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# Atmospheric and astrophysical neutrinos above 1 TeV interacting in IceCube

MG Aartsen, et al.
(2015) 91(2).
Author
Organization
Project
IceCube
Abstract
The IceCube Neutrino Observatory was designed primarily to search for high-energy (TeV-PeV) neutLrinos produced in distant astrophysical objects. A search for. greater than or similar to 100 TeV neutrinos interacting inside the instrumented volume has recently provided evidence for an isotropic flux of such neutrinos. At lower energies, IceCube collects large numbers of neutrinos from the weak decays of mesons in cosmic-ray air showers. Here we present the results of a search for neutrino interactions inside IceCube's instrumented volume between 1 TeV and 1 PeV in 641 days of data taken from 2010-2012, lowering the energy threshold for neutrinos from the southern sky below 10 TeV for the first time, far below the threshold of the previous high-energy analysis. Astrophysical neutrinos remain the dominant component in the southern sky down to a deposited energy of 10 TeV. From these data we derive new constraints on the diffuse astrophysical neutrino spectrum, Phi(v) = 2.06(-0.3)(+0.4) x 10(-18) (E-v = 10(5) GeV)-2.46 +/- 0.12GeV-1 cm(-2) sr(-1) s(-1) for 25 TeV < E-v < 1.4 PeV, as well as the strongest upper limit yet on the flux of neutrinos from charmed-meson decay in the atmosphere, 1.52 times the benchmark theoretical prediction used in previous IceCube results at 90% confidence.
Keywords
BLAZARS, ASTRONOMY, PERFORMANCE, AMANDA, GAMMA-RAY, PROMPT LEPTONS, INDUCED CASCADES, FLUX PREDICTIONS, HIGH-ENERGY NEUTRINOS, SEARCH

