for high-energy neutrino emission from the gravitational-wave events detected by the advanced LIGO and Virgo detectors during their third observing run. We did a low-latency follow-up on the public candidate events released during the detectors’ third observing run and an archival search on the 80 confident events reported in the GWTC-2.1 and GWTC-3 catalogs. An extended search was also conducted for neutrino emission on longer timescales from neutron star containing mergers. Follow-up searches on the candidate optical counterpart of GW190521 were also conducted. We used two methods; an unbinned maximum likelihood analysis and a Bayesian analysis using astrophysical priors, both of which were previously used to search for high-energy neutrino emission from gravitational-wave events. No significant neutrino emission was observed by any analysis, and upper limits were placed on the time-integrated neutrino flux as well as the total isotropic equivalent energy emitted in high-energy neutrinos.
Published: 2023
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11. Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data

Author: IceCube Collaboration, M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A. Barbano, J. P. Barron, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K.-H. Becker, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, F. Bos, S. Böser, O. Botner, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, H.-P. Bretz, S. Bron, J. Brostean-Kaiser, A. Burgman, R. S. Busse, T. Carver, C. Chen, E. Cheung, D. Chirkin, K. Clark, L. Classen, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, M. Day, J. P. A. M. de André, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. Díaz-Vélez, H. Dujmovic, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, P. A. Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, A. Franckowiak, E. Friedman, A. Fritz, T. K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, K. Ghorbani, W. Giang, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, P. Kalaczynski, W. Kang, A. Kappes, D. Kappesser, T. Karg, A. Karle, U. Katz, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, S. Kunwar, N. Kurahashi, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, K. Leonard, M. Leuermann, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, J. Lünemann, W. Luszczak, J. Madsen, G. Maggi, K. B. M. Mahn, Y. Makino, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, R. Maunu, K. Meagher, M. Medici, M. Meier, T. Menne, G. Merino, T. Meures, S. Miarecki, J. Micallef, G. Momenté, T. Montaruli, R. W. Moore, M. Moulai, R. Nagai, R. Nahnhauer, P. Nakarmi, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, E. O’Sullivan, T. Palczewski, H. Pandya, D. V. Pankova, P. Peiffer, C. Pérez de los Heros, D. Pieloth, E. Pinat, A. Pizzuto, M. Plum, P. B. Price, G. T. Przybylski, C. Raab, M. Rameez, L. Rauch, K. Rawlins, I. C. Rea, R. Reimann, B. Relethford, G. Renzi, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, S. Schöneberg, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, J. Soedingrekso, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, A. Stasik, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, M. Sutherland, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, M. N. Tobin, C. Tönnis, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, B. Ty, E. Unger, M. A. Unland Elorrieta, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, F. D. Wandler, N. Wandkowsky, T. B. Watson, C. Weaver, M. J. Weiss, C. Wendt, J. Werthebach, S. Westerhoff, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood, E. Woolsey, K. Woschnagg, G. Wrede, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, and T. Yuan
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The IceCube Collaboration has observed a high-energy astrophysical neutrino flux and recently found evidence for neutrino emission from the blazar TXS 0506$$+$$ + 056. These results open a new window into the high-energy universe. However, the source or sources of most of the observed flux of astrophysical neutrinos remains uncertain. Here, a search for steady point-like neutrino sources is performed using an unbinned likelihood analysis. The method searches for a spatial accumulation of muon-neutrino events using the very high-statistics sample of about 497,000 neutrinos recorded by IceCube between 2009 and 2017. The median angular resolution is $$\sim 1^\circ $$ ∼1∘ at 1 TeV and improves to $$\sim 0.3^\circ $$ ∼0.3∘ for neutrinos with an energy of 1 PeV. Compared to previous analyses, this search is optimized for point-like neutrino emission with the same flux-characteristics as the observed astrophysical muon-neutrino flux and introduces an improved event-reconstruction and parametrization of the background. The result is an improvement in sensitivity to the muon-neutrino flux compared to the previous analysis of $$\sim 35\%$$ ∼35% assuming an $$E^{-2}$$ E-2 spectrum. The sensitivity on the muon-neutrino flux is at a level of $$E^2 \mathrm {d} N /\mathrm {d} E = 3\cdot 10^{-13}\,\mathrm {TeV}\,\mathrm {cm}^{-2}\,\mathrm {s}^{-1}$$ E2dN/dE=3·10-13TeVcm-2s-1 . No new evidence for neutrino sources is found in a full sky scan and in an a priori candidate source list that is motivated by gamma-ray observations. Furthermore, no significant excesses above background are found from populations of sub-threshold sources. The implications of the non-observation for potential source classes are discussed.
Published: 2019
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12. Erratum to: Search for annihilating dark matter in the Sun with 3 years of IceCube data

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, M. Archinger, C. Argüelles, J. Auffenberg, S. Axani, X. Bai, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K.-H. Becker, S. BenZvi, D. Berley, E. Bernardini, A. Bernhard, D. Z. Besson, G. Binder, D. Bindig, M. Bissok, E. Blaufuss, S. Blot, C. Bohm, M. Börner, F. Bos, D. Bose, S. Böser, O. Botner, J. Braun, L. Brayeur, H.-P. Bretz, S. Bron, A. Burgman, T. Carver, M. Casier, E. Cheung, D. Chirkin, A. Christov, K. Clark, L. Classen, S. Coenders, G. H. Collin, J. M. Conrad, D. F. Cowen, R. Cross, M. Day, J. P. A. M. de André, C. De Clercq, E. del Pino Rosendo, H. Dembinski, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. Díaz-Vélez, V. di Lorenzo, H. Dujmovic, J. P. Dumm, M. Dunkman, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, S. Euler, P. A. Evenson, S. Fahey, A. R. Fazely, J. Feintzeig, J. Felde, K. Filimonov, C. Finley, S. Flis, C.-C. Fösig, A. Franckowiak, E. Friedman, T. Fuchs, T. K. Gaisser, J. Gallagher, L. Gerhardt, K. Ghorbani, W. Giang, L. Gladstone, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, C. Haack, A. Hallgren, F. Halzen, E. Hansen, T. Hansmann, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, S. In, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, W. Kang, A. Kappes, T. Karg, A. Karle, U. Katz, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, M. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, G. Kohnen, R. Koirala, H. Kolanoski, R. Konietz, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, C. Krüger, J. Kunnen, S. Kunwar, N. Kurahashi, T. Kuwabara, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, D. Lennarz, M. Lesiak-Bzdak, M. Leuermann, L. Lu, J. Lünemann, J. Madsen, G. Maggi, K. B. M. Mahn, S. Mancina, M. Mandelartz, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, M. Meier, A. Meli, T. Menne, G. Merino, T. Meures, S. Miarecki, T. Montaruli, M. Moulai, R. Nahnhauer, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, T. Palczewski, H. Pandya, D. V. Pankova, P. Peiffer, Ö. Penek, J. A. Pepper, C. Pérez de los Heros, D. Pieloth, E. Pinat, P. B. Price, G. T. Przybylski, M. Quinnan, C. Raab, L. Rädel, M. Rameez, K. Rawlins, R. Reimann, B. Relethford, M. Relich, E. Resconi, W. Rhode, M. Richman, B. Riedel, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, L. Sabbatini, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, S. Sarkar, K. Satalecka, P. Schlunder, T. Schmidt, S. Schoenen, S. Schöneberg, L. Schumacher, D. Seckel, S. Seunarine, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, T. Stanev, A. Stasik, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, R. Ström, N. L. Strotjohann, G. W. Sullivan, M. Sutherland, H. Taavola, I. Taboada, J. Tatar, F. Tenholt, S. Ter-Antonyan, A. Terliuk, G. Tešić, S. Tilav, P. A. Toale, M. N. Tobin, S. Toscano, D. Tosi, M. Tselengidou, A. Turcati, E. Unger, M. Usner, J. Vandenbroucke, N. van Eijndhoven, S. Vanheule, M. van Rossem, J. van Santen, M. Vehring, M. Voge, E. Vogel, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, Ch. Weaver, M. J. Weiss, C. Wendt, S. Westerhoff, B. J. Whelan, S. Wickmann, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, T. R. Wood, E. Woolsey, K. Woschnagg, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, and M. Zoll
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: In the analysis published in 1, constraints on the number of signal events can be interpreted as constraints on the volumetric neutrino to muon conversion rate.
Published: 2019
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13. Search for neutrinos from decaying dark matter with IceCube

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, I. Al Samarai, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, J. P. Barron, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K.-H. Becker, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, F. Bos, S. Böser, O. Botner, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, M. Brenzke, H.-P. Bretz, S. Bron, J. Brostean-Kaiser, A. Burgman, R. S. Busse, T. Carver, E. Cheung, D. Chirkin, A. Christov, K. Clark, L. Classen, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, M. Day, J. P. A. M. de André, C. De Clercq, J. J. DeLaunay, H. Dembinski, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. Díaz-Vélez, V. di Lorenzo, H. Dujmovic, J. P. Dumm, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, P. A. Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, S. Flis, A. Franckowiak, E. Friedman, A. Fritz, T. K. Gaisser, J. Gallagher, E. Ganster, L. Gerhardt, K. Ghorbani, W. Giang, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, P. Kalaczynski, W. Kang, A. Kappes, D. Kappesser, T. Karg, A. Karle, U. Katz, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, M. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, J. P. Koschinsky, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, S. Kunwar, N. Kurahashi, T. Kuwabara, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, K. Leonard, M. Lesiak-Bzdak, M. Leuermann, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, J. Lünemann, W. Luszczak, J. Madsen, G. Maggi, K. B. M. Mahn, S. Mancina, R. Maruyama, K. Mase, R. Maunu, K. Meagher, M. Medici, M. Meier, T. Menne, G. Merino, T. Meures, S. Miarecki, J. Micallef, G. Momenté, T. Montaruli, R. W. Moore, M. Moulai, R. Nahnhauer, P. Nakarmi, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, E. O’Sullivan, T. Palczewski, H. Pandya, D. V. Pankova, P. Peiffer, J. A. Pepper, C. Pérez de los Heros, D. Pieloth, E. Pinat, M. Plum, P. B. Price, G. T. Przybylski, C. Raab, L. Rädel, M. Rameez, L. Rauch, K. Rawlins, I. C. Rea, R. Reimann, B. Relethford, M. Relich, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, P. Schlunder, T. Schmidt, A. Schneider, S. Schoenen, S. Schöneberg, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, J. Soedingrekso, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, A. Stasik, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, M. Sutherland, I. Taboada, J. Tatar, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, P. A. Toale, M. N. Tobin, C. Tönnis, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A. Turcati, C. F. Turley, B. Ty, E. Unger, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, F. D. Wandler, N. Wandkowsky, A. Waza, C. Weaver, M. J. Weiss, C. Wendt, J. Werthebach, S. Westerhoff, B. J. Whelan, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood, E. Woolsey, K. Woschnagg, G. Wrede, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, and T. Yuan
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino ‘track’ events from the Northern Hemisphere, while the second analysis uses 2 years of ‘cascade’ events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than $$10^{28}\hbox { s}$$ 1028s at 90% CL for dark matter masses above $$10~\hbox {TeV}$$ 10TeV .
Published: 2018
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14. Erratum to: Search for non-relativistic magnetic monopoles with IceCube

Author: M. G. Aartsen, R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, D. Altmann, C. Arguelles, T. C. Arlen, J. Auffenberg, X. Bai, M. Baker, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K. -H. Becker, M. L. Benabderrahmane, S. BenZvi, P. Berghaus, D. Berley, E. Bernardini, A. Bernhard, D. Z. Besson, G. Binder, D. Bindig, M. Bissok, E. Blaufuss, J. Blumenthal, D. J. Boersma, C. Bohm, D. Bose, S. Böser, O. Botner, L. Brayeur, H. -P. Bretz, A. M. Brown, R. Bruijn, J. Casey, M. Casier, D. Chirkin, A. Christov, B. Christy, K. Clark, L. Classen, F. Clevermann, S. Coenders, S. Cohen, D. F. Cowen, A. H. Cruz Silva, M. Danninger, J. Daughhetee, J. C. Davis, M. Day, J. P. A. M. de André, C. De Clercq, S. De Ridder, P. Desiati, K. D. de Vries, M. de With, T. DeYoung, J. C. Díaz-Vélez, M. Dunkman, R. Eagan, B. Eberhardt, B. Eichmann, J. Eisch, S. Euler, P. A. Evenson, O. Fadiran, A. R. Fazely, A. Fedynitch, J. Feintzeig, T. Feusels, K. Filimonov, C. Finley, T. Fischer-Wasels, S. Flis, A. Franckowiak, K. Frantzen, T. Fuchs, T. K. Gaisser, J. Gallagher, L. Gerhardt, L. Gladstone, T. Glüsenkamp, A. Goldschmidt, G. Golup, J. G. Gonzalez, J. A. Goodman, D. Góra, D. T. Grandmont, D. Grant, P. Gretskov, J. C. Groh, A. Groß, C. Ha, C. Haack, A. Haj Ismail, P. Hallen, A. Hallgren, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, D. Heinen, K. Helbing, R. Hellauer, S. Hickford, G. C. Hill, K. D. Hoffman, R. Hoffmann, A. Homeier, K. Hoshina, F. Huang, W. Huelsnitz, P. O. Hulth, K. Hultqvist, S. Hussain, A. Ishihara, E. Jacobi, J. Jacobsen, K. Jagielski, G. S. Japaridze, K. Jero, O. Jlelati, B. Kaminsky, A. Kappes, T. Karg, A. Karle, M. Kauer, J. L. Kelley, J. Kiryluk, J. Kläs, S. R. Klein, J. -H. Köhne, G. Kohnen, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, M. Krasberg, A. Kriesten, K. Krings, G. Kroll, J. Kunnen, N. Kurahashi, T. Kuwabara, M. Labare, H. Landsman, M. J. Larson, M. Lesiak-Bzdak, M. Leuermann, J. Leute, J. Lünemann, O. Macías, J. Madsen, G. Maggi, R. Maruyama, K. Mase, H. S. Matis, F. McNally, K. Meagher, A. Meli, M. Merck, T. Meures, S. Miarecki, E. Middell, N. Milke, J. Miller, L. Mohrmann, T. Montaruli, R. Morse, R. Nahnhauer, U. Naumann, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke, S. Odrowski, A. Olivas, A. Omairat, A. O’Murchadha, T. Palczewski, L. Paul, J. A. Pepper, C. Pérez de los Heros, C. Pfendner, D. Pieloth, E. Pinat, J. Posselt, P. B. Price, G. T. Przybylski, M. Quinnan, L. Rädel, M. Rameez, K. Rawlins, P. Redl, R. Reimann, E. Resconi, W. Rhode, M. Ribordy, M. Richman, B. Riedel, S. Robertson, J. P. Rodrigues, C. Rott, T. Ruhe, B. Ruzybayev, D. Ryckbosch, S. M. Saba, H. -G. Sander, M. Santander, S. Sarkar, K. Schatto, F. Scheriau, T. Schmidt, M. Schmitz, S. Schoenen, S. Schöneberg, A. Schönwald, A. Schukraft, L. Schulte, O. Schulz, D. Seckel, Y. Sestayo, S. Seunarine, R. Shanidze, C. Sheremata, M. W. E. Smith, D. Soldin, G. M. Spiczak, C. Spiering, M. Stamatikos, T. Stanev, N. A. Stanisha, A. Stasik, T. Stezelberger, R. G. Stokstad, A. Stößl, E. A. Strahler, R. Ström, N. L. Strotjohann, G. W. Sullivan, H. Taavola, I. Taboada, A. Tamburro, A. Tepe, S. Ter-Antonyan, G. Tešić, S. Tilav, P. A. Toale, M. N. Tobin, S. Toscano, M. Tselengidou, E. Unger, M. Usner, S. Vallecorsa, N. van Eijndhoven, J. van Santen, M. Vehring, M. Voge, M. Vraeghe, C. Walck, M. Wallraff, Ch. Weaver, M. Wellons, C. Wendt, S. Westerhoff, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, D. R. Williams, H. Wissing, M. Wolf, T. R. Wood, K. Woschnagg, D. L. Xu, X. W. Xu, J. P. Yanez, G. Yodh, S. Yoshida, P. Zarzhitsky, J. Ziemann, S. Zierke, and M. Zoll
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: In the analyses, published in Ref. [1], the exclusion limits are calculated in dependence of the mean free path of the magnetic monopole - nucleon catalysis interaction.
Published: 2019
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15. Measurement of the $$\nu _{\mu }$$ νμ energy spectrum with IceCube-79

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, I. Al Samarai, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, M. Archinger, C. Argüelles, J. Auffenberg, S. Axani, H. Bagherpour, X. Bai, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K.-H. Becker, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, F. Bos, D. Bose, S. Böser, O. Botner, F. Bradascio, J. Braun, L. Brayeur, H.-P. Bretz, S. Bron, A. Burgman, T. Carver, M. Casier, E. Cheung, D. Chirkin, A. Christov, K. Clark, L. Classen, S. Coenders, G. H. Collin, J. M. Conrad, D. F. Cowen, R. Cross, M. Day, J. P. A. M. de André, C. De Clercq, E. del Pino Rosendo, H. Dembinski, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. Díaz-Vélez, V. di Lorenzo, H. Dujmovic, J. P. Dumm, M. Dunkman, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, S. Euler, P. A. Evenson, S. Fahey, A. R. Fazely, J. Feintzeig, J. Felde, K. Filimonov, C. Finley, S. Flis, C.-C. Fösig, A. Franckowiak, E. Friedman, T. Fuchs, T. K. Gaisser, J. Gallagher, L. Gerhardt, K. Ghorbani, W. Giang, L. Gladstone, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, C. Haack, A. Hallgren, F. Halzen, E. Hansen, T. Hansmann, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, S. In, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, W. Kang, A. Kappes, T. Karg, A. Karle, U. Katz, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, M. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, G. Kohnen, R. Koirala, H. Kolanoski, R. Konietz, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, C. Krüger, J. Kunnen, S. Kunwar, N. Kurahashi, T. Kuwabara, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, D. Lennarz, M. Lesiak-Bzdak, M. Leuermann, L. Lu, J. Lünemann, J. Madsen, G. Maggi, K. B. M. Mahn, S. Mancina, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, M. Meier, T. Menne, G. Merino, T. Meures, S. Miarecki, J. Micallef, G. Momenté, T. Montaruli, M. Moulai, R. Nahnhauer, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, T. Palczewski, H. Pandya, D. V. Pankova, P. Peiffer, Ö. Penek, J. A. Pepper, C. Pérez de los Heros, D. Pieloth, E. Pinat, P. B. Price, G. T. Przybylski, M. Quinnan, C. Raab, L. Rädel, M. Rameez, K. Rawlins, R. Reimann, B. Relethford, M. Relich, E. Resconi, W. Rhode, M. Richman, B. Riedel, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, L. Sabbatini, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, S. Sarkar, K. Satalecka, P. Schlunder, T. Schmidt, S. Schoenen, S. Schöneberg, L. Schumacher, D. Seckel, S. Seunarine, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, T. Stanev, A. Stasik, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, R. Ström, N. L. Strotjohann, G. W. Sullivan, M. Sutherland, H. Taavola, I. Taboada, J. Tatar, F. Tenholt, S. Ter-Antonyan, A. Terliuk, G. Tešić, S. Tilav, P. A. Toale, M. N. Tobin, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A. Turcati, E. Unger, M. Usner, J. Vandenbroucke, N. van Eijndhoven, S. Vanheule, M. van Rossem, J. van Santen, M. Vehring, M. Voge, E. Vogel, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, A. Waza, Ch. Weaver, M. J. Weiss, C. Wendt, S. Westerhoff, B. J. Whelan, S. Wickmann, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, T. R. Wood, E. Woolsey, K. Woschnagg, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, and M. Zoll
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract IceCube is a neutrino observatory deployed in the glacial ice at the geographic South Pole. The $$\nu _\mu $$ νμ energy unfolding described in this paper is based on data taken with IceCube in its 79-string configuration. A sample of muon neutrino charged-current interactions with a purity of 99.5% was selected by means of a multivariate classification process based on machine learning. The subsequent unfolding was performed using the software Truee. The resulting spectrum covers an E$$_\nu $$ ν -range of more than four orders of magnitude from 125 GeV to 3.2 PeV. Compared to the Honda atmospheric neutrino flux model, the energy spectrum shows an excess of more than $$1.9\,\sigma $$ 1.9σ in four adjacent bins for neutrino energies $$E_\nu \ge 177.8\,\text {TeV}$$ Eν≥177.8TeV . The obtained spectrum is fully compatible with previous measurements of the atmospheric neutrino flux and recent IceCube measurements of a flux of high-energy astrophysical neutrinos.
Published: 2017
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16. Search for neutrinos from dark matter self-annihilations in the center of the Milky Way with 3 years of IceCube/DeepCore

