Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101055
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Type: Journal article
Title: Observation of high-energy astrophysical neutrinos in three years of IceCube data
Author: Aartsen, M.
Ackermann, M.
Adams, J.
Aguilar, J.
Ahlers, M.
Ahrens, M.
Altmann, D.
Anderson, T.
Arguelles, C.
Arlen, T.
Auffenberg, J.
Bai, X.
Barwick, S.
Baum, V.
Beatty, J.
Becker Tjus, J.
Becker, K.
Benzvi, S.
Berghaus, P.
Berley, D.
et al.
Citation: Physical Review Letters, 2014; 113(10):101101-1-101101-8
Publisher: American Physical Society
Issue Date: 2014
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
M. G. Aartsen ... S. Robertson ... B. J. Whelan ... et al. (IceCube Collaboration)
Abstract: A search for high-energy neutrinos interacting within the IceCube detector between 2010 and 2012 provided the first evidence for a high-energy neutrino flux of extraterrestrial origin. Results from an analysis using the same methods with a third year (2012–2013) of data from the complete IceCube detector are consistent with the previously reported astrophysical flux in the 100 TeV–PeV range at the level of 10−8  GeV cm−2 s−1 sr−1 per flavor and reject a purely atmospheric explanation for the combined three-year data at 5.7σ. The data are consistent with expectations for equal fluxes of all three neutrino flavors and with isotropic arrival directions, suggesting either numerous or spatially extended sources. The three-year data set, with a live time of 988 days, contains a total of 37 neutrino candidate events with deposited energies ranging from 30 to 2000 TeV. The 2000-TeV event is the highest-energy neutrino interaction ever observed.
Keywords: IceCube Collaboration
Rights: © 2014 American Physical Society
RMID: 0030017552
DOI: 10.1103/PhysRevLett.113.101101
Appears in Collections:Chemistry and Physics publications

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