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## Citation

Chicago
Aartsen, MG, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, D Altmann, et al. 2015. “Atmospheric and Astrophysical Neutrinos Above 1 TeV Interacting in IceCube.” Physical Review D 91 (2).
APA
Aartsen, M., Ackermann, M., Adams, J., Aguilar, J., Ahlers, M., Ahrens, M., Altmann, D., et al. (2015). Atmospheric and astrophysical neutrinos above 1 TeV interacting in IceCube. PHYSICAL REVIEW D, 91(2).
Vancouver
1.
Aartsen M, Ackermann M, Adams J, Aguilar J, Ahlers M, Ahrens M, et al. Atmospheric and astrophysical neutrinos above 1 TeV interacting in IceCube. PHYSICAL REVIEW D. 2015;91(2).
MLA
Aartsen, MG, M Ackermann, J Adams, et al. “Atmospheric and Astrophysical Neutrinos Above 1 TeV Interacting in IceCube.” PHYSICAL REVIEW D 91.2 (2015): n. pag. Print.
```@article{5879031,
abstract     = {The IceCube Neutrino Observatory was designed primarily to search for high-energy (TeV-PeV) neutLrinos produced in distant astrophysical objects. A search for. greater than or similar to 100 TeV neutrinos interacting inside the instrumented volume has recently provided evidence for an isotropic flux of such neutrinos. At lower energies, IceCube collects large numbers of neutrinos from the weak decays of mesons in cosmic-ray air showers. Here we present the results of a search for neutrino interactions inside IceCube's instrumented volume between 1 TeV and 1 PeV in 641 days of data taken from 2010-2012, lowering the energy threshold for neutrinos from the southern sky below 10 TeV for the first time, far below the threshold of the previous high-energy analysis. Astrophysical neutrinos remain the dominant component in the southern sky down to a deposited energy of 10 TeV. From these data we derive new constraints on the diffuse astrophysical neutrino spectrum, Phi(v) = 2.06(-0.3)(+0.4) x 10(-18) (E-v = 10(5) GeV)-2.46 +/- 0.12GeV-1 cm(-2) sr(-1) s(-1) for 25 TeV {\textlangle} E-v {\textlangle} 1.4 PeV, as well as the strongest upper limit yet on the flux of neutrinos from charmed-meson decay in the atmosphere, 1.52 times the benchmark theoretical prediction used in previous IceCube results at 90\% confidence.},
articleno    = {022001},
author       = {Aartsen, MG and Ackermann, M and Adams, J and Aguilar, JA and Ahlers, M and Ahrens, M and Altmann, D and Anderson, T and Arguelles, C and Arlen, TC and Auffenberg, J and Bai, X and Barwick, SW and Baum, V and Bay, R and Beatty, JJ and Tjus, JB and Becker, KH and BenZvi, S and Berghaus, P and Berley, D and Bernardini, E and Bernhard, A and Besson, DZ and Binder, G and Bindig, D and Bissok, M and Blaufuss, E and Blumenthal, J and Boersma, DJ and Bohm, C and Bos, F and Bose, D and Boser, S and Botner, O and Brayeur, L and Bretz, HP and Brown, AM and Buzinsky, N and Casey, J and Casier, M and Cheung, E and Chirkin, D and Christov, A and Christy, B and Clark, K and Classen, L and Clevermann, F and Coenders, S and Cowen, DF and Silva, AHC and Danninger, M and Daughhetee, J and Davis, JC and Day, M and De Andre, JPAM and De Clercq, C and De Ridder, Sam and Desiati, P and De Vries, KD and De With, M and DeYoung, T and Diaz-Velez, JC and Dunkman, M and Eagan, R and Eberhardt, B and Eichmann, B and Eisch, J and Euler, S and Evenson, PA and Fadiran, O and Fazely, AR and Fedynitch, A and Feintzeig, J and Felde, J and Feusels, Tom and Filimonov, K and Finley, C and Fischer-Wasels, T and Flis, S and Franckowiak, A and Frantzen, K and Fuchs, T and Gaisser, TK and Gaior, R and Gallagher, J and Gerhardt, L and Gier, D and Gladstone, L and Glusenkamp, T and Goldschmidt, A and Golup, G and Gonzalez, JG and Goodman, JA and Gora, D and Grant, D and Gretskov, P and Groh, JC and Gross, A and Ha, C and Haack, C and Haj Ismail, Abd Al Karim and Hallen, P and Hallgren, A and Halzen, F and Hanson, K and Hebecker, D and Heereman, D and Heinen, D and Helbing, K and Hellauer, R and Hellwig, D and Hickford, S and Hill, GC and Hoffman, KD and Hoffmann, R and Homeier, A and Hoshina, K and Huang, F and Huelsnitz, W and Hulth, PO and Hultqvist, K and Hussain, S and Ishihara, A and Jacobi, E and Jacobsen, J and Jagielski, K and Japaridze, GS and Jero, K and Jlelati, Ola and Jurkovic, M and Kaminsky, B and Kappes, A and Karg, T and Karle, A and Kauer, M and Keivani, A and Kelley, JL and Kheirandish, A and Kiryluk, J and Klas, J and Klein, SR and Kohne, JH and Kohnen, G and Kolanoski, H and Koob, A and Kopke, L and Kopper, C and Kopper, S and Koskinen, DJ and Kowalski, M and Kriesten, A and Krings, K and Kroll, G and Kroll, M and Kunnen, J and Kurahashi, N and Kuwabara, T and Labare, Mathieu and Larsen, DT and Larson, MJ and Lesiak-Bzdak, M and Leuermann, M and Leute, J and Lunemann, J and Madsen, J and Maggi, G and Maruyama, R and Mase, K and Matis, HS and Maunu, R and McNally, F and Meagher, K and Medici, M and Meli, Athina and Meures, T and Miarecki, S and Middell, E and Middlemas, E and Milke, N and Miller, J and Mohrmann, L and Montaruli, T and Morse, R and Nahnhauer, R and Naumann, U and Niederhausen, H and Nowicki, SC and Nygren, DR and Obertacke, A and Odrowski, S and Olivas, A and Omairat, A and O'Murchadha, A and Palczewski, T and Paul, L and Penek, O and Pepper, JA and Heros, CPD and Pfendner, C and Pieloth, D and Pinat, E and Posselt, J and Price, PB and Przybylski, GT and Putz, J and Quinnan, M and Radel, L and Rameez, M and Rawlins, K and Redl, P and Rees, I and Reimann, R and Relich, M and Resconi, E and Rhode, W and Richman, M and Riedel, B and Robertson, S and Rodrigues, JP and Rongen, M and Rott, C and Ruhe, T and Ruzybayev, B and Ryckbosch, Dirk and Saba, SM and Sander, HG and Sandroos, J and Santander, M and Sarkar, S and Schatto, K and Scheriau, F and Schmidt, T and Schmitz, M and Schoenen, S and Schoneberg, S and Schonwald, A and Schukraft, A and Schulte, L and Schulz, O and Seckel, D and Sestayo, Y and Seunarine, S and Shanidze, R and Smith, MWE and Soldin, D and Spiczak, GM and Spiering, C and Stamatikos, M and Stanev, T and Stanisha, NA and Stasik, A and Stezelberger, T and Stokstad, RG and Stossl, A and Strahler, EA and Strom, R and Strotjohann, NL and Sullivan, GW and Taavola, H and Taboada, I and Tamburro, A and Tepe, A and Ter-Antonyan, S and Terliuk, A and Tesic, G and Tilav, S and Toale, PA and Tobin, MN and Tosi, D and Tselengidou, M and Unger, E and Usner, M and Vallecorsa, S and van Eijndhoven, N and Vandenbroucke, J and van Santen, J and Vehring, M and Voge, M and Vraeghe, Matthias and Walck, C and Wallraff, M and Weaver, C and Wellons, M and Wendt, C and Westerhoff, S and Whelan, BJ and Whitehorn, N and Wichary, C and Wiebe, K and Wiebusch, CH and Williams, DR and Wissing, H and Wolf, M and Wood, TR and Woschnagg, K and Xu, DL and Xu, XW and Yanez, JP and Yodh, G and Yoshida, S and Zarzhitsky, P and Ziemann, J and Zierke, S and Zoll, M},
issn         = {1550-7998},
journal      = {PHYSICAL REVIEW D},
language     = {eng},
number       = {2},
pages        = {16},
title        = {Atmospheric and astrophysical neutrinos above 1 TeV interacting in IceCube},
url          = {http://dx.doi.org/10.1103/PhysRevD.91.022001},
volume       = {91},
year         = {2015},
}

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