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, I. Al Samarai, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, H. Bagherpour, X. Bai, J. P. Barron, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K. -H. Becker, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, F. Bos, D. Bose, S. Böser, O. Botner, J. Bourbeau, F. Bradascio, J. Braun, L. Brayeur, M. Brenzke, H. -P. Bretz, S. Bron, A. Burgman, T. Carver, J. Casey, M. Casier, E. Cheung, D. Chirkin, A. Christov, K. Clark, L. Classen, S. Coenders, G. H. Collin, J. M. Conrad, D. F. Cowen, R. Cross, M. Day, J. P. A. M. de André, C. De Clercq, J. J. DeLaunay, H. Dembinski, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. Díaz-Vélez, V. di Lorenzo, H. Dujmovic, J. P. Dumm, M. Dunkman, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, P. A. Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, S. Flis, A. Franckowiak, E. Friedman, T. Fuchs, T. K. Gaisser, J. Gallagher, L. Gerhardt, K. Ghorbani, W. Giang, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, C. Haack, A. Hallgren, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, S. In, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, P. Kalacynski, W. Kang, A. Kappes, T. Karg, A. Karle, U. Katz, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, M. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, G. Kohnen, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, J. P. Koschinsky, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, J. Kunnen, S. Kunwar, N. Kurahashi, T. Kuwabara, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, D. Lennarz, M. Lesiak-Bzdak, M. Leuermann, Q. R. Liu, L. Lu, J. Lünemann, W. Luszczak, J. Madsen, G. Maggi, K. B. M. Mahn, S. Mancina, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, M. Meier, T. Menne, G. Merino, T. Meures, S. Miarecki, J. Micallef, G. Momenté, T. Montaruli, R. W. Moore, M. Moulai, R. Nahnhauer, P. Nakarmi, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, T. Palczewski, H. Pandya, D. V. Pankova, P. Peiffer, J. A. Pepper, C. Pérez de los Heros, D. Pieloth, E. Pinat, M. Plum, P. B. Price, G. T. Przybylski, C. Raab, L. Rädel, M. Rameez, K. Rawlins, R. Reimann, B. Relethford, M. Relich, E. Resconi, W. Rhode, M. Richman, B. Riedel, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, T. Sälzer, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, S. Sarkar, K. Satalecka, P. Schlunder, T. Schmidt, A. Schneider, S. Schoenen, S. Schöneberg, L. Schumacher, D. Seckel, S. Seunarine, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, T. Stanev, A. Stasik, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, N. L. Strotjohann, G. W. Sullivan, M. Sutherland, I. Taboada, J. Tatar, F. Tenholt, S. Ter-Antonyan, A. Terliuk, G. Tešić, S. Tilav, P. A. Toale, M. N. Tobin, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A. Turcati, C. F. Turley, B. Ty, E. Unger, M. Usner, J. Vandenbroucke, W. Van Driessche, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vehring, E. Vogel, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, F. D. Wandler, N. Wandkowsky, A. Waza, C. Weaver, M. J. Weiss, C. Wendt, S. Westerhoff, B. J. Whelan, S. Wickmann, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood, E. Woolsey, K. Woschnagg, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, T. Yuan, and M. Zoll
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We present a search for a neutrino signal from dark matter self-annihilations in the Milky Way using the IceCube Neutrino Observatory (IceCube). In 1005 days of data we found no significant excess of neutrinos over the background of neutrinos produced in atmospheric air showers from cosmic ray interactions. We derive upper limits on the velocity averaged product of the dark matter self-annihilation cross section and the relative velocity of the dark matter particles $$\langle \sigma _{\text {A}}v\rangle $$ ⟨ σ A v ⟩ . Upper limits are set for dark matter particle candidate masses ranging from 10 GeV up to 1 TeV while considering annihilation through multiple channels. This work sets the most stringent limit on a neutrino signal from dark matter with mass between 10 and 100 GeV, with a limit of $$1.18\cdot 10^{-23}\text { cm}^3\text {s}^{-1}$$ 1.18 · 10 - 23 cm 3 s - 1 for 100 GeV dark matter particles self-annihilating via $$\tau ^+\tau ^-$$ τ + τ - to neutrinos (assuming the Navarro–Frenk–White dark matter halo profile).
Published: 2017
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17. Search for annihilating dark matter in the Sun with 3 years of IceCube data

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, M. Archinger, C. Argüelles, J. Auffenberg, S. Axani, X. Bai, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K.-H. Becker, S. BenZvi, D. Berley, E. Bernardini, A. Bernhard, D. Z. Besson, G. Binder, D. Bindig, M. Bissok, E. Blaufuss, S. Blot, C. Bohm, M. Börner, F. Bos, D. Bose, S. Böser, O. Botner, J. Braun, L. Brayeur, H.-P. Bretz, S. Bron, A. Burgman, T. Carver, M. Casier, E. Cheung, D. Chirkin, A. Christov, K. Clark, L. Classen, S. Coenders, G. H. Collin, J. M. Conrad, D. F. Cowen, R. Cross, M. Day, J. P. A. M. de André, C. De Clercq, E. del Pino Rosendo, H. Dembinski, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. Díaz-Vélez, V. di Lorenzo, H. Dujmovic, J. P. Dumm, M. Dunkman, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, S. Euler, P. A. Evenson, S. Fahey, A. R. Fazely, J. Feintzeig, J. Felde, K. Filimonov, C. Finley, S. Flis, C.-C. Fösig, A. Franckowiak, E. Friedman, T. Fuchs, T. K. Gaisser, J. Gallagher, L. Gerhardt, K. Ghorbani, W. Giang, L. Gladstone, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, C. Haack, A. Hallgren, F. Halzen, E. Hansen, T. Hansmann, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, S. In, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, W. Kang, A. Kappes, T. Karg, A. Karle, U. Katz, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, M. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, G. Kohnen, R. Koirala, H. Kolanoski, R. Konietz, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, C. Krüger, J. Kunnen, S. Kunwar, N. Kurahashi, T. Kuwabara, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, D. Lennarz, M. Lesiak-Bzdak, M. Leuermann, L. Lu, J. Lünemann, J. Madsen, G. Maggi, K. B. M. Mahn, S. Mancina, M. Mandelartz, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, M. Meier, A. Meli, T. Menne, G. Merino, T. Meures, S. Miarecki, T. Montaruli, M. Moulai, R. Nahnhauer, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, T. Palczewski, H. Pandya, D. V. Pankova, P. Peiffer, Ö. Penek, J. A. Pepper, C. Pérez de los Heros, D. Pieloth, E. Pinat, P. B. Price, G. T. Przybylski, M. Quinnan, C. Raab, L. Rädel, M. Rameez, K. Rawlins, R. Reimann, B. Relethford, M. Relich, E. Resconi, W. Rhode, M. Richman, B. Riedel, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, L. Sabbatini, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, S. Sarkar, K. Satalecka, P. Schlunder, T. Schmidt, S. Schoenen, S. Schöneberg, L. Schumacher, D. Seckel, S. Seunarine, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, T. Stanev, A. Stasik, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, R. Ström, N. L. Strotjohann, G. W. Sullivan, M. Sutherland, H. Taavola, I. Taboada, J. Tatar, F. Tenholt, S. Ter-Antonyan, A. Terliuk, G. Tešić, S. Tilav, P. A. Toale, M. N. Tobin, S. Toscano, D. Tosi, M. Tselengidou, A. Turcati, E. Unger, M. Usner, J. Vandenbroucke, N. van Eijndhoven, S. Vanheule, M. van Rossem, J. van Santen, M. Vehring, M. Voge, E. Vogel, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, Ch. Weaver, M. J. Weiss, C. Wendt, S. Westerhoff, B. J. Whelan, S. Wickmann, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, T. R. Wood, E. Woolsey, K. Woschnagg, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, and M. Zoll
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We present results from an analysis looking for dark matter annihilation in the Sun with the IceCube neutrino telescope. Gravitationally trapped dark matter in the Sun’s core can annihilate into Standard Model particles making the Sun a source of GeV neutrinos. IceCube is able to detect neutrinos with energies >100 GeV while its low-energy infill array DeepCore extends this to >10 GeV. This analysis uses data gathered in the austral winters between May 2011 and May 2014, corresponding to 532 days of livetime when the Sun, being below the horizon, is a source of up-going neutrino events, easiest to discriminate against the dominant background of atmospheric muons. The sensitivity is a factor of two to four better than previous searches due to additional statistics and improved analysis methods involving better background rejection and reconstructions. The resultant upper limits on the spin-dependent dark matter-proton scattering cross section reach down to $$1.46\times 10^{-5}$$ 1.46×10-5 pb for a dark matter particle of mass 500 GeV annihilating exclusively into $$\tau ^{+}\tau ^{-}$$ τ+τ- particles. These are currently the most stringent limits on the spin-dependent dark matter-proton scattering cross section for WIMP masses above 50 GeV.
Published: 2017
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18. Search for Multimessenger Sources of Gravitational Waves and High-energy Neutrinos with Advanced LIGO during Its First Observing Run, ANTARES, and IceCube

Author: A. Albert, M. André, M. Anghinolfi, M. Ardid, J.-J. Aubert, J. Aublin, T. Avgitas, B. Baret, J. Barrios-Martí, S. Basa, B. Belhorma, V. Bertin, S. Biagi, R. Bormuth, J. Boumaaza, S. Bourret, M. C. Bouwhuis, H. Brânzaş, R. Bruijn, J. Brunner, J. Busto, A. Capone, L. Caramete, J. Carr, S. Celli, M. Chabab, R. Cherkaoui El Moursli, T. Chiarusi, M. Circella, J. A. B. Coelho, A. Coleiro, M. Colomer, R. Coniglione, H. Costantini, P. Coyle, A. Creusot, A. F. Díaz, A. Deschamps, C. Distefano, I. Di Palma, A. Domi, R. Donà, C. Donzaud, D. Dornic, D. Drouhin, T. Eberl, I. El Bojaddaini, N. El Khayati, D. Elsässer, A. Enzenhöfer, A. Ettahiri, F. Fassi, I. Felis, P. Fermani, G. Ferrara, L. Fusco, P. Gay, H. Glotin, T. Grégoire, R. Gracia Ruiz, K. Graf, S. Hallmann, H. van Haren, A. J. Heijboer, Y. Hello, J. J. Hernández-Rey, J. Hößl, J. Hofestädt, G. Illuminati, M. de Jong, M. Jongen, M. Kadler, O. Kalekin, U. Katz, N. R. Khan-Chowdhury, A. Kouchner, M. Kreter, I. Kreykenbohm, V. Kulikovskiy, C. Lachaud, R. Lahmann, D. Lefèvre, E. Leonora, G. Levi, M. Lotze, S. Loucatos, G. Maggi, M. Marcelin, A. Margiotta, A. Marinelli, J. A. Martínez-Mora, R. Mele, K. Melis, P. Migliozzi, A. Moussa, S. Navas, E. Nezri, A. Nuñez, M. Organokov, G. E. Păvălaş, C. Pellegrino, P. Piattelli, V. Popa, T. Pradier, L. Quinn, C. Racca, N. Randazzo, G. Riccobene, A. Sánchez-Losa, M. Saldaña, I. Salvadori, D. F. E. Samtleben, M. Sanguineti, P. Sapienza, F. Schüssler, M. Spurio, Th. Stolarczyk, M. Taiuti, Y. Tayalati, A. Trovato, B. Vallage, V. Van Elewyck, F. Versari, D. Vivolo, J. Wilms, D. Zaborov, J. D. Zornoza, J. Zúñiga, ANTARES collaboration, M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A. Barbano, J. P. Barron, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, J. Becker Tjus, K.-H. Becker, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, F. Bos, S. Böser, O. Botner, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, M. Brenzke, H.-P. Bretz, S. Bron, J. Brostean-Kaiser, A. Burgman, R. S. Busse, T. Carver, E. Cheung, D. Chirkin, K. Clark, L. Classen, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, M. Day, J. P. A. M. de André, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. Díaz-Vélez, V. di Lorenzo, H. Dujmovic, J. P. Dumm, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, P. A. Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, A. Franckowiak, E. Friedman, A. Fritz, T. K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, K. Ghorbani, W. Giang, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, P. Kalaczynski, W. Kang, A. Kappes, D. Kappesser, T. Karg, A. Karle, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, J. P. Koschinsky, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, S. Kunwar, N. Kurahashi, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, K. Leonard, M. Leuermann, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, J. Lünemann, W. Luszczak, J. Madsen, K. B. M. Mahn, Y. Makino, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, R. Maunu, K. Meagher, M. Medici, M. Meier, T. Menne, G. Merino, T. Meures, S. Miarecki, J. Micallef, G. Momenté, T. Montaruli, R. W. Moore, M. Moulai, R. Nagai, R. Nahnhauer, P. Nakarmi, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, E. O’Sullivan, T. Palczewski, H. Pandya, D. V. Pankova, P. Peiffer, J. A. Pepper, C. Pérez de los Heros, D. Pieloth, E. Pinat, A. Pizzuto, M. Plum, P. B. Price, G. T. Przybylski, C. Raab, M. Rameez, L. Rauch, K. Rawlins, I. C. Rea, R. Reimann, B. Relethford, G. Renzi, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, S. Schöneberg, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, J. Soedingrekso, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, A. Stasik, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, M. Sutherland, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, P. A. Toale, M. N. Tobin, C. Tönnis, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, B. Ty, E. Unger, M. A. Unland Elorrieta, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, F. D. Wandler, N. Wandkowsky, T. B. Watson, A. Waza, C. Weaver, M. J. Weiss, C. Wendt, J. Werthebach, S. Westerhoff, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood, E. Woolsey, K. Woschnagg, G. Wrede, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, T. Yuan, IceCube Collaboration, B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud, K. G. Arun, S. Ascenzi, G. Ashton, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. AultONeal, C. Austin, V. Avendano, A. Avila-Alvarez, S. Babak, P. Bacon, F. Badaracco, M. K. M. Bader, S. Bae, P. T. Baker, F. Baldaccini, G. Ballardin, S. W. Ballmer, S. Banagiri, J. C. Barayoga, S. E. Barclay, B. C. Barish, D. Barker, K. Barkett, S. Barnum, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, M. Bazzan, B. Bécsy, M. Bejger, I. Belahcene, A. S. Bell, D. Beniwal, B. K. Berger, G. Bergmann, S. Bernuzzi, J. J. Bero, C. P. L. Berry, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, J. Bidler, I. A. Bilenko, S. A. Bilgili, G. Billingsley, J. Birch, I. A. Birney, O. Birnholtz, S. Biscans, S. Biscoveanu, A. Bisht, M. Bitossi, M. A. Bizouard, J. K. Blackburn, C. D. Blair, D. G. Blair, R. M. Blair, S. Bloemen, N. Bode, M. Boer, Y. Boetzel, G. Bogaert, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, C. D. Booth, R. Bork, V. Boschi, S. Bose, K. Bossie, V. Bossilkov, J. Bosveld, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, M. Branchesi, J. E. Brau, T. Briant, J. H. Briggs, F. Brighenti, A. Brillet, M. Brinkmann, V. Brisson, P. Brockill, A. F. Brooks, D. D. Brown, S. Brunett, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, D. Buskulic, C. Buy, R. L. Byer, M. Cabero, L. Cadonati, G. Cagnoli, C. Cahillane, J. Calderón Bustillo, T. A. Callister, E. Calloni, J. B. Camp, W. A. Campbell, K. C. Cannon, H. Cao, J. Cao, E. Capocasa, F. Carbognani, S. Caride, M. F. Carney, G. Carullo, J. Casanueva Diaz, C. Casentini, S. Caudill, M. Cavaglià, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, G. Cerretani, E. Cesarini, O. Chaibi, K. Chakravarti, S. J. Chamberlin, M. Chan, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, B. D. Cheeseboro, H. Y. Chen, X. Chen, Y. Chen, H.-P. Cheng, C. K. Cheong, H. Y. Chia, A. Chincarini, A. Chiummo, G. Cho, H. S. Cho, M. Cho, N. Christensen, Q. Chu, S. Chua, K. W. Chung, S. Chung, G. Ciani, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, J. A. Clark, P. Clearwater, F. Cleva, C. Cocchieri, E. Coccia, P.-F. Cohadon, D. Cohen, R. Colgan, M. Colleoni, C. G. Collette, C. Collins, L. R. Cominsky, M. Constancio Jr., L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, K. R. Corley, N. Cornish, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M. W. Coughlin, S. B. Coughlin, J.-P. Coulon, S. T. Countryman, P. Couvares, P. B. Covas, E. E. Cowan, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D. E. Creighton, T. D. Creighton, J. Cripe, M. Croquette, S. G. Crowder, T. J. Cullen, A. Cumming, L. Cunningham, E. Cuoco, T. 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Fays, M. Fazio, C. Fee, J. Feicht, M. M. Fejer, F. Feng, A. Fernandez-Galiana, I. Ferrante, E. C. Ferreira, T. A. Ferreira, F. Ferrini, F. Fidecaro, I. Fiori, D. Fiorucci, M. Fishbach, R. P. Fisher, J. M. Fishner, M. Fitz-Axen, R. Flaminio, M. Fletcher, E. Flynn, H. Fong, J. A. Font, P. W. F. Forsyth, J.-D. Fournier, S. Frasca, F. Frasconi, Z. Frei, A. Freise, R. Frey, V. Frey, P. Fritschel, V. V. Frolov, P. Fulda, M. Fyffe, H. A. Gabbard, B. U. Gadre, S. M. Gaebel, J. R. Gair, L. Gammaitoni, M. R. Ganija, S. G. Gaonkar, A. Garcia, C. García-Quirós, F. Garufi, B. Gateley, S. Gaudio, G. Gaur, V. Gayathri, G. Gemme, E. Genin, A. Gennai, D. George, J. George, L. Gergely, V. Germain, S. Ghonge, Abhirup Ghosh, Archisman Ghosh, S. Ghosh, B. Giacomazzo, J. A. Giaime, K. D. Giardina, A. Giazotto, K. Gill, G. Giordano, L. Glover, P. Godwin, E. Goetz, R. Goetz, B. Goncharov, G. González, J. M. Gonzalez Castro, A. Gopakumar, M. L. Gorodetsky, S. E. Gossan, M. Gosselin, R. Gouaty, A. Grado, C. Graef, M. Granata, A. Grant, S. Gras, P. Grassia, C. Gray, R. Gray, G. Greco, A. C. Green, R. Green, E. M. Gretarsson, P. Groot, H. Grote, S. Grunewald, P. Gruning, G. M. Guidi, H. K. Gulati, Y. Guo, A. Gupta, M. K. Gupta, E. K. Gustafson, R. Gustafson, L. Haegel, O. Halim, B. R. Hall, E. D. Hall, E. Z. Hamilton, G. Hammond, M. Haney, M. M. Hanke, J. Hanks, C. Hanna, O. A. Hannuksela, J. Hanson, T. Hardwick, K. Haris, J. Harms, G. M. Harry, I. W. Harry, C.-J. Haster, K. Haughian, F. J. Hayes, J. Healy, A. Heidmann, M. C. Heintze, H. Heitmann, P. Hello, G. Hemming, M. Hendry, I. S. Heng, J. Hennig, A. W. Heptonstall, F. J. Hernandez, M. Heurs, S. Hild, T. Hinderer, D. Hoak, S. Hochheim, D. Hofman, A. M. Holgado, N. A. Holland, K. Holt, D. E. Holz, P. Hopkins, C. Horst, J. Hough, E. J. Howell, C. G. Hoy, A. Hreibi, E. A. Huerta, D. Huet, B. Hughey, M. Hulko, S. Husa, S. H. Huttner, T. Huynh-Dinh, B. Idzkowski, A. Iess, C. Ingram, R. Inta, G. Intini, B. Irwin, H. N. Isa, J.-M. Isac, M. Isi, B. R. Iyer, K. Izumi, T. Jacqmin, S. J. Jadhav, K. Jani, N. N. Janthalur, P. Jaranowski, A. C. Jenkins, J. Jiang, D. S. Johnson, A. W. Jones, D. I. Jones, R. Jones, R. J. G. Jonker, L. Ju, J. Junker, C. V. Kalaghatgi, V. Kalogera, B. Kamai, S. Kandhasamy, G. Kang, J. B. Kanner, S. J. Kapadia, S. Karki, K. S. Karvinen, R. Kashyap, M. Kasprzack, S. Katsanevas, E. Katsavounidis, W. Katzman, S. Kaufer, K. Kawabe, N. V. Keerthana, F. Kéfélian, D. Keitel, R. Kennedy, J. S. Key, F. Y. Khalili, H. Khan, I. Khan, S. Khan, Z. Khan, E. A. Khazanov, M. Khursheed, N. Kijbunchoo, Chunglee Kim, J. C. Kim, K. Kim, W. Kim, W. S. Kim, Y.-M. Kim, C. Kimball, E. J. King, P. J. King, M. Kinley-Hanlon, R. Kirchhoff, J. S. Kissel, L. Kleybolte, J. H. Klika, S. Klimenko, T. D. Knowles, P. Koch, S. M. Koehlenbeck, G. Koekoek, S. Koley, V. Kondrashov, A. Kontos, N. Koper, M. Korobko, W. Z. Korth, I. Kowalska, D. B. Kozak, V. Kringel, N. Krishnendu, A. Królak, G. Kuehn, A. Kumar, P. Kumar, R. Kumar, S. Kumar, L. Kuo, A. Kutynia, S. Kwang, B. D. Lackey, K. H. Lai, T. L. Lam, M. Landry, B. B. Lane, R. N. Lang, J. Lange, B. Lantz, R. K. Lanza, A. Lartaux-Vollard, P. D. Lasky, M. Laxen, A. Lazzarini, C. Lazzaro, P. Leaci, S. Leavey, Y. K. Lecoeuche, C. H. Lee, H. K. Lee, H. M. Lee, H. W. Lee, J. Lee, K. Lee, J. Lehmann, A. Lenon, N. Leroy, N. Letendre, Y. Levin, J. Li, K. J. L. Li, T. G. F. Li, X. Li, F. Lin, F. Linde, S. D. Linker, T. B. Littenberg, J. Liu, X. Liu, R. K. L. Lo, N. A. Lockerbie, L. T. London, A. Longo, M. Lorenzini, V. Loriette, M. Lormand, G. Losurdo, J. D. Lough, C. O. Lousto, G. Lovelace, M. E. Lower, H. Lück, D. Lumaca, A. P. Lundgren, R. Lynch, Y. Ma, R. Macas, S. Macfoy, M. MacInnis, D. M. Macleod, A. Macquet, F. Magaña-Sandoval, L. Magaña Zertuche, R. M. Magee, E. Majorana, I. Maksimovic, A. Malik, N. Man, V. Mandic, V. Mangano, G. L. Mansell, M. Manske, M. Mantovani, F. Marchesoni, F. Marion, S. Márka, Z. Márka, C. Markakis, A. S. Markosyan, A. Markowitz, E. Maros, A. Marquina, S. Marsat, F. Martelli, I. W. Martin, R. M. Martin, D. V. Martynov, K. Mason, E. Massera, A. Masserot, T. J. Massinger, M. Masso-Reid, S. Mastrogiovanni, A. Matas, F. Matichard, L. Matone, N. Mavalvala, N. Mazumder, J. J. McCann, R. McCarthy, D. E. McClelland, S. McCormick, L. McCuller, S. C. McGuire, J. McIver, D. J. McManus, T. McRae, S. T. McWilliams, D. Meacher, G. D. Meadors, M. Mehmet, A. K. Mehta, J. Meidam, A. Melatos, G. Mendell, R. A. Mercer, L. Mereni, E. L. Merilh, M. Merzougui, S. Meshkov, C. Messenger, C. Messick, R. Metzdorff, P. M. Meyers, H. Miao, C. Michel, H. Middleton, E. E. Mikhailov, L. Milano, A. L. Miller, A. Miller, M. Millhouse, J. C. Mills, M. C. Milovich-Goff, O. Minazzoli, Y. Minenkov, A. Mishkin, C. Mishra, T. Mistry, S. Mitra, V. P. Mitrofanov, G. Mitselmakher, R. Mittleman, G. Mo, D. Moffa, K. Mogushi, S. R. P. Mohapatra, M. Montani, C. J. Moore, D. Moraru, G. Moreno, S. Morisaki, B. Mours, C. M. Mow-Lowry, Arunava Mukherjee, D. Mukherjee, S. Mukherjee, N. Mukund, A. Mullavey, J. Munch, E. A. Muñiz, M. Muratore, P. G. Murray, I. Nardecchia, L. Naticchioni, R. K. Nayak, J. Neilson, G. Nelemans, T. J. N. Nelson, M. Nery, A. Neunzert, K. Y. Ng, S. Ng, P. Nguyen, D. Nichols, S. Nissanke, F. Nocera, C. North, L. K. Nuttall, M. Obergaulinger, J. Oberling, B. D. O’Brien, G. D. O’Dea, G. H. Ogin, J. J. Oh, S. H. Oh, F. Ohme, H. Ohta, M. A. Okada, M. Oliver, P. Oppermann, Richard J. Oram, B. O’Reilly, R. G. Ormiston, L. F. Ortega, R. O’Shaughnessy, S. Ossokine, D. J. Ottaway, H. Overmier, B. J. Owen, A. E. Pace, G. Pagano, M. A. Page, A. Pai, S. A. Pai, J. R. Palamos, O. Palashov, C. Palomba, A. Pal-Singh, Huang-Wei Pan, B. Pang, P. T. H. Pang, C. Pankow, F. Pannarale, B. C. Pant, F. Paoletti, A. Paoli, A. Parida, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, M. Patil, B. Patricelli, B. L. Pearlstone, C. Pedersen, M. Pedraza, R. Pedurand, A. Pele, S. Penn, C. J. Perez, A. Perreca, H. P. Pfeiffer, M. Phelps, K. S. Phukon, O. J. Piccinni, M. Pichot, F. Piergiovanni, G. Pillant, L. Pinard, M. Pirello, M. Pitkin, R. Poggiani, D. Y. T. Pong, S. Ponrathnam, P. Popolizio, E. K. Porter, J. Powell, A. K. Prajapati, J. Prasad, K. Prasai, R. Prasanna, G. Pratten, T. Prestegard, S. Privitera, G. A. Prodi, L. G. Prokhorov, O. Puncken, M. Punturo, P. Puppo, M. Pürrer, H. Qi, V. Quetschke, P. J. Quinonez, E. A. Quintero, R. Quitzow-James, F. J. Raab, H. Radkins, N. Radulescu, P. Raffai, S. Raja, C. Rajan, B. Rajbhandari, M. Rakhmanov, K. E. Ramirez, A. Ramos-Buades, Javed Rana, K. Rao, P. Rapagnani, V. Raymond, M. Razzano, J. Read, T. Regimbau, L. Rei, S. Reid, D. H. Reitze, W. Ren, F. Ricci, C. J. Richardson, J. W. Richardson, P. M. Ricker, K. Riles, M. Rizzo, N. A. Robertson, R. Robie, F. Robinet, A. Rocchi, L. Rolland, J. G. Rollins, V. J. Roma, M. Romanelli, R. Romano, C. L. Romel, J. H. Romie, K. Rose, D. Rosińska, S. G. Rosofsky, M. P. Ross, S. Rowan, A. Rüdiger, P. Ruggi, G. Rutins, K. Ryan, S. Sachdev, T. Sadecki, M. Sakellariadou, L. Salconi, M. Saleem, A. Samajdar, L. Sammut, E. J. Sanchez, L. E. Sanchez, N. Sanchis-Gual, V. Sandberg, J. R. Sanders, K. A. Santiago, N. Sarin, B. Sassolas, P. R. Saulson, O. Sauter, R. L. Savage, P. Schale, M. Scheel, J. Scheuer, F. Schiettekatte, P. Schmidt, R. Schnabel, R. M. S. Schofield, A. Schönbeck, E. Schreiber, B. W. Schulte, B. F. Schutz, S. G. Schwalbe, J. Scott, S. M. Scott, E. Seidel, D. Sellers, A. S. Sengupta, N. Sennett, D. Sentenac, V. Sequino, A. Sergeev, Y. Setyawati, D. A. Shaddock, T. Shaffer, M. S. Shahriar, M. B. Shaner, L. Shao, P. Sharma, P. Shawhan, H. Shen, R. Shink, D. H. Shoemaker, D. M. Shoemaker, S. ShyamSundar, K. Siellez, M. Sieniawska, D. Sigg, A. D. Silva, L. P. Singer, N. Singh, A. Singhal, A. M. Sintes, S. Sitmukhambetov, V. Skliris, B. J. J. Slagmolen, T. J. Slaven-Blair, J. R. Smith, R. J. E. Smith, S. Somala, E. J. Son, B. Sorazu, F. Sorrentino, T. Souradeep, E. Sowell, A. P. Spencer, A. K. Srivastava, V. Srivastava, K. Staats, C. Stachie, M. Standke, D. A. Steer, M. Steinke, J. Steinlechner, S. Steinlechner, D. Steinmeyer, S. P. Stevenson, D. Stocks, R. Stone, D. J. Stops, K. A. Strain, G. Stratta, S. E. Strigin, A. Strunk, R. Sturani, A. L. Stuver, V. Sudhir, T. Z. Summerscales, L. Sun, S. Sunil, J. Suresh, P. J. Sutton, B. L. Swinkels, M. J. Szczepańczyk, M. Tacca, S. C. Tait, C. Talbot, D. Talukder, D. B. Tanner, M. Tápai, A. Taracchini, J. D. Tasson, R. Taylor, F. Thies, M. Thomas, P. Thomas, S. R. Thondapu, K. A. Thorne, E. Thrane, Shubhanshu Tiwari, Srishti Tiwari, V. Tiwari, K. Toland, M. Tonelli, Z. Tornasi, A. Torres-Forné, C. I. Torrie, D. Töyrä, F. Travasso, G. Traylor, M. C. Tringali, L. Trozzo, R. Trudeau, K. W. Tsang, M. Tse, R. Tso, L. Tsukada, D. Tsuna, D. Tuyenbayev, K. Ueno, D. Ugolini, C. S. Unnikrishnan, A. L. Urban, S. A. Usman, H. Vahlbruch, G. Vajente, G. Valdes, N. van Bakel, M. van Beuzekom, J. F. J. van den Brand, C. Van Den Broeck, D. C. Vander-Hyde, L. van der Schaaf, J. V. van Heijningen, A. A. van Veggel, M. Vardaro, V. Varma, S. Vass, M. Vasúth, A. Vecchio, G. Vedovato, J. Veitch, P. J. Veitch, K. Venkateswara, G. Venugopalan, D. Verkindt, F. Vetrano, A. Viceré, A. D. Viets, D. J. Vine, J.-Y. Vinet, S. Vitale, T. Vo, H. Vocca, C. Vorvick, S. P. Vyatchanin, A. R. Wade, L. E. Wade, M. Wade, R. Walet, M. Walker, L. Wallace, S. Walsh, G. Wang, H. Wang, J. Z. Wang, W. H. Wang, Y. F. Wang, R. L. Ward, Z. A. Warden, J. Warner, M. Was, J. Watchi, B. Weaver, L.-W. Wei, M. Weinert, A. J. Weinstein, R. Weiss, F. Wellmann, L. Wen, E. K. Wessel, P. Weßels, J. W. Westhouse, K. Wette, J. T. Whelan, B. F. Whiting, C. Whittle, D. M. Wilken, D. Williams, A. R. Williamson, J. L. Willis, B. Willke, M. H. Wimmer, W. Winkler, C. C. Wipf, H. Wittel, G. Woan, J. Woehler, J. K. Wofford, J. Worden, J. L. Wright, D. S. Wu, D. M. Wysocki, L. Xiao, H. Yamamoto, C. C. Yancey, L. Yang, M. J. Yap, M. Yazback, D. W. Yeeles, Hang Yu, Haocun Yu, S. H. R. Yuen, M. Yvert, A. K. Zadrozny, A. Zadrożny, M. Zanolin, T. Zelenova, J.-P. Zendri, M. Zevin, J. Zhang, L. Zhang, T. Zhang, C. Zhao, M. Zhou, Z. Zhou, X. J. Zhu, M. E. Zucker, J. Zweizig, and The LIGO Scientific Collaboration and the Virgo Collaboration
Subjects: gravitational waves, neutrinos, Astrophysics, QB460-466
Abstract: Astrophysical sources of gravitational waves, such as binary neutron star and black hole mergers or core-collapse supernovae, can drive relativistic outflows, giving rise to non-thermal high-energy emission. High-energy neutrinos are signatures of such outflows. The detection of gravitational waves and high-energy neutrinos from common sources could help establish the connection between the dynamics of the progenitor and the properties of the outflow. We searched for associated emission of gravitational waves and high-energy neutrinos from astrophysical transients with minimal assumptions using data from Advanced LIGO from its first observing run O1, and data from the A ntares and IceCube neutrino observatories from the same time period. We focused on candidate events whose astrophysical origins could not be determined from a single messenger. We found no significant coincident candidate, which we used to constrain the rate density of astrophysical sources dependent on their gravitational-wave and neutrino emission processes.
Published: 2019
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19. A GEANT4 based simulation framework for the large area muon telescope of the GRAPES-3 experiment

Author: F. Varsi, S. Ahmad, M. Chakraborty, A. Chandra, S.R. Dugad, U.D. Goswami, S.K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, P. Jain, S. Kawakami, H. Kojima, S. Mahapatra, S. Mishra, P.K. Mohanty, R. Moharana, Y. Muraki, P.K. Nayak, T. Nonaka, A. Oshima, B.P. Pant, D. Pattanaik, A.K. Pradhan, G.S. Pradhan, M. Rameez, K. Ramesh, L.V. Reddy, S. Saha, R. Sahoo, R. Scaria, S. Shibata, and M. Zuberi
Subjects: Instrumentation, Mathematical Physics
Abstract: The GRAPES-3 experiment located in Ooty, India, samples the electron and muon components in extensive air showers using an array of plastic scintillator detectors and a muon telescope (G3MT) consisting of proportional counters to study the composition of primary cosmic rays (PCRs) as well as γ-ray sources in the TeV–PeV energy range. The G3MT is designed with an appropriate mass absorber to shield the electromagnetic and hadronic components in the shower and to detect muons above 1 GeV×sec(θ) energy, incident from a zenith angle θ. We developed a simulation framework based on the GEANT4 toolkit to evaluate the response of shower particles such as muons, γ-rays, electrons and hadrons in the G3MT. We discuss the geometric modeling of the G3MT using GEANT4 starting with the proportional counter. We estimated the punch-through contribution of hadrons in the G3MT. We compare the simulated muon multiplicity distributions with the observed ones assuming PCR composition from a four population supernova remnant acceleration model namely H4a.
Published: 2023

20. Comparison between public and private extension services for sugarcane production in Muzaffargarh District, Punjab, Pakistan

Author: Khawaja Muhammad Dawood, Ghazanfar Naeem, Muhammad Ali, Adnan Rayit, Muhammad, Badar Naseem Siddiqui, Khalid Masud, M. Rameez Akram Khan, Waqar-ul-Hassan Tareen, Muhammad Farooq, and Syed A. Shah
Subjects: Schedule (workplace), business.industry, Agriculture, Public sector, Structured interview, Commodity, Position (finance), Subsidy, Business, Private sector, Agricultural economics
Abstract: Sugarcane industry is at second position after textile industry in Pakistan. By the export of refined sugar, it plays a significant role in the economy of the country. Public and private sectors extension field staff work with sugarcane growers to improve their per acre yield. The research was conducted to compare and identify the services provided by those two sectors. A total of 150 respondents were selected randomly and interviewed to collect data through a structured interview schedule. The data were analyzed using Statistical Package of Social Sciences (SPSS). It was revealed that private sector provided commodity services such as improved sugarcane seed more than the public sector. However, public sector provided agriculture machinery on subsidized basis whereas private sector did not have any of such facility but was ahead in providing the advocacy services, arranging trainings/workshops, paying farm/home visits, organizing method demonstrations and arranging agricultural fares (Kissan Mellas) for farmers due to better funding. However, Agri. Helpline calls system of public sector was found more effective. Key words: Extension services, sugarcane, extension field staff (EFS), public sector and private sector.
Published: 2020

21. Search for High-energy Neutrino Emission from Galactic X-Ray Binaries with IceCube

Author: R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, J. M. Alameddine, A. A. Alves, N. M. Amin, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Y. Ashida, S. Axani, X. Bai, A. Balagopal V., S. W. Barwick, B. Bastian, V. Basu, S. Baur, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, J. Beise, C. Bellenghi, S. Benda, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, M. Boddenberg, F. Bontempo, J. Borowka, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, F. Bradascio, J. Braun, B. Brinson, S. Bron, J. Brostean-Kaiser, S. Browne, A. Burgman, R. T. Burley, R. S. Busse, M. A. Campana, E. G. Carnie-Bronca, C. Chen, Z. Chen, D. Chirkin, K. Choi, B. A. Clark, K. Clark, L. Classen, A. Coleman, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, C. Dappen, P. Dave, C. De Clercq, J. J. DeLaunay, D. Delgado López, H. Dembinski, K. Deoskar, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, M. Dittmer, H. Dujmovic, M. Dunkman, M. A. DuVernois, T. Ehrhardt, P. Eller, R. Engel, H. Erpenbeck, J. Evans, P. A. Evenson, K. L. Fan, A. R. Fazely, A. Fedynitch, N. Feigl, S. Fiedlschuster, A. T. Fienberg, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, A. Garcia, S. Garrappa, L. Gerhardt, A. Ghadimi, C. Glaser, T. Glauch, T. Glüsenkamp, J. G. Gonzalez, S. Goswami, D. Grant, T. Grégoire, S. Griswold, C. Günther, P. Gutjahr, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, M. Ha Minh, K. Hanson, J. Hardin, A. A. Harnisch, A. Haungs, D. Hebecker, K. Helbing, F. Henningsen, E. C. Hettinger, S. Hickford, J. Hignight, C. Hill, G. C. Hill, K. D. Hoffman, R. Hoffmann, K. Hoshina, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, K. Hymon, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, M. Jin, B. J. P. Jones, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, L. Kardum, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, M. Kellermann, J. L. Kelley, A. Kheirandish, K. Kin, T. Kintscher, J. Kiryluk, S. R. Klein, A. Kochocki, R. Koirala, H. Kolanoski, T. Kontrimas, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, T. Kozynets, E. Krupczak, E. Kun, N. Kurahashi, N. Lad, C. Lagunas Gualda, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, J. W. Lee, K. Leonard, A. Leszczyńska, Y. Li, M. Lincetto, Q. R. Liu, M. Liubarska, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, S. Mancina, I. C. Mariş, I. Martinez-Soler, R. Maruyama, S. McCarthy, T. McElroy, F. McNally, J. V. Mead, K. Meagher, S. Mechbal, A. Medina, M. Meier, S. Meighen-Berger, J. Micallef, D. Mockler, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, R. Naab, R. Nagai, U. Naumann, J. Necker, L. V. Nguyễn, H. Niederhausen, M. U. Nisa, S. C. Nowicki, A. Obertacke Pollmann, M. Oehler, B. Oeyen, A. Olivas, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, L. Paul, C. Pérez de los Heros, L. Peters, J. Peterson, S. Philippen, S. Pieper, M. Pittermann, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, B. Pries, G. T. Przybylski, C. Raab, J. Rack-Helleis, A. Raissi, M. Rameez, K. Rawlins, I. C. Rea, Z. Rechav, A. Rehman, P. Reichherzer, R. Reimann, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, E. J. Roberts, S. Robertson, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, J. Saffer, S. E. Sanchez Herrera, A. Sandrock, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, H. Schieler, S. Schindler, T. Schmidt, A. Schneider, J. Schneider, F. G. Schröder, L. Schumacher, G. Schwefer, S. Sclafani, D. Seckel, S. Seunarine, A. Sharma, S. Shefali, N. Shimizu, M. Silva, B. Skrzypek, B. Smithers, R. Snihur, J. Soedingrekso, D. Soldin, C. Spannfellner, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, J. Stettner, T. Stezelberger, T. Stürwald, T. Stuttard, G. W. Sullivan, I. Taboada, S. Ter-Antonyan, J. Thwaites, S. Tilav, F. Tischbein, K. Tollefson, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, J. P. Twagirayezu, B. Ty, M. A. Unland Elorrieta, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, J. Veitch-Michaelis, S. Verpoest, C. Walck, W. Wang, T. B. Watson, C. Weaver, P. Weigel, A. Weindl, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, N. Whitehorn, C. H. Wiebusch, N. Willey, D. R. Williams, M. Wolf, G. Wrede, J. Wulff, X. W. Xu, J. P. Yanez, E. Yildizci, S. Yoshida, S. Yu, T. Yuan, Z. Zhang, P. Zhelnin, Vriendenkring VUB, Elementary Particle Physics, and Physics
Subjects: interaction [cosmic radiation], pole, 330, High-Energy Phenomena and Fundamental Physics, cosmic radiation: interaction, neutrino: flux, MICROQUASAR, IceCube, Subatomär fysik, star, Astronomi, astrofysik och kosmologi, Subatomic Physics, site, ABSORPTION, Astronomy, Astrophysics and Cosmology, binary [X-ray], detector [neutrino], neutrino: potential, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, CATALOG, ddc, neutrino: detector, LIGHT, acceleration [cosmic radiation], X-ray: binary, Astrophysics - High Energy Astrophysical Phenomena, FLUX, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, gas, quasar, ddc:530, cosmic radiation: acceleration, Astrophysics::Galaxy Astrophysics, ANTARES, CONSTRAINTS, Astronomy and Astrophysics, flux [neutrino], sensitivity, GALAXY, Physics and Astronomy, Space and Planetary Science, atmosphere, JETS, ddc:520, time dependence, galaxy, potential [neutrino]
Abstract: The astrophysical journal / 2 930, L24 (2022). doi:10.3847/2041-8213/ac67d8, We present the first comprehensive search for high-energy neutrino emission from high- and low-mass X-ray binaries conducted by IceCube. Galactic X-ray binaries are long-standing candidates for the source of Galactic hadronic cosmic rays and neutrinos. The compact object in these systems can be the site of cosmic-ray acceleration, and neutrinos can be produced by interactions of cosmic rays with radiation or gas, in the jet of a microquasar, in the stellar wind, or in the atmosphere of the companion star. We study X-ray binaries using 7.5 yr of IceCube data with three separate analyses. In the first, we search for periodic neutrino emission from 55 binaries in the Northern Sky with known orbital periods. In the second, the X-ray light curves of 102 binaries across the entire sky are used as templates to search for time-dependent neutrino emission. Finally, we search for time-integrated emission of neutrinos for a list of 4 notable binaries identified as microquasars. In the absence of a significant excess, we place upper limits on the neutrino flux for each hypothesis and compare our results with theoretical predictions for several binaries. In addition, we evaluate the sensitivity of the next generation neutrino telescope at the South Pole, IceCube-Gen2, and demonstrate its power to identify potential neutrino emission from these binary sources in the Galaxy., Published by Institute of Physics Publ., London
Published: 2022

22. Probing Solar Storms with Grapes-3 Scintillator Detectors

Author: B. Hariharan, M. Chakraborty, S.R. Dugad, S.K. Gupta, Y. Hayashi, P. Jagadeesan, A. Jain, S. Kawakami, H. Kojima, S. Mahapatra, P.K. Mohanty, Y. Muraki, P.K. Nayak, T. Nonaka, A. Oshima, D. Pattanaik, M. Rameez, K. Ramesh, L.V. Reddy, S. Shibata, and M. Zuberi
Subjects: Atmospheric Science, History, Geophysics, Polymers and Plastics, Space and Planetary Science, Business and International Management, Industrial and Manufacturing Engineering
Published: 2022

23. Self-referencing optrodes for measuring spatially resolved, real-time metabolic oxygen flux in plant systems

Author: McLamore, Eric S., Jaroch, David, Chatni, M. Rameez, and Porterfield, D. Marshall
Published: 2010

24. Highlights from the GRAPES-3 experiment

Author: Pravata Mohanty, S. Ahmad, M. Chakraborty, A. Chandra, S.R Dugad, U.D Goswami, S.K Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, Y. Muraki, P.K Nayak, T. Nonaka, A. Oshima, B.P Pant, D. Pattanaik, G.S Pradhan, P.S Rakshe, M. Rameez, K. Ramesh, L.V Reddy, R. Sahoo, R. Scaria, S. Shibata, J. Soni, K. Tanaka, F. Varsid, and M. Zuberia
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Cosmic ray, Scintillator, GRAPES-3, law.invention, Nuclear physics, Telescope, Air shower, law, High Energy Physics::Experiment, Angular resolution
Abstract: The GRAPES-3 is a near-equatorial extensive air shower experiment, located in Ooty, India at an altitude of 2200 m above mean sea level. It consists of a dense array of 400 scintillator detectors of 1 m$^{2}$ area each with 8 m inter separation. The array triggers showers induced by cosmic ray and gamma ray primaries in the TeV-PeV energy range. An associated muon telescope of 560 m$^2$ area is designed to record muons above 1 GeV energy in the triggered showers. Additionally, it is designed to trigger on individual muons, providing measurement of muon flux with a statistics of $\sim$4$\times$10$^{9}$ muons per day and an average angular resolution of 4$^{\circ}$. In this paper, we summarize the recent results obtained using air shower data on cosmic ray energy spectrum and composition below the Knee, cosmic ray anisotropy, angular resolution, gamma ray source searches and thunderstorm phenomena using the muon flux data.
Published: 2021

25. An extensive study for correcting the nonlinear particle density measured by GRAPES-3 scintillator detectors

Author: L.V. Reddy, F. Varsi, G.S. Pradhan, Yasushi Muraki, S. R. Dugad, M. Rameez, M. Chakraborty, B.P. Pant, Toshiyuki Nonaka, Pankaj Jain, K. Tanaka, K. Ramesh, R. Scaria, S. Mahapatra, Anuj Chandra, Shafiq Ahmad, Y. Hayashi, Akitoshi Oshima, P.S. Rakshe, S.K. Gupta, S. Kawakami, Balakrishnan Hariharan, R. Sahoo, P. Jagadeesan, D. Pattanaik, Hiroshi Kojima, Umananda Dev Goswami, Prakash Kumar Nayak, R. Moharana, P. K. Mohanty, M. Zuberi, A. Jain, and Shoichi Shibata
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Scintillator, GRAPES-3, law.invention, Telescope, Air shower, Optics, law, Particle, High Energy Physics::Experiment, business
Abstract: The GRAPES-3 extensive air shower (EAS) array located at Ooty is equipped with 400 plastic scintillator detectors spread over an area of 25000 m$^2$ and a muon telescope of area 560 m$^2$ built with 3,712 proportional counters. One of its principal objectives is to measure the primary cosmic ray energy spectrum in the TeV-PeV energy region. The response of the photo-multiplier tubes (PMTs) used in the plastic scintillator detectors becomes nonlinear at densities $>$ 50 particles per m$^2$ in large EAS. We describe a technique to correct for the nonlinearity of these PMTs, thereby extending the dynamic range of the detector for observed particle densities up to 5000 particles per m$^2$. The details of the technique will be presented.
Published: 2021

26. Characterizing the isotropic diffuse gamma-ray flux (10-300 TeV) by the GRAPES-3 experiment

Author: G.S. Pradhan, S. Mahapatra, S. Kawakami, S. K. Gupta, P. Jagadeesan, F. Varsi, R. Sahoo, L.V. Reddy, P. K. Jain, D. Pattanaik, Akitoshi Oshima, A. Jain, P.S. Rakshe, Shafiq Ahmad, K. Tanaka, Toshiyuki Nonaka, Hiroshi Kojima, K. Ramesh, R. Scaria, J. Soni, Bhanu Pant, Anuj Chandra, M. Rameez, S. R. Dugad, R. Moharana, Prakash Kumar Nayak, Balakrishnan Hariharan, M. Chakraborty, P. K. Mohanty, Yasushi Muraki, Umananda Dev Goswami, M. Zuberi, Shoichi Shibata, and Y. Hayashi
Subjects: Physics, Muon, Astrophysics::High Energy Astrophysical Phenomena, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Radiation, GRAPES-3, law.invention, Telescope, Air shower, law, High Energy Physics::Experiment
Abstract: A diffuse gamma-ray emission at $\sim$100 TeV can be expected as a result of the interactions of ultra-high-energy cosmic rays (UHECRs) with the cosmic microwave background (CMB) during their propagation. This radiation carries the information on the distribution of energetic sources and hence the cosmological evolution of the universe. The GRAPES-3 is an extensive air shower (EAS) array, located at Ooty in southern India. It consists of 400 plastic scintillators (each 1 m$^2$) and a large area (560 m$^2$) muon telescope. The muon telescope has the ability to differentiate the gamma-rays from charged cosmic rays through their muon content. We report on the study of isotropic diffuse gamma-ray flux from GRAPES-3 over 10-300 TeV.
Published: 2021

27. Vetoing the high energy showers in the GRAPES-3 experiment whose cores lie outside the array

Author: S. Mahapatra, S.K. Gupta, K. Ramesh, J. Soni, M. Rameez, Umananda Dev Goswami, B.P. Pant, P.S. Rakshe, M. Zuberi, Shoichi Shibata, R. Scaria, P. K. Mohanty, K. Tanaka, Toshiyuki Nonaka, G.S. Pradhan, R. Moharana, Hiroshi Kojima, A. Jain, F. Varsi, Prakash Kumar Nayak, R. Sahoo, S. R. Dugad, M. Chakraborty, D. Pattanaik, Shafiq Ahmad, S. Kawakami, L.V. Reddy, Akitoshi Oshima, Balakrishnan Hariharan, Yasushi Muraki, Pankaj Jain, Y. Hayashi, P. Jagadeesan, and Anuj Chandra
Subjects: Physics, Range (particle radiation), Muon, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Astrophysics, Scintillator, GRAPES-3, law.invention, Atmosphere, Telescope, law, Energy (signal processing)
Abstract: The GRAPES-3 experiment located in Ooty consists of an array of 400 plastic scintillator detectors spread over an area of 25000𝑚 2 and a large area (560 𝑚 2 ) muon telescope. Every day, the array records about 3 million showers induced by the interaction of primary cosmic rays in the atmosphere. One of the primary objectives of the experiment is to measure the energy spectrum and composition of the cosmic rays in the TeV-PeV energy range. However, some of the detected showers have cores outside the array. This fraction increases with energy due to the higher lateral spread of shower particles at higher energies. Identifying these events is thus crucial for accurate measurement of the cosmic ray energy spectrum. This work will describe simple cut based as well as machine learning based strategies for identifying and excluding such events and their impact on the cosmic ray energy spectrum as measured by the Bayesian unfolding technique.
Published: 2021

28. Cosmic ray energy spectrum and composition measurements from the GRAPES-3 experiment: Latest results

Author: K. Ramesh, P. Jagadeesan, P.S. Rakshe, S. Mahapatra, Yasushi Muraki, M. Zuberi, J. Soni, Y. Hayashi, Pankaj Jain, D. Pattanaik, Umananda Dev Goswami, F. Varsi, S. Kawakami, R. Sahoo, M. Rameez, A. Jain, Toshiyuki Nonaka, Anuj Chandra, Shoichi Shibata, Balakrishnan Hariharan, Shafiq Ahmad, B.P. Pant, P. K. Mohanty, R. Moharana, L.V. Reddy, R. Scaria, S. R. Dugad, M. Chakraborty, Akitoshi Oshima, K. Tanaka, S.K. Gupta, G.S. Pradhan, Hiroshi Kojima, and Prakash Kumar Nayak
Subjects: Physics, Muon, Proton, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Gamma-ray astronomy, GRAPES-3, law.invention, Telescope, Nuclear physics, Air shower, Distribution function, law, High Energy Physics::Experiment
Abstract: The Gamma Ray Astronomy at PeV EnergieS phase-3 (GRAPES-3) experiment is located at Ooty in India (11.4$^{\circ}$ N, 76.7$^{\circ}$ E and 2200 m above m.s.l.). It consists of a densely packed array of 400 plastic scintillator detectors and a large area muon telescope (560 m$^{2}$). It measures cosmic rays from several TeV to over 10 PeV energies providing a substantial overlap with direct experiments while covering the knee region. Shower parameters are reconstructed by fitting the observed particle densities with the NKG lateral distribution function (LDF). For this analysis, the QGSJET-II-04 hadronic interaction model is used to generate the air shower simulation data for proton, helium, nitrogen, aluminium, and iron primaries. Precise measurements of the average nuclear composition are obtained by fitting muon multiplicity distributions (MMDs) for all simulated primaries with the MMDs measured by the muon telescope. Details of the analysis and preliminary results for the extracted composition and elemental energy spectrum for proton and helium from a few tens of TeV to a few PeV will be presented.
Published: 2021

29. Large-scale cosmic ray anisotropy measured by the GRAPES-3 experiment

Author: S. Mahapatra, Toshiyuki Nonaka, A. Jain, L.V. Reddy, P. K. Mohanty, S. K. Gupta, M. Zuberi, Yasushi Muraki, Y. Hayashi, Hiroshi Kojima, K. Ramesh, F. Varsi, R. Scaria, K. Tanaka, S. R. Dugad, Umananda Dev Goswami, Akitoshi Oshima, Prakash Kumar Nayak, S. Kawakami, M. Rameez, Anuj Chandra, M. Chakraborty, P. K. Jain, Balakrishnan Hariharan, P.S. Rakshe, G.S. Pradhan, Shafiq Ahmad, P. Jagadeesan, J. Soni, D. Pattanaik, B.P. Pant, R. Sahoo, Shoichi Shibata, and R. Moharana
Subjects: Physics, Range (particle radiation), Astrophysics::High Energy Astrophysical Phenomena, Isotropy, Flux, Cosmic ray, Celestial sphere, Anisotropy, GRAPES-3, Computational physics, Magnetic field
Abstract: The deflection of cosmic rays (CRs) in the interstellar magnetic field results in an almost isotropic flux as observed on Earth. However, an anisotropy has been observed at the level of ∼ 10^{-4} − 10^{-3}. The GRAPES-3 experiment located at Ooty, India consists of an array of 400 plastic scintillator detectors. It measures the particle densities and their relative arrival times in extensive air showers produced by the CRs. This information collected is then reconstructed to obtain the energy and direction of the primary CRs. The near-equatorial location of GRAPES-3 provides an opportunity to study this anisotropy in both hemispheres of the celestial sphere in the TeV-PeV energy range. However, detector and atmospheric effects that induce a few per cent change in the primary CR flux are challenges to be addressed. This work describes the use of the time scrambling method to address some these systematics and observe anisotropy.
Published: 2021

30. Measurement of the improved angular resolution of GRAPES-3 EAS array by the observation of the Moon shadow

Author: Y. Hayashi, R. Moharana, L.V. Reddy, M. Rameez, Shoichi Shibata, P. K. Mohanty, F. Varsi, J. Soni, R. Scaria, R. Sahoo, Yasushi Muraki, S.K. Gupta, Umananda Dev Goswami, Pankaj Jain, Akitoshi Oshima, M. Zuberi, S. Kawakami, S. Mahapatra, A. Jain, Hiroshi Kojima, Shafiq Ahmad, Prakash Kumar Nayak, D. Pattanaik, K. Tanaka, Toshiyuki Nonaka, Anuj Chandra, S. R. Dugad, M. Chakraborty, G.S. Pradhan, P.S. Rakshe, P. Jagadeesan, Balakrishnan Hariharan, K. Ramesh, and B.P. Pant
Subjects: Physics, Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, Flux, Cosmic ray, Scintillator, GRAPES-3, Air shower, Optics, Shadow, Angular resolution, business
Abstract: The Moon acts as a shield against the cosmic rays, preventing them from reaching the earth, which gives rise to a deficit in the flux along the direction of the Moon. The observed deficit can be used for obtaining the absolute calibration of the angular resolution and to verify the pointing accuracy of the array. GRAPES-3 is an extensive air shower experiment located at Ooty, India consisting of a dense array of scintillator detectors. It records $\sim$$10^9$ showers per year with a median energy of 10 TeV. With the precise determination of the arrival time of shower particles and an accurate correction for the shower front curvature, a major improvement in the angular resolution of the array has been achieved. This was done by the array division methods including the left-right and even-odd methods. Here, we present a verification of the angular resolution estimates and the pointing accuracy by observing shadow of the Moon in the cosmic ray flux.
Published: 2021

31. Search for gamma rays above 30 TeV from the Crab Nebula with the GRAPES-3 experiment

Author: S. Mahapatra, S.K. Gupta, R. Scaria, G.S. Pradhan, K. Ramesh, Pankaj Jain, S. Kawakami, Anuj Chandra, P. Jagadeesan, Hiroshi Kojima, J. Soni, Shafiq Ahmad, Akitoshi Oshima, Prakash Kumar Nayak, F. Varsi, P.S. Rakshe, R. Moharana, D. Pattanaik, K. Tanaka, A. Jain, Shoichi Shibata, Umananda Dev Goswami, R. Sahoo, Y. Hayashi, M. Rameez, M. Zuberi, P. K. Mohanty, Toshiyuki Nonaka, Balakrishnan Hariharan, L.V. Reddy, B.P. Pant, Yasushi Muraki, S. R. Dugad, and M. Chakraborty
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Cosmic ray, Astrophysics, GRAPES-3, law.invention, Telescope, Air shower, Crab Nebula, law, High Energy Physics::Experiment, Angular resolution
Abstract: The GRAPES-3 is a high-altitude, near-equator extensive air shower array at Ooty, India which is designed to observe cosmic and gamma-rays in TeV-PeV energy range. It consists of a dense array of 400 scintillator detectors operating in conjunction with a 560 $m^2$ area muon telescope. Due to recent improvements in the measurements of shower arrival time and corrections for shower front curvature based on shower size and age, the angular resolution of the array has been significantly improved. By leveraging the resultant improved angular resolution and an efficient rejection of the cosmic ray background using the muon content of the shower, a search for gamma-rays above 30 TeV from the Crab Nebula has been performed. The results will be presented during the conference.
Published: 2021

32. The azimuthal distribution of thunderstorm events recorded by the GRAPES-3 experiment

Author: B.P. Pant, Yasushi Muraki, M. Rameez, Akitoshi Oshima, F. Varsi, Y. Hayashi, Balakrishnan Hariharan, Umananda Dev Goswami, S. R. Dugad, D. Pattanaik, G.S. Pradhan, M. Chakraborty, R. Moharana, P. K. Mohanty, Anuj Chandra, L.V. Reddy, Hiroshi Kojima, Pankaj Jain, Prakash Kumar Nayak, Toshiyuki Nonaka, J. Soni, K. Tanaka, A. Jain, Shoichi Shibata, R. Sahoo, M. Zuberi, R. Scaria, P.S. Rakshe, K. Ramesh, P. Jagadeesan, S. Mahapatra, S.K. Gupta, S. Kawakami, and Shafiq Ahmad
Subjects: Azimuth, Nuclear physics, Physics, Depth sounding, business.product_category, Muon, Rocket, Monte Carlo method, Thunderstorm, Electric potential, business, GRAPES-3, Physics::Geophysics
Abstract: The GRAPES-3 experiment reported the measurement of 1.3 GV potential across one of the massive thunderclouds recorded on 1 December 2014 by making use of the muon imaging technique. This measurement is ten times larger than the maximum potential reported previously by balloon and rocket sounding measurements, verifying the almost a century old prediction by C.T.R. Wilson. These measurements rely on the precise estimate of the change in the angular muon flux caused by the acceleration of muons during their passage through the charged layers of thunderstorms. The electric potential is estimated with the help of Monte Carlo simulations by using CORSIKA and other in-house tools. A study of the thunderstorms events recorded since April 2011 displays an asymmetry in their azimuthal distribution which can be understood to be caused by the ratio of $\mu^+$/$\mu^-$.
Published: 2021

33. An Advanced Triggerless Data Acquisition System for GRAPES-3 Muon Detector

Author: F. Varsi, Yasushi Muraki, S. Mahapatra, G.S. Pradhan, J. Soni, K. Manjunath, Hiroshi Kojima, V. Lindenstruth, Umananda Dev Goswami, P. K. Mohanty, Prakash Kumar Nayak, P. K. Jain, Anuj Chandra, D. Pattanaik, R. Sahoo, S. R. Dugad, S. Kawakami, Balakrishnan Hariharan, K. Ramesh, Y. Hayashi, Akitoshi Oshima, M. Chakraborty, R. Moharana, L.V. Reddy, R. Sureshkumar, S. K. Gupta, Shafiq Ahmad, R. Scaria, M. Zuberi, Shoichi Shibata, P.S. Rakshe, K. Tanaka, T. Alt, P. Jagadeesan, Jain Ak, Toshiyuki Nonaka, M.S. Shareef, B.P. Pant, and M. Rameez
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Flux, Cosmic ray, Gamma-ray astronomy, GRAPES-3, law.invention, Nuclear physics, Telescope, Data acquisition, law, Transient (oscillation)
Abstract: The large area 560\,m$^2$ directional muon telescope at Gamma Ray Astronomy at PeV Energies phase -3 (GRAPES-3) experiment in Ooty, India was designed primarily to study the extensive air showers (EAS) and made operational in year 1998. It has turned out to be an unique instrument to make fascinating study of exotic phenomenon by introduction of a new parallel data acquisition system (DAQ) in year 2000 to measure the muon directional flux. The recent discoveries of transient weakening of Earth’s magnetic shield probed by a Cosmic Ray Burst and measurement of the electrical properties of a thundercloud through muon imaging has demonstrated the capabilities of this instrument. The design of new triggerless muon data acquisition system (TM-DAQ) using Field-programmable gate array (FPGA) would enhance the present capabilities and open a new window on several physics fronts such as, a) precise measurement of the muon flux for thunderstorm studies, b) study of large angle EAS using the muon component, c) search for exotic particles characterized by early or delayed arrivals. We present here the key salient features of the TM-DAQ along with initial observations.
Published: 2021

34. Measurement of large angle muon flux in GRAPES-3 experiment using triggerless DAQ system

Author: D. Pattanaik, Umananda Dev Goswami, Shafiq Ahmad, R. Moharana, R. Sureshkumar, K. Ramesh, M. Rameez, Hiroshi Kojima, P. K. Mohanty, R. Sahoo, J. Soni, Prakash Kumar Nayak, K. Manjunath, S. Kawakami, V. Lindenstruth, S.K. Gupta, G.S. Pradhan, P.S. Rakshe, Pankaj Jain, A. Jain, S. Mahapatra, Balakrishnan Hariharan, T. Alt, R. Scaria, Shoichi Shibata, S. R. Dugad, K. Tanaka, P. Jagadeesan, Akitoshi Oshima, M. Chakraborty, L.V. Reddy, Anuj Chandra, Yasushi Muraki, M. Zuberi, M.S. Shareef, B.P. Pant, Toshiyuki Nonaka, Y. Hayashi, and F. Varsi
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, business.industry, Process (computing), Flux, GRAPES-3, law.invention, Nuclear physics, Telescope, Software, Data acquisition, law, High Energy Physics::Experiment, business, Zenith
Abstract: The large area muon telescope of GRAPES-3 has been operating continuously for more than two decades with a DAQ which has several limitations. At present, this DAQ is in the process of being upgraded with a FPGA based system. The new DAQ system is designed to be triggerless and capable of recording every hit from the 3712 proportional counters along with a time-stamp (10 ns accuracy) which has significantly expanded the physics horizon of the experiment. This triggerless feature allows the detection of muons beyond the nominal zenith range of the current system ($\theta$$
Published: 2021

35. Zenith angle dependence of pressure effect in GRAPES-3 muon telescope

Author: Toshiyuki Nonaka, K. Tanaka, R. Scaria, S. Mahapatra, M. Zuberi, S. R. Dugad, P. K. Mohanty, A. Jain, Anuj Chandra, F. Varsi, R. Sahoo, M. Chakraborty, Hiroshi Kojima, Umananda Dev Goswami, Prakash Kumar Nayak, Y. Hayashi, Shoichi Shibata, D. Pattanaik, B.P. Pant, Shafiq Ahmad, S.K. Gupta, S. Kawakami, R. Moharana, G.S. Pradhan, Pankaj Jain, P. Jagadeesan, Yasushi Muraki, Balakrishnan Hariharan, K. Ramesh, L.V. Reddy, P.S. Rakshe, Akitoshi Oshima, and M. Rameez
Subjects: Physics, Telescope, Muon, Atmospheric pressure, law, High Energy Physics::Experiment, Field of view, Threshold energy, GRAPES-3, Zenith, Intensity (heat transfer), law.invention, Computational physics
Abstract: A large area (560 m^2) muon telescope in the GRAPES-3 experiment at Ooty, India records muon intensity at high cutoff rigidities (Rc) varies from 14–32 GV along 169 independent directions spanning a field of view of 2.3 sr. The threshold energy of the recorded muons is sec(theta) GeV along a direction with a zenith angle (theta) and with the average angular accuracy of∼4 degrees. The directional capabilities of the muon telescope are exploited for studying the effect of atmospheric pressure on the muon flux as a function of Rc. It is observed that the barometric coefficient relationship with logarithmic Rc can be well described by a second order polynomial function with a high Spearman Rank correlation coefficient of 0.99
Published: 2021

36. A study of the Moon shadow by using GRAPES-3 muon telescope

Author: Yasushi Muraki, S. Mahapatra, P.S. Rakshe, Toshiyuki Nonaka, D. Pattanaik, B.P. Pant, Pankaj Jain, S. R. Dugad, G.S. Pradhan, S. Kawakami, Y. Hayashi, M. Chakraborty, A. Jain, Akitoshi Oshima, P. Jagadeesan, P. K. Mohanty, R. Sahoo, Shafiq Ahmad, M. Zuberi, K. Tanaka, R. Scaria, Balakrishnan Hariharan, L.V. Reddy, K. Ramesh, Umananda Dev Goswami, M. Rameez, R. Moharana, Hiroshi Kojima, F. Varsi, Prakash Kumar Nayak, Shoichi Shibata, S.K. Gupta, and Anuj Chandra
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Scintillator, GRAPES-3, law.invention, Telescope, Data acquisition, law, Shadow, Physics::Accelerator Physics, High Energy Physics::Experiment, Angular resolution, Remote sensing
Abstract: The GRAPES-3 experiment is designed to perform precision studies of gamma-ray sources in the TeV-PeV energy region. It consists of 400 plastic scintillator detectors spanning an effective area of 25000 m^2 and a large area (560 m^2) muon telescope which records ∼4 x 10^9 muons every day. With the recent installation of an improved triggerless data acquisition (DAQ) system, the information related to every muon is recorded with a timing resolution of 10 ns. The angular resolution and pointing accuracy of the upgraded muon telescope has been validated by characterizing the shadow of the moon among recorded muons. Here, the details of the analysis and results, as well as the simulation studies to account for the deflection of the particles in the Earth’s magnetic field will be presented.
Published: 2021

37. A Convolutional Neural Network based Cascade Reconstruction for the IceCube Neutrino Observatory

Author: J. Werthebach, A. Franckowiak, Chujie Chen, Ioana Codrina Maris, K. Hoshina, A. Steuer, A. Weindl, Maryon Ahrens, P. Schlunder, Saskia Philippen, Glenn Spiczak, G. Momenté, Segev BenZvi, Spencer Klein, M. Rameez, Sam De Ridder, Frederik Tenholt, R. Nagai, D. F. Cowen, Martin Unland Elorrieta, Stephen L. Hauser, Christoph Raab, Nadège Iovine, Barbara Skrzypek, Kara Hoffman, Sarah Mancina, N. van Eijndhoven, U. Naumann, Raamis Hussain, D. Berley, G. C. Hill, Tobias Hoinka, Vedant Basu, Steve Sclafani, J. Kiryluk, B. J. P. Jones, Andres Medina, D. Mockler, Bunheng Ty, Ralph Engel, Moritz Kellermann, U. Katz, Emily Dvorak, Timo Karg, K. Andeen, D. R. Nygren, Marek Kowalski, D. Kang, Giovanni Renzi, K. D. de Vries, M. Stamatikos, Hershal Pandya, Wolfgang Rhode, Robert Stein, A.A. Alves, Pablo Correa, D. Seckel, S. Fahey, Javier Gonzalez, Roxanne Turcotte, Maximilian Karl Scharf, Alexander Trettin, P. B. Price, I. Taboada, Gisela Anton, Michael O. Wolf, Lenka Tomankova, Max Renschler, Y. Makino, Matthias Vraeghe, Tyce DeYoung, K. Tollefson, D. J. Koskinen, K. Rawlins, Nathan Whitehorn, C. Weaver, T. Anderson, B. A. Clark, Francesco Lucarelli, Brandom Pries, L. Schumacher, Devyn Rysewyk Cantu, P. Peiffer, J. Kim, Daria Pankova, E. Friedman, M. Kauer, Alan Coleman, John Hardin, Shefali Shefali, Nora Valtonen-Mattila, M. E. Huber, D. B. Fox, Alexander Fritz, D. Z. Besson, T. O. B. Schmidt, E. Bourbeau, Suyong Choi, M. Silva, Najia Moureen Binte Amin, J. P. Lazar, Sebastian Böser, R. Morse, Spencer Griswold, Jakob Bottcher, T. Montaruli, David A. Williams, A. Goldschmidt, K. Mase, Abdul Rehman, David Kappesser, Kurt Woschnagg, Paul Evenson, Clara E. Hill, Le Viet Nguyen, Sebastian Sanchez Herrera, Marcos Santander, Carsten Rott, L. Gerhardt, Y. Popovych, J. Evans, Maria Tselengidou, D. Soldin, J. B. Tjus, Chiara Bellenghi, Alexander A. Harnisch, Benjamin Bastian, Anastasia Maria Barbano, Markus Ackermann, S. W. Barwick, Matti Jansson, Immacolata Carmen Rea, P. Eller, Simone Garrappa, H. Schieler, Dmitry Chirkin, Kael Hanson, A. Kyriacou, A. Olivas, Hermann Kolanoski, Simeon Reusch, A. O. Pollmann, Elisa Bernardini, K. Meagher, S. Hickford, J. C. Gallagher, Kirill Filimonov, Mehmet Gunduz, Agnieszka Leszczyńska, R. C. Bay, Alexander Kappes, Pranav Dave, Jan Soedingrekso, K. Krings, Xianwu Xu, J. Sandroos, James Madsen, Lu Lu, M. J. Weiss, Stef Verpoest, H. Dujmovic, Austin Schneider, Juan Carlos Diaz-Velez, Jenni Adams, K.-H. Becker, Yiqian Xu, M. Plum, A. Wallace, Katharina Morik, J. Stettner, Daniel Bindig, Ramesh Koirala, Gerrit Wrede, C.P. de los Heros, Thomas Huber, Ek Narayan Paudel, Allan Hallgren, Matt Dunkman, R. Joppe, T. Stezelberger, Colin Turley, S. Kopper, Christian Glaser, Paolo Desiati, S. Sarker, C. Alispach, Damian Pieloth, R. G. Stokstad, Ali Kheirandish, Sreetama Goswami, Minjin Jeong, Martin Ha Minh, T. Glüsenkamp, Janet Conrad, G. Krückl, Jannis Necker, Sebastian Baur, R. Cross, Sebastian Fiedlschuster, Surujhdeo Seunarine, Ken'ichi Kin, Jannes Brostean-Kaiser, Chunfai Tung, Alejandro Diaz, M. J. Larson, M. U. Nisa, Tim Ruhe, E. O'Sullivan, René Reimann, Chad Finley, Federica Bradascio, A. V. Balagopal, Alexander Burgman, M. Meier, Michael Campana, F. Huang, Christoph Tönnis, Benjamin Hokanson-Fasig, E. Blaufuss, Leander Fischer, Gerrit Roellinghoff, Mirco Hunnefeld, Marie Oehler, Thomas Stuttard, William Luszczak, G. H. Collin, Sarah Pieper, Dirk Ryckbosch, S. Robertson, R. Snihur, A. Ludwig, Wing Yan Ma, Yang Lyu, Grant Parker, L. Köpke, Karl J. Clark, Juanan Aguilar, I. Safa, Merlin Schaufel, James DeLaunay, Marjon Moulai, Olga Botner, Cristian Jesus Lozano Mariscal, Kendall Mahn, L. Classen, Johan Wulff, K. Wiebe, Timothyblake Watson, J. J. Beatty, Tianlu Yuan, Stephan Meighen-Berger, S. Yoshida, Kayla Leonard, A. Ishihara, V. Baum, H. Niederhausen, Won Nam Kang, Joshua Hignight, A. Sharma, Sukeerthi Dharani, Francis Halzen, J. Merz, Paras Koundal, Mike Richman, X. Bai, Konstancja Satalecka, F. McNally, Emma C. Hettinger, I. Ansseau, Michael Kovacevich, Theo Glauch, Juliana Stachurska, H. Dembinski, Reina H. Maruyama, Frank G. Schröder, Summer Blot, Thomas Ehrhardt, D. Tosi, D. van Eijk, Mark Weyrauch, Spencer Axani, Elisa Lohfink, Aaron Fienberg, Amirreza Raissi, S. Tilav, Michael DuVernois, Carlos Arguelles, Jessie Micallef, Stephanie Bron, R. S. Busse, Y. L. Li, J. P. Yanez, Gerald Przybylski, Christian Haack, Christopher Wiebusch, R. Halliday, Kunal Deoskar, K. Helbing, Alexander Sandrock, N. Kurahashi, Todor Stanev, Benedikt Riedel, Cristina Lagunas Gualda, C. Wendt, G. W. Sullivan, A. Karle, James E. Braun, Philipp Furst, D. Hebecker, G. de Wasseige, George Japaridze, Roger Moore, Paul Coppin, Andrea Turcati, T. Gregoire, J. van Santen, R. Hoffmann, Alex Pizzuto, Gary Binder, J. Bourbeau, Richard Naab, Zhedong Zhang, C. Walck, Thomas K. Gaisser, Ava Ghadimi, Franziska Tischbein, Seongjin In, Elisa Resconi, Alessio Porcelli, P. Mallik, Catherine De Clercq, M. Rongen, Qinrui Liu, Martina Karl, Jochen M. Schneider, Christian Spiering, Justin Vandenbroucke, Maria Prado Rodriguez, Abhishek Desai, Xinyue Kang, Claudio Kopper, S. C. Nowicki, Subir Sarkar, T. Kintscher, Frederik Hermann Lauber, Justin Lanfranchi, David Vannerom, Ben Smithers, Jean Pierre Twagirayezu, A. Haungs, Rui An, Nahee Park, K. Hultqvist, Darren Grant, T. Stürwald, Z. Griffith, Felix Henningsen, A. R. Fazely, Simona Toscano, J. L. Kelley, Markus Ahlers, Erik Ganster, Samvel Ter-Antonyan, Rasha Abbasi, B. J. Whelan, Jan Weldert, L. Halve, Physics, Faculty of Sciences and Bioengineering Sciences, Vriendenkring VUB, Elementary Particle Physics, and collaboration, The IceCube
Subjects: FOS: Computer and information sciences, Computer Science - Machine Learning, Astrophysics::High Energy Astrophysical Phenomena, cs.LG, Data analysis, FOS: Physical sciences, Fitting methods, 01 natural sciences, Convolutional neural network, Calibration, Cluster finding, Neutrino detectors, Pattern recognition, High Energy Physics - Experiment, IceCube Neutrino Observatory, Machine Learning (cs.LG), High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation, Mathematical Physics, 010308 nuclear & particles physics, business.industry, hep-ex, Deep learning, Detector, Neutrino detector, Computer engineering, Orders of magnitude (time), 13. Climate action, Cascade, Pattern recognition (psychology), Artificial intelligence, business
Abstract: Continued improvements on existing reconstruction methods are vital to the success of high-energy physics experiments, such as the IceCube Neutrino Observatory. In IceCube, further challenges arise as the detector is situated at the geographic South Pole where computational resources are limited. However, to perform real-time analyses and to issue alerts to telescopes around the world, powerful and fast reconstruction methods are desired. Deep neural networks can be extremely powerful, and their usage is computationally inexpensive once the networks are trained. These characteristics make a deep learning-based approach an excellent candidate for the application in IceCube. A reconstruction method based on convolutional architectures and hexagonally shaped kernels is presented. The presented method is robust towards systematic uncertainties in the simulation and has been tested on experimental data. In comparison to standard reconstruction methods in IceCube, it can improve upon the reconstruction accuracy, while reducing the time necessary to run the reconstruction by two to three orders of magnitude., Comment: 39 pages, 15 figures, submitted to Journal of Instrumentation; added references
Published: 2021

38. A Test of the Cosmological Principle with Quasars

Author: Sebastian von Hausegger, M. Rameez, Roya Mohayaee, Subir Sarkar, Nathan J. Secrest, Jacques Colin, U.S. Naval Observatory, Inria Nancy - Grand Est, Institut National de Recherche en Informatique et en Automatique (Inria), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Rudolf Peierls Center for Theoretical Physics, University of Oxford [Oxford], Department of High Energy Physics, Tata Institute of Fundamental Research, Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Structurer des formes géométriques (PIXEL), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Department of Algorithms, Computation, Image and Geometry (LORIA - ALGO), Laboratoire Lorrain de Recherche en Informatique et ses Applications (LORIA), Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire Lorrain de Recherche en Informatique et ses Applications (LORIA), Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), and Tata Institute of Fundamental Research [Bangalore]
Subjects: cosmological model, Active galactic nucleus, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010504 meteorology & atmospheric sciences, statistical analysis: confidence limit, Cosmic microwave background, FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Cosmology and Extragalactic Astrophysics, cosmic background radiation, anisotropy, 01 natural sciences, Cosmology, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology (hep-ph), Observational cosmology, 0103 physical sciences, quasar, angular distribution, AGN, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Physics, Infrared astronomy, Cosmological principle, Computer Science::Information Retrieval, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Quasar, flux, Dipole, High Energy Physics - Phenomenology, Space and Planetary Science, kinematics, cryogenics, infrared, galaxy, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], dipole, Astrophysics - Cosmology and Nongalactic Astrophysics, experimental results
Abstract: We study the large-scale anisotropy of the Universe by measuring the dipole in the angular distribution of a flux-limited, all-sky sample of 1.36 million quasars observed by the Wide-field Infrared Survey Explorer (WISE). This sample is derived from the new CatWISE2020 catalog, which contains deep photometric measurements at 3.4 and 4.6 $\mu$m from the cryogenic, post-cryogenic, and reactivation phases of the WISE mission. While the direction of the dipole in the quasar sky is similar to that of the cosmic microwave background (CMB), its amplitude is over twice as large as expected, rejecting the canonical, exclusively kinematic interpretation of the CMB dipole with a p-value of $5\times10^{-7}$ ($4.9\sigma$ for a normal distribution, one-sided), the highest significance achieved to date in such studies. Our results are in conflict with the cosmological principle, a foundational assumption of the concordance $\Lambda$CDM model., Comment: 8 pages, 4 figures, accepted for publication in ApJ Letters. Code and data available at https://doi.org/10.5281/zenodo.4431089
Published: 2021

39. Search for multi-flare neutrino emissions in 10 yr of IceCube data from a catalog of sources

Author: R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, A. A. Alves, N. M. Amin, R. An, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Y. Ashida, S. Axani, X. Bai, A. Balagopal V., A. Barbano, S. W. Barwick, B. Bastian, V. Basu, S. Baur, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, C. Bellenghi, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, M. Boddenberg, F. Bontempo, J. Borowka, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, F. Bradascio, J. Braun, S. Bron, J. Brostean-Kaiser, S. Browne, A. Burgman, R. T. Burley, R. S. Busse, M. A. Campana, E. G. Carnie-Bronca, C. Chen, D. Chirkin, K. Choi, B. A. Clark, K. Clark, L. Classen, A. Coleman, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, C. Dappen, P. Dave, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, S. Dharani, A. Diaz, J. C. Díaz-Vélez, M. Dittmer, H. Dujmovic, M. Dunkman, M. A. DuVernois, E. Dvorak, T. Ehrhardt, P. Eller, R. Engel, H. Erpenbeck, J. Evans, P. A. Evenson, K. L. Fan, A. R. Fazely, S. Fiedlschuster, A. T. Fienberg, K. Filimonov, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, A. Garcia, S. Garrappa, L. Gerhardt, A. Ghadimi, C. Glaser, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, S. Goswami, D. Grant, T. Grégoire, S. Griswold, M. Gündüz, C. Günther, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, M. Ha Minh, K. Hanson, J. Hardin, A. A. Harnisch, A. Haungs, S. Hauser, D. Hebecker, K. Helbing, F. Henningsen, E. C. Hettinger, S. Hickford, J. Hignight, C. Hill, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, B. J. P. Jones, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, M. Kellermann, J. L. Kelley, A. Kheirandish, K. Kin, T. Kintscher, J. Kiryluk, S. R. Klein, R. Koirala, H. Kolanoski, T. Kontrimas, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, T. Kozynets, E. Kun, N. Kurahashi, N. Lad, C. Lagunas Gualda, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, J. W. Lee, K. Leonard, A. Leszczyńska, Y. Li, M. Lincetto, Q. R. Liu, M. Liubarska, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, T. McElroy, F. McNally, J. V. Mead, K. Meagher, A. Medina, M. Meier, S. Meighen-Berger, J. Micallef, D. Mockler, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, R. Naab, R. Nagai, U. Naumann, J. Necker, L. V. Nguyễn, H. Niederhausen, M. U. Nisa, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, M. Oehler, B. Oeyen, A. Olivas, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, L. Paul, C. Pérez de los Heros, L. Peters, J. Peterson, S. Philippen, D. Pieloth, S. Pieper, M. Pittermann, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, P. B. Price, B. Pries, G. T. Przybylski, C. Raab, A. Raissi, M. Rameez, K. Rawlins, I. C. Rea, A. Rehman, P. Reichherzer, R. Reimann, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, E. J. Roberts, S. Robertson, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk Cantu, I. Safa, J. Saffer, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Scharf, M. Schaufel, H. Schieler, S. Schindler, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, F. G. Schröder, L. Schumacher, G. Schwefer, S. Sclafani, D. Seckel, S. Seunarine, A. Sharma, S. Shefali, M. Silva, B. Skrzypek, B. Smithers, R. Snihur, J. Soedingrekso, D. Soldin, C. Spannfellner, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, T. Stürwald, T. Stuttard, G. W. Sullivan, I. Taboada, F. Tenholt, S. Ter-Antonyan, S. Tilav, F. Tischbein, K. Tollefson, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, J. P. Twagirayezu, B. Ty, M. A. Unland Elorrieta, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, S. Verpoest, M. Vraeghe, C. Walck, T. B. Watson, C. Weaver, P. Weigel, A. Weindl, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, N. Whitehorn, C. H. Wiebusch, D. R. Williams, M. Wolf, K. Woschnagg, G. Wrede, J. Wulff, X. W. Xu, Y. Xu, J. P. Yanez, S. Yoshida, S. Yu, T. Yuan, Z. Zhang, Faculty of Sciences and Bioengineering Sciences, Physics, Elementary Particle Physics, and Vriendenkring VUB
Subjects: BLAZAR TXS 0506+056, High-energy astronomy, Population, M87, FOS: Physical sciences, Binomial test, Astrophysics, 030226 pharmacology & pharmacy, 01 natural sciences, ASTROPHYSICAL SOURCES, law.invention, 03 medical and health sciences, 0302 clinical medicine, law, 0103 physical sciences, education, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Astroparticle physics, Physics, astro-ph.HE, COINCIDENT, education.field_of_study, Northern Hemisphere, Astronomy and Astrophysics, MODEL, Physics and Astronomy, Space and Planetary Science, JETS, Neutrino, Neutrino astronomy, Astrophysics - High Energy Astrophysical Phenomena, Flare
Abstract: A recent time-integrated analysis of a catalog of 110 candidate neutrino sources revealed a cumulative neutrino excess in the data collected by IceCube between April 6, 2008 and July 10, 2018. This excess, inconsistent with the background hypothesis in the Northern hemisphere at the $3.3~\sigma$ level, is associated with four sources: NGC 1068, TXS 0506+056, PKS 1424+240 and GB6 J1542+6129. This letter presents two time-dependent neutrino emission searches on the same data sample and catalog: a point-source search that looks for the most significant time-dependent source of the catalog by combining space, energy and time information of the events, and a population test based on binomial statistics that looks for a cumulative time-dependent neutrino excess from a subset of sources. Compared to previous time-dependent searches, these analyses enable a feature to possibly find multiple flares from a single direction with an unbinned maximum-likelihood method. M87 is found to be the most significant time-dependent source of this catalog at the level of $1.7~\sigma$ post-trial, and TXS 0506+056 is the only source for which two flares are reconstructed. The binomial test reports a cumulative time-dependent neutrino excess in the Northern hemisphere at the level of $3.0~\sigma$ associated with four sources: M87, TXS 0506+056, GB6 J1542+6129 and NGC 1068.
Published: 2021

40. EV-Scale Sterile Neutrino Search Using Eight Years of Atmospheric Muon Neutrino Data from the IceCube Neutrino Observatory

Author: K. Tollefson, Albrecht Karle, U. Katz, R. S. Busse, G. H. Collin, Christopher Wiebusch, Kunal Deoskar, Thomas Ehrhardt, P. Schlunder, R. Hellauer, Spencer Axani, D. B. Fox, Kayla Leonard, R. Maunu, Alan Coleman, Sukeerthi Dharani, Francis Halzen, J. Merz, S. Hickford, R. Joppe, A. Wallace, Delia Tosi, Sebastian Baur, M. G. Aartsen, Carlos Arguelles, David Vannerom, I. Ansseau, Hermann Kolanoski, Juliana Stachurska, H. Dembinski, Stef Verpoest, Jessie Micallef, Matthias Vraeghe, George Japaridze, Roger Moore, Tim Ruhe, N. Kurahashi, Todor Stanev, C. Wendt, Ioana Codrina Maris, H. Bagherpour, Johan Wulff, Sebastian Böser, Olga Botner, J. Kim, Elisa Bernardini, A. Ludwig, Christoph Raab, Nadège Iovine, Timothyblake Watson, D. Heereman, Gisela Anton, M. Stamatikos, J. Bourbeau, K. Rawlins, G. de Wasseige, Won Nam Kang, V. Baum, Jenni Adams, D. Berley, G. C. Hill, H. Niederhausen, A. Steuer, C. Alispach, Bunheng Ty, Stephen L. Hauser, Raamis Hussain, Janet Conrad, B. Relethford, Jan Soedingrekso, Ralph Engel, Moritz Kellermann, Z. Griffith, Y. Makino, Seongjin In, R. Hoffmann, James Madsen, Konstancja Satalecka, Benjamin Bastian, Theo Glauch, Anastasia Maria Barbano, Saskia Philippen, F. Jonske, R. Cross, M. J. Larson, Lu Lu, T. Kittler, X. Bai, G. Neer, Alexander Fritz, A. Goldschmidt, D. van Eijk, Lenka Tomankova, Giovanni Renzi, D. Seckel, S. Fahey, Elisa Resconi, Alessio Porcelli, Claudio Kopper, Daniel Bindig, G. Krückl, Alejandro Diaz, C. Pérez de los Heros, E. O’Sullivan, Le Viet Nguyen, Wing Yan Ma, James DeLaunay, Marjon Moulai, R. G. Stokstad, K. Krings, M. Plum, P. B. Price, William Luszczak, M. Kauer, Suyong Choi, David Kappesser, S. E. Sanchez Herrera, Francesco Lucarelli, T. O. B. Schmidt, Tyce DeYoung, Chad Finley, Nathan Whitehorn, Immacolata Carmen Rea, Matti Jansson, D. Z. Besson, C. Walck, Thomas K. Gaisser, G. B. Yodh, A. Kyriacou, M. Silva, Najia Moureen Binte Amin, K.-H. Becker, Yiqian Xu, Qinrui Liu, J. Becker Tjus, T. Glüsenkamp, Subir Sarkar, Martina Karl, Matt Dunkman, Kendall Mahn, Christoph Tönnis, F. Huang, K. Meagher, Jochen M. Schneider, J. Stettner, T. R. Wood, Kurt Woschnagg, Paul Evenson, T. Palczewski, S. De Ridder, Y. L. Li, G. W. Sullivan, J. J. Beatty, Tianlu Yuan, Jeffrey Lazar, Chunfai Tung, James E. Braun, Alexander Trettin, E. Cheung, J. Werthebach, Thomas Stuttard, Mirco Hunnefeld, Marie Oehler, Alexander Sandrock, Elisa Lohfink, Thomas Meures, N. L. Strotjohann, M. A. Unland Elorrieta, M. Wallraff, Michael DuVernois, Benjamin Hokanson-Fasig, Felix Henningsen, Karl J. Clark, Simone Garrappa, Dmitry Chirkin, Sarah Pieper, D. Hebecker, Anatoli Fedynitch, K. Helbing, Chujie Chen, Dirk Ryckbosch, Joshua Hignight, M. Zöcklein, T. Grégoire, Timo Sturwald, J. C. Gallagher, Timo Karg, Gerald Przybylski, Federica Bradascio, Yang Lyu, Alexander Kappes, Alexander Burgman, M. Song, T. L. Carver, Paras Koundal, Mike Richman, Sarah Mancina, Paul Coppin, Anna Franckowiak, Tobias Hoinka, Vedant Basu, Steve Sclafani, F. McNally, A. R. Fazely, M. Usner, Grant Parker, R. Halliday, Stephan Meighen-Berger, K. D. de Vries, Gerrit Wrede, Andrea Turcati, J. van Santen, K. Hoshina, Glenn Spiczak, Thomas Huber, G. Momenté, Merlin Schaufel, A. Stößl, J. Kiryluk, K. Andeen, D. R. Nygren, Marek Kowalski, A. Weindl, Maryon Ahrens, Frederik Tenholt, R. Nagai, M. Medici, M. Rameez, Javier Gonzalez, Roxanne Turcotte, Alex Pizzuto, D. F. Cowen, Reina H. Maruyama, E. Pinat, N. Kulacz, U. Naumann, Martin Rongen, Ek Narayan Paudel, Allan Hallgren, Giorgio Maggi, K. Wiebe, A. Balagopal, Gary Binder, Zhedong Zhang, E. Unger, Simona Toscano, J. Auffenberg, Pablo Correa, Summer Blot, Brian Clark, C. De Clercq, P. Heix, K. Mase, P. Mallik, M. E. Huber, A. O'Murchadha, Marcos Santander, Ramesh Koirala, David A. Williams, L. Schumacher, Benedikt Riedel, S. Tilav, Max Renschler, D. Kang, D. J. Koskinen, Markus Ackermann, S. W. Barwick, L. Gerhardt, M. J. Weiss, E. Bourbeau, J. P. Yanez, Ben Smithers, Colin Turley, A. Olivas, S. Kopper, Spencer Griswold, I. Taboada, Michael O. Wolf, René Reimann, A. Haungs, M. Prado Rodriguez, Maria Tselengidou, D. Soldin, Nahee Park, Pranav Dave, K. Hultqvist, Darren Grant, E. Blaufuss, Mehmet Gunduz, Agnieszka Leszczyńska, R. C. Bay, M. Günder, Austin Schneider, Steven Robertson, Juan Carlos Diaz-Velez, Shefali Shefali, L. Classen, T. Stezelberger, Abdul Rehman, Carsten Rott, Y. Popovych, T. Kintscher, Frederik Hermann Lauber, Xianwu Xu, A. Terliuk, J. Sandroos, C. Bohm, Justin Lanfranchi, Christian Spiering, Justin Vandenbroucke, Abhishek Desai, S. C. Nowicki, Rasha Abbasi, B. J. Whelan, Jan Weldert, L. Halve, Philipp Eller, J. Felde, J. Buscher, D. Rysewyk Cantu, A. Obertacke Pollmann, J. L. Kelley, Markus Ahlers, Erik Ganster, Samvel Ter-Antonyan, Frank G. Schröder, J. Lünemann, N. van Eijndhoven, C. Haack, Emily Dvorak, Aaron Fienberg, Amirreza Raissi, Minjin Jeong, Chris Weaver, Stephanie Bron, C. J. Lozano Mariscal, H. Dujmovic, L. Rauch, S. Yoshida, Surujhdeo Seunarine, R. Snihur, Juanan Aguilar, Kael Hanson, A. Ishihara, Maximilian Meier, Paolo Desiati, Segev BenZvi, Spencer Klein, B. J. P. Jones, Andres Medina, Kara Hoffman, D. Mockler, Hershal Pandya, Daria Pankova, E. Friedman, Wolfgang Rhode, Robert Stein, L. Wills, P. Muth, R. Morse, Jakob Bottcher, T. Montaruli, Maximilian Karl Scharf, P. Peiffer, Ibrahim Safa, Damian Pieloth, Ali Kheirandish, W. Van Driessche, Jannes Brostean-Kaiser, M. U. Nisa, L. Köpke, T. Anderson, John Hardin, H. Schieler, Kirill Filimonov, Physics, Faculty of Sciences and Bioengineering Sciences, Vriendenkring VUB, and Elementary Particle Physics
Subjects: Sterile neutrino, Physics::Instrumentation and Detectors, General Physics and Astronomy, sterile [neutrino], 01 natural sciences, Cosmology, IceCube, High Energy Physics - Experiment, Subatomär fysik, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Astronomi, astrofysik och kosmologi, Subatomic Physics, TOOL, Astronomy, Astrophysics and Cosmology, atmosphere [muon], Muon neutrino, Physics, oscillation [neutrino], Astrophysics::Instrumentation and Methods for Astrophysics, hep-ph, neutrino: sterile, mass difference [neutrino], ddc, muon: atmosphere, observatory, High Energy Physics - Phenomenology, Physique des particules élémentaires, signature, Particle physics, data analysis method, Scale (ratio), Astrophysics::High Energy Astrophysical Phenomena, neutrino: mass difference, FOS: Physical sciences, IceCube Neutrino Observatory, statistical analysis, 0103 physical sciences, OSCILLATIONS, ddc:530, 010306 general physics, hep-ex, ICE, High Energy Physics::Phenomenology, neutrino: mixing angle, CONVERSION, Physics and Astronomy, COSMOLOGY, High Energy Physics::Experiment, neutrino: oscillation, BAYESIAN-INFERENCE, mixing angle [neutrino], experimental results
Abstract: Physical review letters 125(14), 141801 (1-11) (2020). doi:10.1103/PhysRevLett.125.141801, The results of a 3+1 sterile neutrino search using eight years of data from the IceCube Neutrino Observatory are presented. A total of 305 735 muon neutrino events are analyzed in reconstructed energy-zenith space to test for signatures of a matter-enhanced oscillation that would occur given a sterile neutrino state with a mass-squared differences between 0.01 and 100 eV$^2$. The best-fit point is found to be at sin$^2$($2θ_{24}$)=0.10 and $Δm_{41}^2$=4.5 eV$^2$, which is consistent with the no sterile neutrino hypothesis with a $p$ value of 8.0%., Published by APS, College Park, Md.
Published: 2020

41. IceCube-Gen2: The Window to the Extreme Universe

Author: J. Kim, A. Gartner, A. Obertacke Pollmann, B. Hoffmann, J. L. Kelley, Markus Ahlers, Jenni Adams, Akimichi Taketa, D. van Eijk, Daniel Bindig, G. H. Collin, T. C. Arlen, Robert Lahmann, J. J. Beatty, Tianlu Yuan, U. Nauman, Azadeh Keivani, Y. L. Li, Karl J. Clark, T. Kintscher, M. Song, T. L. Carver, Paras Koundal, Michael Kovacevich, Christian Glaser, Frederik Hermann Lauber, T. Huege, Erik Ganster, Benedikt Riedel, D. Seckel, Anna Nelles, R. G. Stokstad, F. McNally, R. Maunu, M. Prado Rodriguez, Kayla Leonard, N. Kurahashi, James E. Braun, Amy Connolly, Samvel Ter-Antonyan, A. Terliuk, Justin Lanfranchi, Pranav Dave, Jannis Necker, C. Wendt, S. Wren, A. Sharma, Sukeerthi Dharani, David Vannerom, M. H. Shaevitz, Alexander Trettin, Reina H. Maruyama, Francis Halzen, J. Merz, K. Krings, Rasha Abbasi, Ben Smithers, Qinrui Liu, M. J. Larson, T. Anderson, Summer Blot, G. de Wasseige, I. Ansseau, D. Hebecker, Jorge Torres, Killian Holzapfel, Martina Karl, C. J. Lozano Mariscal, John Hardin, Jean Pierre Twagirayezu, Daniel García-Fernández, T. Stezelberger, S. Mandalia, E. O'Sullivan, R. Hoffmann, M. Plum, Juliana Stachurska, H. Dembinski, C. Pérez de los Heros, S. Márka, G. WSullivan, A. Haungs, Paul Coppin, Z. Griffith, J. C. Gallagher, Saskia Philippen, Federica Bradascio, Jochen M. Schneider, Srubabati Goswami, Andrea Turcati, Wing Yan Ma, Nahee Park, Y. Makino, Sarah Mancina, C. Walck, M. Kauer, Suyong Choi, Anna Franckowiak, Tobias Hoinka, Chad Finley, David Kappesser, T. Gregoire, Ella Roberts, J. van Santen, S. De Ridder, Jan Weldert, Chunfai Tung, F. Jonske, Ken'ichi Kin, L. Halve, Philipp Eller, K. Hultqvist, N. L. Strotjohann, H. Dujmovic, Vedant Basu, M. A. Unland Elorrieta, Alex Pizzuto, K. D. de Vries, I. CMariş, Gerrit Wrede, R. Gernhaeuser, Thomas Huber, Matti Jansson, Thomas K. Gaisser, M. Richman, Christoph Tönnis, James DeLaunay, Gary Binder, K.-H. Becker, Ek Narayan Paudel, Allan Hallgren, U. Latif, Hiroyuki Tanaka, I. Safa, Steve Sclafani, J. Kiryluk, K. Andeen, P. B. Price, H. Schieler, Kirill Filimonov, Segev BenZvi, Alexander Fritz, D. Z. Besson, Darren Grant, Marjon Moulai, Yiqian Xu, Felix Henningsen, S. Robertson, Aswathi Balagopal, Francesco Lucarelli, Pisin Chen, Matt Dunkman, Merlin Schaufel, Patrick Allison, Spencer Klein, Cosmin Deaconu, Tim Ruhe, A. Ludwig, George Japaridze, Javier Gonzalez, C. B. Krauss, Roxanne Turcotte, T. O. B. Schmidt, Simona Toscano, Roger Moore, P. Heix, R. S. Busse, Chujie Chen, Pablo Correa, L. Gerhard, S. De Kockere, J. Felde, Surujhdeo Seunarine, R. Snihur, J. Buscher, D. Rysewyk Cantu, A. Weindl, R. Hellauer, Giorgio Maggi, H. Niederhausen, Mauricio Bustamante, D. Southall, Julia Böttcher, J. Bourbeau, Lenka Tomankova, Maryon Ahrens, A. Burgman, Christopher Wiebusch, Darko Veberič, Juanan Aguilar, T. R. Wood, Christian Spiering, Frederik Tenholt, R. Nagai, L. Schumacher, C. De Clercq, Benjamin Hokanson-Fasig, L. V. Nguyen, C. Lagunas Gualda, K. Hughes, Kara Hoffman, C. Alispach, J. M. LoSecco, Joshua Hignight, K. Helbing, Timo Sturwald, Xinyue Kang, Richard Naab, Kunal Deoskar, Janet Conrad, Zackary Meyers, K. Meagher, Mehmet Gunduz, Agnieszka Leszczyńska, R. C. Bay, David A. Williams, Kurt Woschnagg, M. Zöcklein, M. Silva, Claudio Kopper, Eric Oberla, Ramesh Koirala, E. Cheung, Thomas Stuttard, Martin Rongen, Najia Moureen Binte Amin, R. Cross, Paul Evenson, A. Karle, Sebastian Böser, Seongjin In, Johannes Werthebach, J. P. Lazar, Markus Ackermann, Austin Schneider, Yang Lyu, Justin Vandenbroucke, Juan Carlos Diaz-Velez, Beverley A. Clark, Timo Karg, Sarah Pieper, Hershal Pandya, Wolfgang Rhode, Zhedong Zhang, P. Schlunder, A. Ishihara, Elisa Resconi, Subir Sarkar, William Luszczak, Clara E. Hill, Ava Ghadimi, Alessio Porcelli, Alan Coleman, J. Auffenberg, Grant Parker, Robert Stein, Dirk Ryckbosch, Benjamin Bastian, Anastasia Maria Barbano, Abhishek Desai, T. Kittler, J. Nam, P. Mallik, E. Blaufuss, S. Zierke, T. Stanev, M. Bohmer, Stephan Meighen-Berger, Simone Garrappa, P. Muth, Dmitry Chirkin, M. E. Huber, Marcos Santander, Christoph Raab, Nadège Iovine, J. Becker Tjus, L. Classen, Colin Turley, S. C. Nowicki, K. Farrag, M. Kleifges, O. Kalekin, A. Olivas, Alexander Kappes, D. Berley, G. C. Hill, Abigail G. Vieregg, Frank G. Schröder, D. Heinen, Erin Carnie-Bronca, N. Kulacz, D. Tosi, J. C. Hanson, Bunheng Ty, Ralph Engel, Moritz Kellermann, Gisela Anton, Elisa Lohfink, Elisa Bernardini, Damian Pieloth, Ali Kheirandish, Jan Soedingrekso, Giovanni Renzi, Michael DuVernois, Jannes Brostean-Kaiser, K. Wiebe, S. Fahey, A. R. Fazely, Tyce DeYoung, J. Lünemann, Thomas Ehrhardt, Nathan Whitehorn, Immacolata Carmen Rea, M. U. Nisa, Aaron Fienberg, Gerald Przybylski, G. Krückl, L. Papp, Amirreza Raissi, L. Köpke, Chris Weaver, R. Halliday, Alejandro Diaz, Stephanie Bron, S. Söldner-Rembold, James Pinfold, Ryan Burley, M. Riegel, H. Bagherpour, Stephanie Wissel, Olga Botner, Y. Pan, A. Steuer, S. Tilav, D. Kang, M. deWith, V. Baum, J. P. Yanez, I. Taboada, Stephen L. Hauser, Raamis Hussain, Michael O. Wolf, M. Stamatikos, John Evans, Shefali Shefali, Christoph Welling, Abdul Rehman, Carsten Rott, K. Tollefson, A. Goldschmidt, Y. Popovych, Troels Petersen, S. E. Sanchez Herrera, Simeon Reusch, S. Hickford, Xianwu Xu, J. Sandroos, C. Bohm, R. Joppe, Spencer Axani, Sebastian Baur, Carlos Arguelles, Jessie Micallef, Teppei Katori, K. Rawlins, James Madsen, Lu Lu, M. G. Aartsen, T. Glüsenkamp, M. Meier, Michael Campana, P. Sandstrom, Kendall Mahn, B. J. P. Jones, K. Hoshina, Glenn Spiczak, Andres Medina, G. Momenté, D. Mockler, M. Rameez, D. F. Cowen, Daria Pankova, E. Friedman, R. Morse, T. Montaruli, E. Unger, Maximilian Karl Scharf, P. Peiffer, J. Stettner, Gerrit Roellinghoff, Mirco Hunnefeld, Marie Oehler, Max Renschler, D. J. Koskinen, E. Bourbeau, Spencer Griswold, Maria Tselengidou, D. Soldin, Z. Márka, Minjin Jeong, L. Rauch, S. Yoshida, N. van Eijndhoven, C. Haack, Emily Dvorak, D. R. Nygren, Marek Kowalski, Kael Hanson, Paolo Desiati, J. Haugen, Lars Steffen Weinstock, Johan Wulff, Won Nam Kang, Timothyblake Watson, X. Bai, G. Neer, Konstancja Satalecka, Theo Glauch, U. Katz, Alexander Sandrock, Ilse Plaisier, K. Mase, D. B. Fox, Hermann Kolanoski, M. J. Weiss, Stef Verpoest, Imre Bartos, David J. Smith, S. Kopper, René Reimann, Leander Fischer, F. Huang, Matthias Vraeghe, Physics, Faculty of Sciences and Bioengineering Sciences, Vriendenkring VUB, and Elementary Particle Physics
Subjects: Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Nuclear and High Energy Physics, Active galactic nucleus, 010308 nuclear & particles physics, High-energy astronomy, Gravitational wave, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, FOS: Physical sciences, Cosmic ray, 01 natural sciences, Universe, Neutron star, 0103 physical sciences, Neutrino, Neutrino astronomy, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, media_common
Abstract: The observation of electromagnetic radiation from radio to $\gamma$-ray wavelengths has provided a wealth of information about the universe. However, at PeV (10$^{15}$ eV) energies and above, most of the universe is impenetrable to photons. New messengers, namely cosmic neutrinos, are needed to explore the most extreme environments of the universe where black holes, neutron stars, and stellar explosions transform gravitational energy into non-thermal cosmic rays. The discovery of cosmic neutrinos with IceCube has opened this new window on the universe. In this white paper, we present an overview of a next-generation instrument, IceCube-Gen2, which will sharpen our understanding of the processes and environments that govern the universe at the highest energies. IceCube-Gen2 is designed to: 1) Resolve the high-energy neutrino sky from TeV to EeV energies; 2) Investigate cosmic particle acceleration through multi-messenger observations; 3) Reveal the sources and propagation of the highest energy particles in the universe; 4) Probe fundamental physics with high-energy neutrinos. IceCube-Gen2 will increase the annual rate of observed cosmic neutrinos by a factor of ten compared to IceCube, and will be able to detect sources five times fainter than its predecessor. Furthermore, through the addition of a radio array, IceCube-Gen2 will extend the energy range by several orders of magnitude compared to IceCube. Construction will take 8 years and cost about \$350M. The goal is to have IceCube-Gen2 fully operational by 2033. IceCube-Gen2 will play an essential role in shaping the new era of multi-messenger astronomy, fundamentally advancing our knowledge of the high-energy universe. This challenging mission can be fully addressed only in concert with the new survey instruments across the electromagnetic spectrum and gravitational wave detectors which will be available in the coming years., Comment: 56 pages, 29 figures
Published: 2020

42. IceCube Search for High-Energy Neutrino Emission from TeV Pulsar Wind Nebulae

Author: C. Haack, Immacolata Carmen Rea, Emily Dvorak, K.-H. Becker, K. Hoshina, Yiqian Xu, Matt Dunkman, K. Mase, Yuya Makino, Minjin Jeong, Timothyblake Watson, Thomas Meures, B. Relethford, E. Cheung, Saskia Philippen, M. J. Weiss, Konstancja Satalecka, Theo Glauch, L. Rauch, U. Katz, Thomas Stuttard, S. De Ridder, Jeffrey Lazar, P. B. Price, D. Heereman, S. Yoshida, D. B. Fox, S. Kopper, Sarah Pieper, K. Jero, N. L. Strotjohann, Hermann Kolanoski, Dirk Ryckbosch, Stef Verpoest, Colin Turley, Felix Henningsen, M. Zöcklein, René Reimann, C. Alispach, Lenka Tomankova, T. Grégoire, Timo Karg, A. Steuer, Stephan Meighen-Berger, Janet Conrad, Thomas Ehrhardt, Frank G. Schröder, A. R. Fazely, M. Silva, Francesco Lucarelli, Raamis Hussain, R. Cross, A. Obertacke Pollmann, E. Pinat, T. O. B. Schmidt, Johannes Werthebach, M. Usner, Kael Hanson, Karl J. Clark, Maximilian Meier, S. Hickford, R. Joppe, Delia Tosi, Sebastian Baur, Chujie Chen, A. Weindl, Maryon Ahrens, Frederik Tenholt, R. Nagai, K. Helbing, Won Nam Kang, X. Bai, G. Neer, Simona Toscano, P. Heix, R. Maunu, J. Lünemann, William Luszczak, S. Tilav, M. Medici, Christian Spiering, L. Wills, P. Muth, P. Schlunder, Daria Pankova, E. Friedman, R. S. Busse, M. Song, T. L. Carver, Mike Richman, Amirreza Raissi, Federica Bradascio, Alexander Burgman, T. R. Wood, Ramesh Koirala, J. P. Yanez, Karim Ghorbani, Spencer Axani, Christopher Wiebusch, Kunal Deoskar, Paolo Desiati, Chris Weaver, Stephanie Bron, Kurt Woschnagg, C. J. Lozano Mariscal, G. Merino, Tim Ruhe, Justin Vandenbroucke, H. Bagherpour, Alexander Sandrock, J. L. Kelley, Markus Ahlers, Martin Rongen, George Japaridze, Roger Moore, A. Ludwig, Olga Botner, Paul Evenson, M. G. Aartsen, N. Wandkowsky, H. Dujmovic, Merlin Schaufel, M. Stamatikos, E. Blaufuss, Ioana Codrina Maris, L. Wille, H. Niederhausen, Carlos Arguelles, Ibrahim Safa, V. Baum, Jessie Micallef, L. Classen, Damian Pieloth, Ali Kheirandish, N. Kurahashi, J. Bourbeau, D. Kang, Todor Stanev, K. Tollefson, Surujhdeo Seunarine, Albrecht Karle, D. van Eijk, Christoph Raab, Nadège Iovine, P. Mallik, Simone Garrappa, Dmitry Chirkin, S. C. Nowicki, W. Van Driessche, C. Wendt, Alexander Kappes, Erik Ganster, K. Mallot, R. Morse, James W. Wood, Z. Griffith, Jakob Bottcher, D. Berley, G. C. Hill, Bunheng Ty, R. Snihur, T. Montaruli, Jannes Brostean-Kaiser, Juanan Aguilar, G. de Wasseige, G. W. Sullivan, K. Rawlins, Donglian Xu, Seongjin In, B. J. P. Jones, Ralph Engel, Moritz Kellermann, Elisa Resconi, I. Taboada, Samvel Ter-Antonyan, Elisa Lohfink, James E. Braun, Gisela Anton, James Madsen, Lu Lu, Alessio Porcelli, T. Kintscher, Frederik Hermann Lauber, Giovanni Renzi, A. Goldschmidt, D. Hebecker, Qinrui Liu, R. Hoffmann, T. Glüsenkamp, Le Viet Nguyen, L. Köpke, D. Seckel, S. Fahey, Michael O. Wolf, Alexander Fritz, D. Z. Besson, Martina Karl, A. Wallace, A. Terliuk, Paul Coppin, Andrea Turcati, Justin Lanfranchi, J. van Santen, Mehr Nisa, Jochen M. Schneider, B. J. Whelan, Claudio Kopper, A. Ishihara, Tyce DeYoung, Andres Medina, Alexander Trettin, Nathan Whitehorn, Alex Pizzuto, D. R. Nygren, Gerald Przybylski, S. E. Sanchez Herrera, M. A. Unland Elorrieta, Gary Binder, R. Halliday, A. Haungs, C. Pérez de los Heros, K. Krings, D. Mockler, Nahee Park, K. Hultqvist, M. Wallraff, Darren Grant, Kendall Mahn, C. Walck, Alan Coleman, E. O’Sullivan, T. Anderson, Marek Kowalski, J. C. Gallagher, M. Plum, Subir Sarkar, Jan Weldert, Thomas K. Gaisser, G. B. Yodh, A. Kyriacou, Gerrit Wrede, K. Meagher, L. Halve, Philipp Eller, Thomas Huber, Allan Hallgren, Benjamin Hokanson-Fasig, Yang Lyu, Elisa Bernardini, J. Auffenberg, Chunfai Tung, J. Becker Tjus, J. Felde, J. Buscher, D. Rysewyk Cantu, Jenni Adams, P. Peiffer, Joshua Hignight, Timo Sturwald, H. Schieler, Kirill Filimonov, K. Wiebe, Steven Robertson, R. G. Stokstad, Segev BenZvi, Shefali Shefali, Spencer Klein, Abdul Rehman, Carsten Rott, Kara Hoffman, Javier Gonzalez, Roxanne Turcotte, Giorgio Maggi, Matthias Vraeghe, C. De Clercq, Hershal Pandya, Wolfgang Rhode, David A. Williams, Xianwu Xu, Robert Stein, J. Sandroos, Markus Ackermann, S. W. Barwick, C. Bohm, J. Kim, Daniel Bindig, K. D. de Vries, N. Kulacz, Brian Clark, Chad Finley, Christoph Tönnis, Pranav Dave, M. Günder, T. Stezelberger, G. H. Collin, Sarah Mancina, Anna Franckowiak, Tobias Hoinka, Kayla Leonard, Steve Sclafani, Jan Soedingrekso, Francis Halzen, J. Kiryluk, K. Andeen, I. Ansseau, G. Krückl, Juliana Stachurska, Alejandro Diaz, Pablo Correa, H. Dembinski, M. Kauer, Suyong Choi, David Kappesser, R. Hellauer, Matti Jansson, T. Palczewski, Sebastian Böser, Benjamin Bastian, Anastasia Maria Barbano, T. Kittler, B. Eberhardt, M. E. Huber, Marcos Santander, L. Gerhardt, A. Olivas, M. J. Larson, Wing Yan Ma, James DeLaunay, Marjon Moulai, J. J. Beatty, Tianlu Yuan, F. McNally, A. Stößl, Reina H. Maruyama, Summer Blot, F. Jonske, L. Schumacher, F. Huang, Mehmet Gunduz, Agnieszka Leszczyńska, R. C. Bay, Austin Schneider, Juan Carlos Diaz-Velez, Glenn Spiczak, G. Momenté, M. Rameez, D. F. Cowen, U. Naumann, E. Unger, A. O'Murchadha, Max Renschler, D. J. Koskinen, E. Bourbeau, Spencer Griswold, Maria Tselengidou, D. Soldin, J. Stettner, Mirco Hunnefeld, Marie Oehler, N. van Eijndhoven, Physics, Faculty of Sciences and Bioengineering Sciences, Vriendenkring VUB, and Elementary Particle Physics
Subjects: 010504 meteorology & atmospheric sciences, High-energy astronomy, Astrophysics::High Energy Astrophysical Phenomena, Neutrino astronomy, High energy astrophysics, FOS: Physical sciences, Cosmic ray, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, Pulsar, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Astronomy and Astrophysics, Galactic plane, COSMIC-RAYS, CRAB-NEBULA, Crab Nebula, Physics and Astronomy, 13. Climate action, Space and Planetary Science, GALACTIC SOURCES, DISCOVERY, Physique des particules élémentaires, High Energy Physics::Experiment, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, GAMMA-RAY EMISSION, Lepton
Abstract: Pulsar wind nebulae (PWNe) are the main gamma-ray emitters in the Galactic plane. They are diffuse nebulae that emit nonthermal radiation. Pulsar winds, relativistic magnetized outflows from the central star, shocked in the ambient medium produce a multiwavelength emission from the radio through gamma-rays. Although the leptonic scenario is able to explain most PWNe emission, a hadronic contribution cannot be excluded. A possible hadronic contribution to the high-energy gamma-ray emission inevitably leads to the production of neutrinos. Using 9.5 yr of all-sky IceCube data, we report results from a stacking analysis to search for neutrino emission from 35 PWNe that are high-energy gamma-ray emitters. In the absence of any significant correlation, we set upper limits on the total neutrino emission from those PWNe and constraints on hadronic spectral components., SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2020

43. In-situ calibration of the single-photoelectron charge response of the IceCube photomultiplier tubes

Author: M.G. Aartsen, M. Ackermann, J. Adams, J.A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A. Balagopal V., A. Barbano, S.W. Barwick, B. Bastian, V. Baum, S. Baur, R. Bay, J.J. Beatty, K.-H. Becker, J. Becker Tjus, S. BenZvi, D. Berley, E. Bernardini, D.Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, S. Bron, J. Brostean-Kaiser, A. Burgman, J. Buscher, R.S. Busse, T. Carver, C. Chen, E. Cheung, D. Chirkin, S. Choi, K. Clark, L. Classen, A. Coleman, G.H. Collin, J.M. Conrad, P. Coppin, P. Correa, D.F. Cowen, R. Cross, P. Dave, C. De Clercq, J.J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K.D. de Vries, G. de Wasseige, M. de With, T. DeYoung, A. Diaz, J.C. Díaz-Vélez, H. Dujmovic, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, P. Eller, R. Engel, P.A. Evenson, S. Fahey, A.R. Fazely, J. Felde, K. Filimonov, C. Finley, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, T.K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, K. Ghorbani, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J.G. Gonzalez, D. Grant, Z. Griffith, S. Griswold, M. Günder, M. Gündüz, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, A. Haungs, D. Hebecker, D. Heereman, P. Heix, K. Helbing, R. Hellauer, F. Henningsen, S. Hickford, J. Hignight, G.C. Hill, K.D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, G.S. Japaridze, M. Jeong, K. Jero, B.J.P. Jones, F. Jonske, R. Joppe, D. Kang, W. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J.L. Kelley, A. Kheirandish, J. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S.R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D.J. Koskinen, M. Kowalski, K. Krings, G. Krückl, N. Kulacz, N. Kurahashi, A. Kyriacou, M. Labare, J.L. Lanfranchi, M.J. Larson, F. Lauber, J.P. Lazar, K. Leonard, A. Leszczyńska, M. Leuermann, Q.R. Liu, E. Lohfink, C.J. Lozano Mariscal, L. Lu, F. Lucarelli, J. Lünemann, W. Luszczak, Y. Lyu, W.Y. Ma, J. Madsen, G. Maggi, K.B.M. Mahn, Y. Makino, P. Mallik, K. Mallot, S. Mancina, I.C. Mariş, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, A. Medina, M. Meier, S. Meighen-Berger, T. Menne, G. Merino, T. Meures, J. Micallef, D. Mockler, G. Momenté, T. Montaruli, R.W. Moore, R. Morse, M. Moulai, P. Muth, R. Nagai, U. Naumann, G. Neer, H. Niederhausen, M.U. Nisa, S.C. Nowicki, D.R. Nygren, A. Obertacke Pollmann, M. Oehler, A. Olivas, A. O'Murchadha, E. O'Sullivan, T. Palczewski, H. Pandya, D.V. Pankova, N. Park, P. Peiffer, C. Pérez de los Heros, S. Philippen, D. Pieloth, E. Pinat, A. Pizzuto, M. Plum, A. Porcelli, P.B. Price, G.T. Przybylski, C. Raab, A. Raissi, M. Rameez, L. Rauch, K. Rawlins, I.C. Rea, R. Reimann, B. Relethford, M. Renschler, G. Renzi, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S.E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, H. Schieler, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, F.G. Schröder, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, S. Shefali, M. Silva, R. Snihur, J. Soedingrekso, D. Soldin, M. Song, G.M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, P. Steinmüller, J. Stettner, A. Steuer, T. Stezelberger, R.G. Stokstad, A. Stößl, N.L. Strotjohann, T. Stürwald, T. Stuttard, G.W. Sullivan, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, K. Tollefson, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C.F. Tung, A. Turcati, R. Turcotte, C.F. Turley, B. Ty, E. Unger, M.A. Unland Elorrieta, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, T.B. Watson, C. Weaver, A. Weindl, M.J. Weiss, J. Weldert, C. Wendt, J. Werthebach, B.J. Whelan, N. Whitehorn, K. Wiebe, C.H. Wiebusch, L. Wille, D.R. Williams, L. Wills, M. Wolf, J. Wood, T.R. Wood, K. Woschnagg, G. Wrede, D.L. Xu, X.W. Xu, Y. Xu, J.P. Yanez, G. Yodh, S. Yoshida, T. Yuan, M. Zöcklein, Physics, Faculty of Sciences and Bioengineering Sciences, Vriendenkring VUB, and Elementary Particle Physics
Subjects: electron, Physics - Instrumentation and Detectors, Detector modelling and simulations II (electric fields, Physics::Instrumentation and Detectors, Monte Carlo method, 01 natural sciences, charge distribution, 030218 nuclear medicine & medical imaging, IceCube, 0302 clinical medicine, DESIGN, charge, emission, (photomultipliers, Instrumentation, Photon detectors for UV, physics.ins-det, Mathematical Physics, Physics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Charge density, calibration [photomultiplier], Monte Carlo [numerical calculations], Instrumentation and Detectors (physics.ins-det), photomultiplier: calibration, Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission, etc), Neutrino detector, HPDs, Physique des particules élémentaires, Neutrino, numerical calculations: Monte Carlo, others), photoelectron, Photomultiplier, data analysis method, pulse formation, Visible and IR photons (vacuum) (photomultipliers, HPDs, others), FOS: Physical sciences, Particle detector, IceCube Neutrino Observatory, 03 medical and health sciences, Optics, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Visible and IR photons (vacuum) (photomultipliers, ddc:610, etc), multiplication and induction, 010308 nuclear & particles physics, business.industry, PERFORMANCE, visible and IR photons (vacuum), charge transport, Physics and Astronomy, electron emission, transport, business
Abstract: Journal of Instrumentation 15(06), P06032 (2020). doi:10.1088/1748-0221/15/06/P06032, We describe an improved in-situ calibration of the single-photoelectron charge distributions for each of the in-ice Hamamatsu Photonics R7081-02[MOD] photomultiplier tubes in the IceCube Neutrino Observatory. The characterization of the individual PMT charge distributions is important for PMT calibration, data and Monte Carlo simulation agreement, and understanding the effect of hardware differences within the detector. We discuss the single photoelectron identification procedure and how we extract the single-photoelectron charge distribution using a deconvolution of the multiple-photoelectron charge distribution., Published by Inst. of Physics, London
Published: 2020

44. Multimessenger search for sources of gravitational waves and high-energy neutrinos: Initial results for LIGO-Virgo and IceCube

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, T. Anderson, C. Arguelles, T. C. Arlen, J. Auffenberg, X. Bai, S. W. Barwick, V. Baum, J. J. Beatty, J. Becker Tjus, K.-H. Becker, S. BenZvi, P. Berghaus, D. Berley, E. Bernardini, A. Bernhard, D. Z. Besson, G. Binder, D. Bindig, M. Bissok, E. Blaufuss, J. Blumenthal, D. J. Boersma, C. Bohm, F. Bos, D. Bose, S. Böser, O. Botner, L. Brayeur, H.-P. Bretz, A. M. Brown, J. Casey, M. Casier, D. Chirkin, A. Christov, B. Christy, K. Clark, L. Classen, F. Clevermann, S. Coenders, D. F. Cowen, A. H. Cruz Silva, M. Danninger, J. Daughhetee, J. C. Davis, M. Day, J. P. A. M. de André, C. De Clercq, S. De Ridder, P. Desiati, K. D. de Vries, M. de With, T. DeYoung, J. C. Díaz-Vélez, M. Dunkman, R. Eagan, B. Eberhardt, B. Eichmann, J. Eisch, S. Euler, P. A. Evenson, O. Fadiran, A. R. Fazely, A. Fedynitch, J. Feintzeig, J. Felde, T. Feusels, K. Filimonov, C. Finley, T. Fischer-Wasels, S. Flis, A. Franckowiak, K. Frantzen, T. Fuchs, T. K. Gaisser, J. Gallagher, L. Gerhardt, D. Gier, L. Gladstone, T. Glüsenkamp, A. Goldschmidt, G. Golup, J. G. Gonzalez, J. A. Goodman, D. Góra, D. T. Grandmont, D. Grant, P. Gretskov, J. C. Groh, A. Groß, C. Ha, C. Haack, A. Haj Ismail, P. Hallen, A. Hallgren, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, D. Heinen, K. Helbing, R. Hellauer, D. Hellwig, S. Hickford, G. C. Hill, K. D. Hoffman, R. Hoffmann, A. Homeier, K. Hoshina, F. Huang, W. Huelsnitz, P. O. Hulth, K. Hultqvist, S. Hussain, A. Ishihara, E. Jacobi, J. Jacobsen, K. Jagielski, G. S. Japaridze, K. Jero, O. Jlelati, M. Jurkovic, B. Kaminsky, A. Kappes, T. Karg, A. Karle, M. Kauer, J. L. Kelley, A. Kheirandish, J. Kiryluk, J. Kläs, S. R. Klein, J.-H. Köhne, G. Kohnen, H. Kolanoski, A. Koob, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, A. Kriesten, K. Krings, G. Kroll, M. Kroll, J. Kunnen, N. Kurahashi, T. Kuwabara, M. Labare, D. T. Larsen, M. J. Larson, M. Lesiak-Bzdak, M. Leuermann, J. Leute, J. Lünemann, O. Macías, J. Madsen, G. Maggi, R. Maruyama, K. Mase, H. S. Matis, F. McNally, K. Meagher, M. Medici, A. Meli, T. Meures, S. Miarecki, E. Middell, E. Middlemas, N. Milke, J. Miller, L. Mohrmann, T. Montaruli, R. Morse, R. Nahnhauer, U. Naumann, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke, S. Odrowski, A. Olivas, A. Omairat, A. O’Murchadha, T. Palczewski, L. Paul, Ö. Penek, J. A. Pepper, C. Pérez de los Heros, C. Pfendner, D. Pieloth, E. Pinat, J. Posselt, P. B. Price, G. T. Przybylski, J. Pütz, M. Quinnan, L. Rädel, M. Rameez, K. Rawlins, P. Redl, I. Rees, R. Reimann, E. Resconi, W. Rhode, M. Richman, B. Riedel, S. Robertson, J. P. Rodrigues, M. Rongen, C. Rott, T. Ruhe, B. Ruzybayev, D. Ryckbosch, S. M. Saba, H.-G. Sander, J. Sandroos, M. Santander, S. Sarkar, K. Schatto, F. Scheriau, T. Schmidt, M. Schmitz, S. Schoenen, S. Schöneberg, A. Schönwald, A. Schukraft, L. Schulte, O. Schulz, D. Seckel, Y. Sestayo, S. 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Published: 2014
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45. Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data IceCube Collaboration

Author: M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A. Barbano, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, S. Böser, O. Botner, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, H.-P. Bretz, S. Bron, J. Brostean-Kaiser, A. Burgman, R. S. Busse, T. Carver, C. Chen, E. Cheung, D. Chirkin, K. Clark, L. Classen, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, J. P. A. M. de André, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, A. Diaz, J. C. Díaz-Vélez, H. Dujmovic, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, B. Eichmann, P. Eller, J. J. Evans, P. A. Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, A. Franckowiak, E. Friedman, A. Fritz, T. K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, K. Ghorbani, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, M. Günder, M. Gündüz, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, F. Henningsen, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, W. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J. L. Kelley, A. Kheirandish, J. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, G. Krückl, N. Kulacz, S. Kunwar, N. Kurahashi, A. Kyriacou, M. Labare, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, K. Leonard, M. Leuermann, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, J. Lünemann, W. Luszczak, J. Madsen, G. Maggi, K. B. M. Mahn, Y. Makino, K. Mallot, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, R. Maunu, K. Meagher, M. Medici, A. Medina, M. Meier, S. Meighen-Berger, T. Menne, G. Merino, T. Meures, S. Miarecki, J. Micallef, G. Momenté, T. Montaruli, R. W. Moore, M. Moulai, R. Nagai, R. Nahnhauer, P. Nakarmi, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. O’Murchadha, E. O’Sullivan, T. Palczewski, H. Pandya, D. V. Pankova, N. Park, P. Peiffer, C. Pérez de los Heros, D. Pieloth, E. Pinat, A. Pizzuto, M. Plum, P. B. Price, G. T. Przybylski, C. Raab, A. Raissi, M. Rameez, L. Rauch, K. Rawlins, I. C. Rea, R. Reimann, B. Relethford, G. Renzi, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, M. Silva, R. Snihur, J. Soedingrekso, D. Soldin, S. Söldner-Rembold, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, A. Stasik, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, M. Sutherland, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, B. Ty, E. Unger, M. A. Unland Elorrieta, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, T. B. Watson, C. Weaver, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, S. Westerhoff, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood, K. Woschnagg, G. Wrede, S. Wren, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, T. Yuan, and Collaboration, IceCube
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Field (physics), 010308 nuclear & particles physics, Oscillation, Sensitive analysis, Type (model theory), 7. Clean energy, 01 natural sciences, Measure (mathematics), Subatomär fysik, Upgrade, 0103 physical sciences, Subatomic Physics, Physique des particules élémentaires, Development (differential geometry), Neutrino, 010306 general physics, Engineering (miscellaneous)
Abstract: The Neutrino Mass Ordering (NMO) remains one of the outstanding questions in the field of neutrino physics. One strategy to measure the NMO is to observe matter effects in the oscillation pattern of atmospheric neutrinos above ∼1GeV, as proposed for several next-generation neutrino experiments. Moreover, the existing IceCube DeepCore detector can already explore this type of measurement. We present the development and application of two independent analyses to search for the signature of the NMO with three years of DeepCore data. These analyses include a full treatment of systematic uncertainties and a statistically-rigorous method to determine the significance for the NMO from a fit to the data. Both analyses show that the dataset is fully compatible with both mass orderings. For the more sensitive analysis, we observe a preference for normal ordering with a p-value of pIO= 15.3 % and CL s= 53.3 % for the inverted ordering hypothesis, while the experimental results from both analyses are consistent within their uncertainties. Since the result is independent of the value of δCP and obtained from energies Eν≳5GeV, it is complementary to recent results from long-baseline experiments. These analyses set the groundwork for the future of this measurement with more capable detectors, such as the IceCube Upgrade and the proposed PINGU detector., SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2020

46. A search for time-dependent astrophysical neutrino emission with IceCube data from 2012 to 2017

Author: Alexander Trettin, J. C. Gallagher, Gerrit Wrede, Federica Bradascio, S. Tilav, K. Rawlins, Alexander Burgman, C. J. Lozano Mariscal, K. Helbing, Thomas Huber, Ek Narayan Paudel, Allan Hallgren, J. P. Yanez, H. Dujmovic, D. Tosi, James Madsen, Lu Lu, P. Schlunder, Rasha Abbasi, B. J. Whelan, Won Nam Kang, D. Kang, Elisa Lohfink, X. Bai, I. Safa, A. Wallace, Surujhdeo Seunarine, R. Snihur, Juanan Aguilar, I. Taboada, Michael DuVernois, P. B. Price, Francesco Lucarelli, Merlin Schaufel, Michael O. Wolf, T. O. B. Schmidt, Sarah Mancina, Minjin Jeong, T. Glüsenkamp, Kurt Woschnagg, Simon Hauser, Paul Evenson, K. D. de Vries, Simone Garrappa, M. Meier, David Vannerom, Michael Campana, Dmitry Chirkin, Gerald Przybylski, Alexander Kappes, Jan Weldert, L. Halve, M. Ha Minh, Tobias Hoinka, R. Halliday, Antonio Augusto Alves Jr., A. Ishihara, K. Tollefson, A. Desai, Vedant Basu, Steve Sclafani, M. Stamatikos, B. J. P. Jones, Thomas Ehrhardt, J. Kiryluk, Alexander Sandrock, Kendall Mahn, Gisela Anton, Karl J. Clark, K. Andeen, Christian Haack, C. Pérez de los Heros, Jan Soedingrekso, Frank G. Schröder, Paras Koundal, Mike Richman, Andres Medina, Z. Griffith, A. Goldschmidt, George Japaridze, Saskia Philippen, Pablo Correa, D. Mockler, Simeon Reusch, Michael Kovacevich, Roger Moore, S. Yoshida, B. A. Clark, G. Krückl, Benjamin Hokanson-Fasig, D. Rysewyk Cantu, A. Obertacke Pollmann, U. Katz, K. Hoshina, D. Hebecker, J. Bourbeau, D. R. Nygren, Yang Lyu, Richard Naab, Grant Parker, Lenka Tomankova, Alejandro Diaz, N. van Eijndhoven, D. F. Cowen, Glenn Spiczak, Marek Kowalski, J. L. Kelley, Markus Ahlers, Spencer Axani, Aaron Fienberg, Daria Pankova, E. Friedman, M. Silva, Seongjin In, Elisa Resconi, Alessio Porcelli, E. O'Sullivan, Lisa Johanna Schumacher, Najia Moureen Binte Amin, C. Alispach, Amirreza Raissi, Janet Conrad, Stephanie Bron, Felix Henningsen, M. J. Larson, Le Viet Nguyen, Emily Dvorak, G. Momenté, M. Rameez, M. Prado Rodriguez, Pranav Dave, Carlos Arguelles, K. Wiebe, J. P. Lazar, Clara E. Hill, Erik Ganster, Shefali Shefali, Samvel Ter-Antonyan, A. Steuer, Chunfai Tung, D. B. Fox, Jessie Micallef, Chad Finley, Christoph Tönnis, Raamis Hussain, Abdul Rehman, Carsten Rott, Y. Popovych, K. Krings, Jenni Adams, K. Mase, Alexander A. Harnisch, S. Robertson, Joshua Hignight, R. Cross, Johannes Werthebach, Wing Yan Ma, James DeLaunay, Marjon Moulai, Simona Toscano, Benedikt Riedel, D. Seckel, M. Plum, Y. Makino, Alexander Fritz, D. Z. Besson, Javier Gonzalez, Roxanne Turcotte, M. J. Weiss, R. Morse, Jakob Bottcher, T. Montaruli, S. De Ridder, Xianwu Xu, J. Sandroos, Matthias Vraeghe, Christian Glaser, Brandom Pries, S. Hickford, Paul Coppin, Maximilian Karl Scharf, Xinyue Kang, Olga Botner, S. Kopper, J. Kim, René Reimann, Hermann Kolanoski, R. G. Stokstad, A. V. Balagopal, Andrea Turcati, J. Evans, C. De Clercq, Kael Hanson, U. Naumann, Claudio Kopper, A. Franckowiak, T. Stezelberger, Timo Karg, V. Baum, Leander Fischer, R. Joppe, Stef Verpoest, Jannis Necker, C. Lagunas Gualda, Chujie Chen, T. Gregoire, A. Weindl, Maryon Ahrens, Subir Sarkar, K. Meagher, William Luszczak, P. Peiffer, Daniel Bindig, G. H. Collin, Frederik Tenholt, R. Nagai, Johan Wulff, Timothyblake Watson, Paolo Desiati, C. Weaver, M. E. Huber, Sebastian Baur, Marcos Santander, Ramesh Koirala, Sebastian Fiedlschuster, Alan Coleman, David A. Williams, J. van Santen, J. Stettner, L. Gerhardt, A. Olivas, Konstancja Satalecka, E. Blaufuss, Alex Pizzuto, Markus Ackermann, Theo Glauch, S. W. Barwick, Elisa Bernardini, A. Kyriacou, L. Classen, Gary Binder, D. van Eijk, Sebastian Böser, F. Huang, Gerrit Roellinghoff, J. Becker Tjus, Mark Weyrauch, Kayla Leonard, Y. L. Li, Sukeerthi Dharani, Francis Halzen, J. Merz, Mirco Hunnefeld, Marie Oehler, I. Ansseau, Benjamin Bastian, Anastasia Maria Barbano, Juliana Stachurska, H. Dembinski, G. W. Sullivan, Max Renschler, James E. Braun, D. J. Koskinen, M. Kauer, Suyong Choi, E. Bourbeau, David Kappesser, Matti Jansson, N. Kurahashi, Spencer Griswold, Todor Stanev, C. Wendt, Maria Tselengidou, D. Soldin, Philipp Furst, Mehmet Gunduz, G. de Wasseige, R. Hoffmann, C. Walck, Thomas K. Gaisser, Agnieszka Leszczyńska, R. C. Bay, Tim Ruhe, Austin Schneider, A. Ludwig, H. Niederhausen, Juan Carlos Diaz-Velez, Ken'ichi Kin, J. J. Beatty, Tianlu Yuan, F. McNally, Emma C. Hettinger, Reina H. Maruyama, Summer Blot, Segev BenZvi, Spencer Klein, Kara Hoffman, Hershal Pandya, Wolfgang Rhode, Robert Stein, T. Anderson, John Hardin, Chiara Bellenghi, H. Schieler, Kirill Filimonov, Damian Pieloth, Ali Kheirandish, Jannes Brostean-Kaiser, Ben Smithers, M. U. Nisa, L. Köpke, Jean Pierre Twagirayezu, A. Haungs, Nahee Park, K. Hultqvist, Darren Grant, T. Kintscher, Frederik Hermann Lauber, Justin Lanfranchi, Christian Spiering, Justin Vandenbroucke, S. C. Nowicki, S. E. Sanchez Herrera, K.-H. Becker, Yiqian Xu, Matt Dunkman, Thomas Stuttard, Sarah Pieper, Dirk Ryckbosch, Stephan Meighen-Berger, Qinrui Liu, Martina Karl, Jochen M. Schneider, Srubabati Goswami, M. A. Unland Elorrieta, Martin Rongen, Zhedong Zhang, Ava Ghadimi, Franziska Tischbein, P. Mallik, P. Eller, Colin Turley, R. S. Busse, Christopher Wiebusch, Kunal Deoskar, A. Karle, Ioana Codrina Maris, Christoph Raab, Nadège Iovine, D. Berley, G. C. Hill, Bunheng Ty, Ralph Engel, Moritz Kellermann, Giovanni Renzi, S. Fahey, A. R. Fazely, Tyce DeYoung, Nathan Whitehorn, Immacolata Carmen Rea, Physics, Faculty of Sciences and Bioengineering Sciences, Elementary Particle Physics, and Vriendenkring VUB
Subjects: 010504 meteorology & atmospheric sciences, High-energy astronomy, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, model [emission], FOS: Physical sciences, Cosmic ray, Astrophysics, 01 natural sciences, law.invention, IceCube Neutrino Observatory, IceCube, blazar, law, emission [gamma ray], 0103 physical sciences, Cosmic ray sources, High-energy astrophysics, Particle astrophysics, energy: high [neutrino], Blazar, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Astroparticle physics, Physics, background, Astronomy and Astrophysics, Universe, messenger, observatory, Space and Planetary Science, ddc:520, time dependence, acceleration [cosmic radiation], Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Flare
Abstract: High-energy neutrinos are unique messengers of the high-energy universe, tracing the processes of cosmic ray acceleration. This paper presents analyses focusing on time-dependent neutrino point-source searches. A scan of the whole sky, making no prior assumption about source candidates, is performed, looking for a space and time clustering of high-energy neutrinos in data collected by the IceCube Neutrino Observatory between 2012 and 2017. No statistically significant evidence for a time-dependent neutrino signal is found with this search during this period, as all results are consistent with the background expectation. Within this study period, the blazar 3C 279, showed strong variability, inducing a very prominent gamma-ray flare observed in 2015 June. This event motivated a dedicated study of the blazar, which consists of searching for a time-dependent neutrino signal correlated with the gamma-ray emission. No evidence for a time-dependent signal is found. Hence, an upper limit on the neutrino fluence is derived, allowing us to constrain a hadronic emission model.
Published: 2020

47. 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

48. LeptonInjector and LeptonWeighter: A neutrino event generator and weighter for neutrino observatories

Author: Janet Conrad, R. Cross, D. Hebecker, William Luszczak, K.-H. Becker, Yiqian Xu, Matt Dunkman, Ioana Codrina Maris, Thomas Stuttard, Christian Spiering, Thomas Ehrhardt, Sarah Pieper, A. Kyriacou, Ken'ichi Kin, Christoph Raab, Nadège Iovine, Dirk Ryckbosch, S. De Ridder, Stephan Meighen-Berger, D. Berley, G. C. Hill, Bunheng Ty, Paul Coppin, Justin Vandenbroucke, Andrea Turcati, J. Becker Tjus, J. J. Beatty, Christian Haack, Tianlu Yuan, M. J. Larson, Ralph Engel, Moritz Kellermann, F. McNally, Wing Yan Ma, Emma C. Hettinger, Reina H. Maruyama, A. Obertacke Pollmann, Summer Blot, Frank G. Schröder, U. Katz, Giovanni Renzi, Damian Pieloth, Ali Kheirandish, T. Gregoire, James DeLaunay, Marjon Moulai, S. Fahey, M. Kauer, Tyce DeYoung, Abhishek Desai, J. Werthebach, D. B. Fox, J. van Santen, J. L. Kelley, Markus Ahlers, Suyong Choi, Alex Pizzuto, Jannes Brostean-Kaiser, Nathan Whitehorn, Immacolata Carmen Rea, David Kappesser, Jan Soedingrekso, Brandom Pries, L. Schumacher, Maximilian Karl Scharf, S. C. Nowicki, Gary Binder, Karl J. Clark, D. van Eijk, Shefali Shefali, P. B. Price, Matti Jansson, A. Franckowiak, Hermann Kolanoski, M. U. Nisa, Mehmet Gunduz, Agnieszka Leszczyńska, R. C. Bay, Abdul Rehman, Francesco Lucarelli, Carsten Rott, Chujie Chen, Austin Schneider, George Japaridze, Juan Carlos Diaz-Velez, Roger Moore, L. Köpke, Mark Weyrauch, Stef Verpoest, Aaron Fienberg, Timo Karg, D. Tosi, Y. L. Li, Amirreza Raissi, T. O. B. Schmidt, Paras Koundal, Mike Richman, N. van Eijndhoven, Erik Ganster, Y. Makino, P. Peiffer, Johan Wulff, A. Weindl, Segev BenZvi, Elisa Lohfink, Timothyblake Watson, J. Bourbeau, Nora Valtonen-Mattila, Michael Kovacevich, M. E. Huber, Spencer Klein, Javier Gonzalez, Roxanne Turcotte, Maryon Ahrens, Samvel Ter-Antonyan, Kurt Woschnagg, Marcos Santander, Richard Naab, S. Tilav, Daria Pankova, L. Gerhardt, G. Krückl, Konstancja Satalecka, A. Olivas, Alexander Fritz, D. Z. Besson, Stephanie Bron, E. Friedman, Paul Evenson, Frederik Tenholt, R. Nagai, C. De Clercq, C. Lagunas Gualda, Y. Popovych, C. J. Lozano Mariscal, C. Weaver, Martin Rongen, Theo Glauch, Alejandro Diaz, Michael DuVernois, Seongjin In, Elisa Resconi, Alessio Porcelli, H. Dujmovic, Matthias Vraeghe, Rasha Abbasi, B. J. Whelan, Kara Hoffman, J. Kim, G. W. Sullivan, James E. Braun, T. Kintscher, Simone Garrappa, Xianwu Xu, J. Sandroos, Dmitry Chirkin, Alexander Kappes, K. Rawlins, J. P. Yanez, G. H. Collin, J. Evans, Alan Coleman, David A. Williams, Markus Ackermann, S. W. Barwick, Philipp Furst, Zhedong Zhang, Ava Ghadimi, F. Huang, Emily Dvorak, Hershal Pandya, Frederik Hermann Lauber, R. S. Busse, Surujhdeo Seunarine, R. Snihur, K. Tollefson, E. O'Sullivan, R. Morse, Jakob Bottcher, T. Montaruli, Jan Weldert, Wolfgang Rhode, Robert Stein, Alexander Trettin, N. Kurahashi, Christopher Wiebusch, Kunal Deoskar, Juanan Aguilar, L. Halve, Franziska Tischbein, Justin Lanfranchi, M. Ha Minh, C. Wendt, P. Mallik, M. Stamatikos, K. Meagher, C. Pérez de los Heros, Gerald Przybylski, A. Karle, James Madsen, Chad Finley, Daniel Bindig, R. Halliday, B. J. P. Jones, G. de Wasseige, A. Wallace, Kayla Leonard, Ben Smithers, P. Eller, Simeon Reusch, Lu Lu, T. Anderson, J. C. Gallagher, A. Sharma, Sukeerthi Dharani, Christoph Tönnis, R. Hoffmann, John Hardin, Jean Pierre Twagirayezu, A. Ishihara, Tim Ruhe, A. Haungs, Rui An, Nahee Park, A. Ludwig, Francis Halzen, J. Merz, D. Rysewyk Cantu, C. Walck, Elisa Bernardini, Gerrit Wrede, T. Stanev, K. Hultqvist, Benedikt Riedel, D. Seckel, K. Mase, Andres Medina, Darren Grant, Benjamin Hokanson-Fasig, I. Ansseau, D. Mockler, Thomas Huber, Thomas K. Gaisser, Chiara Bellenghi, Yang Lyu, T. Glüsenkamp, Grant Parker, Jenni Adams, M. Meier, Michael Campana, H. Niederhausen, H. Schieler, Ek Narayan Paudel, Allan Hallgren, Colin Turley, Saskia Philippen, Juliana Stachurska, H. Dembinski, K. Helbing, A. Steuer, Kendall Mahn, A. Goldschmidt, Alexander A. Harnisch, Kirill Filimonov, Kael Hanson, Spencer Axani, Christian Glaser, K. Wiebe, Barbara Skrzypek, S. E. Sanchez Herrera, Stephen L. Hauser, M. J. Weiss, R. G. Stokstad, Lenka Tomankova, Carlos Arguelles, Jessie Micallef, Jannis Necker, Raamis Hussain, D. Kang, M. Silva, I. Taboada, Najia Moureen Binte Amin, Federica Bradascio, Alexander Burgman, J. P. Lazar, Michael O. Wolf, M. Prado Rodriguez, Clara E. Hill, S. Kopper, Paolo Desiati, K. D. de Vries, S. Hickford, I. Safa, Pranav Dave, René Reimann, Merlin Schaufel, Minjin Jeong, Leander Fischer, Qinrui Liu, R. Joppe, Martina Karl, Jochen M. Schneider, Srubabati Goswami, M. A. Unland Elorrieta, Sebastian Baur, Sebastian Fiedlschuster, D. R. Nygren, Marek Kowalski, Olga Botner, V. Baum, T. Stezelberger, S. Yoshida, Won Nam Kang, Sarah Mancina, X. Bai, Tobias Hoinka, Vedant Basu, Steve Sclafani, J. Kiryluk, K. Andeen, A.A. Alves, Alexander Sandrock, Pablo Correa, B. A. Clark, P. Schlunder, Sebastian Böser, Benjamin Bastian, Anastasia Maria Barbano, Gisela Anton, Max Renschler, Chunfai Tung, D. J. Koskinen, S. Robertson, E. Bourbeau, Joshua Hignight, Spencer Griswold, Maria Tselengidou, D. Soldin, Ramesh Koirala, E. Blaufuss, L. Classen, K. Hoshina, Glenn Spiczak, G. Momenté, M. Rameez, D. F. Cowen, U. Naumann, David Vannerom, Le Viet Nguyen, K. Krings, J. Stettner, M. Plum, Gerrit Roellinghoff, Mirco Hunnefeld, Marie Oehler, Z. Griffith, Xinyue Kang, Claudio Kopper, Subir Sarkar, Felix Henningsen, A. R. Fazely, Simona Toscano, C. Alispach, Physics, Faculty of Sciences and Bioengineering Sciences, Elementary Particle Physics, and Vriendenkring VUB
Subjects: Particle physics, Physics::Instrumentation and Detectors, Computer science, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, General Physics and Astronomy, CHERENKOV LIGHT YIELD, Weighting, 01 natural sciences, High Energy Physics - Experiment, 010305 fluids & plasmas, Standard Model, High Energy Physics - Experiment (hep-ex), Neutrino interaction, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, 010306 general physics, Cherenkov radiation, Event generator, Neutrino generator, Neutrino simulation, Generator (computer programming), hep-ex, Event (computing), ICE, High Energy Physics::Phenomenology, Detector, hep-ph, Computational Physics (physics.comp-ph), Quantitative Biology::Genomics, High Energy Physics - Phenomenology, physics.comp-ph, Hardware and Architecture, High Energy Physics::Experiment, Neutrino, Physics - Computational Physics, Lepton
Abstract: We present a high-energy neutrino event generator, called LeptonInjector, alongside an event weighter, called LeptonWeighter. Both are designed for large-volume Cherenkov neutrino telescopes such as IceCube. The neutrino event generator allows for quick and flexible simulation of neutrino events within and around the detector volume, and implements the leading Standard Model neutrino interaction processes relevant for neutrino observatories: neutrino-nucleon deep-inelastic scattering and neutrino-electron annihilation. In this paper, we discuss the event generation algorithm, the weighting algorithm, and the main functions of the publicly available code, with examples., Comment: 28 pages, 10 figures, 3 tables
Published: 2021

49. The IceCube realtime alert system

Author: B. J. P. Jones, Chris Wendt, S. Hickford, D. Tosi, M. Day, R. Konietz, M. Vehring, S. Coenders, Joshua Hignight, Francis Halzen, Karim Ghorbani, S. Seunarine, G. Merino, Spencer Axani, I. Ansseau, N. Wandkowsky, S. Schoenen, J. Kiryluk, M. Wolf, F. Bos, A. Terliuk, Sally Robertson, G. Krückl, Carlos Arguelles, M. Song, T. L. Carver, Mike Richman, H. Dembinski, Sebastian Böser, D. Heereman, P. Schlunder, R. Nahnhauer, M. Lesiak-Bzdak, Gisela Anton, V. di Lorenzo, Allan Hallgren, J. Tatar, M. J. Larson, Jae Yool Kim, M. Kauer, L. Classen, Kurt Woschnagg, T. Menne, Paul Evenson, L. Brayeur, C. Finley, Juanan Aguilar, Jenni Adams, Hrvoje Dujmovic, Janet Conrad, B. Relethford, Ignacio Taboada, A. Obertacke Pollmann, K. Rawlins, M. G. Aartsen, Michael Sutherland, K. Mase, T. Kittler, S. Flis, P. Peiffer, R. Cross, K. D. de Vries, George Japaridze, S. De Ridder, Dirk Lennarz, Konstancja Satalecka, Theo Glauch, M. Rongen, Gabriel Collin, Dmitry Chirkin, A. Franckowiak, D. Z. Besson, Marjon Moulai, James Madsen, Lu Lu, R. Maunu, E. Friedman, Alexander Kappes, R. G. Stokstad, Markus Ahlers, J. Kunnen, Jay Gallagher, T. Ehrhardt, N. van Eijndhoven, M. N. Tobin, A. Meli, C.-C. Fösig, M. van Rossem, M. Vraeghe, C. Haack, K. Meagher, Elisa Resconi, A. Steuer, Teresa Montaruli, M. J. Weiss, N. Kurahashi, B. J. Whelan, Todor Stanev, R. Hellauer, D. Bose, Kendall Mahn, N. L. Strotjohann, J. P. Dumm, M. Relich, A. Olivas, K. Helbing, T. Palczewski, H. Pandya, M. Bissok, K. Jero, A. Wallace, R. Reimann, E. Vogel, Maryon Ahrens, U. Katz, J. C. Díaz-Vélez, S. Kopper, E. Woolsey, G. Binder, Joshua Pepper, H. Niederhausen, Dawn Williams, F. Huang, M. Leuermann, G. de Wasseige, A. Turcati, U. Naumann, E. Hansen, M. E. Huber, B. Eberhardt, M. S. Kim, Samvel Ter-Antonyan, Aya Ishihara, D. Bindig, E. Jacobi, Elisa Bernardini, Segev BenZvi, G. Maggi, T. Schmidt, L. Wille, Y. Xu, J. Lünemann, M. Kowalski, S. E. Sanchez Herrera, Azadeh Keivani, Frederik Tenholt, M. Rameez, M. Medici, L. Gerhardt, D. F. Cowen, Albrecht Karle, S. Euler, T. Fuchs, T. Karg, Ch. Weaver, Alexander Burgman, W. Kang, Z. Griffith, S. Miarecki, J. van Santen, Kael Hanson, Thomas Meures, K. Krings, K. Clark, D. V. Pankova, F. McNally, G. W. Sullivan, M. Casier, B. Riedel, D. R. Nygren, S. Bron, Steven W. Barwick, M. Tselengidou, Thomas K. Gaisser, G. B. Yodh, Spencer Klein, A. Stasik, Stijn Vanheule, Philipp Eller, Maximilian Meier, T. Ruhe, S. Wickmann, J. Auffenberg, D. Hebecker, Paolo Desiati, A. Sandrock, T. Glüsenkamp, Gerald Przybylski, Minjin Jeong, G. Neer, T. Kintscher, Hermann Kolanoski, M. Labare, M. Quinnan, M. Dunkman, J. Felde, H. Taavola, Stijn Blot, Christian Spiering, S. Yoshida, Xinhua Bai, T. Hansmann, R. Hoffmann, Javier Gonzalez, M. Mandelartz, E. Blaufuss, Kara Hoffman, E. Pinat, Olga Botner, K. Wiebe, P. B. Price, V. Baum, D. J. Koskinen, D. Ryckbosch, Simona Toscano, M. Voge, Markus Ackermann, Donglian Xu, J. Becker Tjus, Ö. Penek, D. Soldin, L. Rädel, J. Stettner, Justin Vandenbroucke, K. Hoshina, E. del Pino Rosendo, Subir Sarkar, Glenn Spiczak, S. Schöneberg, K. H. Becker, E. Unger, D. Berley, W. Giang, J. L. Lanfranchi, Wolfgang Rhode, J. L. Kelley, S. In, S. C. Nowicki, L. Gladstone, R. Koirala, Darren Grant, J. P. A. M. de André, C. Walck, Sarah Mancina, Frederik Hermann Lauber, M. Börner, Klas Hultqvist, M. Zoll, K. Andeen, S. Westerhoff, A. Christov, M. Wallraff, T. Stezelberger, E. Cheung, M. Usner, L. Sabbatini, B. Eichmann, H.-P. Bretz, S. Tilav, Christian Bohm, Aongus O'Murchadha, J. P. Yanez, Christoph Raab, G. C. Hill, L. Schumacher, C. Krüger, A. Goldschmidt, R. C. Bay, D. Seckel, S. Fahey, S. Kunwar, M. Archinger, A. R. Fazely, Tyce DeYoung, P. A. Toale, M. Kroll, C. Kopper, J. Braun, T. R. Wood, J. J. Beatty, A. Bernhard, D. Rysewyk, A. Stößl, Reina H. Maruyama, Christopher Wiebusch, J. Feintzeig, Carsten Rott, Xianwu Xu, J. Sandroos, D. Altmann, C. Pérez de los Heros, R. Ström, T. Kuwabara, L. Wills, Damian Pieloth, Ali Kheirandish, L. Köpke, G. Kohnen, T. Anderson, C. De Clercq, G. Tešić, Kirill Filimonov, Physics, Elementary Particle Physics, Faculty of Sciences and Bioengineering Sciences, and Vriendenkring VUB
Subjects: HIGH-ENERGY NEUTRINOS, TELESCOPE, Astrophysics::High Energy Astrophysical Phenomena, Multi-messenger astronomy, Neutrino astronomy, Neutrino detectors, Transient sources, Astronomy and Astrophysics, pole, FOS: Physical sciences, 01 natural sciences, IceCube, law.invention, IceCube Neutrino Observatory, Telescope, SEARCHES, CORE-COLLAPSE SUPERNOVAE, law, Observatory, 0103 physical sciences, site, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, background, Event (computing), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, PERFORMANCE, sensitivity, observatory, Identification (information), electromagnetic, Physics and Astronomy, Neutrino detector, ddc:540, High Energy Physics::Experiment, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, FOLLOW-UP
Abstract: Following the detection of high-energy astrophysical neutrinos in 2013, their origin is still unknown. Aiming for the identification of an electromagnetic counterpart of a rapidly fading source, we have implemented a realtime analysis framework for the IceCube neutrino observatory. Several analyses selecting neutrinos of astrophysical origin are now operating in realtime at the detector site in Antarctica and are producing alerts to the community to enable rapid follow-up observations. The goal of these observations is to locate the astrophysical objects responsible for these neutrino signals. This paper highlights the infrastructure in place both at the South Pole detector site and at IceCube facilities in the north that have enabled this fast follow-up program to be developed. Additionally, this paper presents the first realtime analyses to be activated within this framework, highlights their sensitivities to astrophysical neutrinos and background event rates, and presents an outlook for future discoveries., Comment: 33 pages, 9 figures, Published in Astroparticle Physics
Published: 2017

50. Is there really a Hubble tension?

Author: M. Rameez and Subir Sarkar
Subjects: Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics and Astronomy (miscellaneous), media_common.quotation_subject, Cosmic distance ladder, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Rest frame, Type (model theory), Universe, Redshift, Galaxy, symbols.namesake, symbols, Peculiar velocity, Astrophysics::Galaxy Astrophysics, media_common, Hubble's law, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The heliocentric redshifts ($z_\mathrm{hel}$) reported for 150 Type Ia supernovae in the Pantheon compilation are significantly discrepant from their corresponding values in the JLA compilation. Both catalogues include corrections to the redshifts and magnitudes of the supernovae to account for the motion of the heliocentric frame relative to the `CMB rest frame', as well as corrections for the directionally coherent bulk motion of local galaxies with respect to this frame. The latter is done employing modelling of peculiar velocities which assume the $\Lambda$CDM cosmological model but nevertheless provide evidence for residual bulk flows which are discordant with this model (implying that the observed Universe is in fact anisotropic). Until recently such peculiar velocity corrections in the Pantheon catalogue were made at redshifts exceeding 0.2 although there is no data on which to base such corrections. We study the impact of these vexed issues on the 4.4 $\sigma$ discrepancy between the Hubble constant of $H_0 = 67.4 \pm 0.5$ km/s/Mpc inferred from observations of CMB anisotropies by Planck assuming $\Lambda$CDM, and the measurement of $H_0 = 73.5 \pm 1.4$ km/s/Mpc by the SH0ES project which extended the local distance ladder using Type Ia supernovae. Using the same methodology as the latter study we find that for supernovae whose redshifts are discrepant between Pantheon and JLA with $\Delta z_\mathrm{hel} > 0.0025$, the Pantheon redshifts favour $H_0 \simeq 72$ km/s/Mpc, while the JLA redshifts favour $H_0 \simeq 68$ km/s/Mpc. Thus the discrepancies between SNe Ia datasets are sufficient to undermine the claimed `Hubble tension'. We further note the systematic variation of $H_0$ by $\sim$ 6-9 km/s/Mpc across the sky seen in multiple datasets, implying that it cannot be measured locally to better than $\sim$ 10% in a model-independent manner., Comment: 12 pages, 3 figures, 1 table; Revised and expanded; To appear in CQG; Code available at: https://github.com/rameez3333/SN1aDataandH0
Published: 2019

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