Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data

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; David Jason Koskinen; Michael James Larson; Subir Sarkar

doi:10.1103/PhysRevLett.113.101101

Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data

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, David Jason Koskinen, Michael James Larson, Subir Sarkar

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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 10-8GeVcm-2s-1sr-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.

Original language	English
Article number	101101
Journal	Physical Review Letters
Volume	113
Issue number	10
Number of pages	8
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.113.101101
Publication status	Published - 2 Sept 2014

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10.1103/PhysRevLett.113.101101

PRL113(2014)101101

http://inspirehep.net/record/1297349

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Aartsen, M. G., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Ahrens, M., Altmann, D., Anderson, T., Arguelles, C., Arlen, T. C., Auffenberg, J., Koskinen, D. J., Larson, M. J., & Sarkar, S. (2014). Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data. Physical Review Letters, 113(10), [101101]. https://doi.org/10.1103/PhysRevLett.113.101101

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title = "Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data",

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 10-8GeVcm-2s-1sr-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.",

author = "M.G. Aartsen and M. Ackermann and J. Adams and J.A. Aguilar and M. Ahlers and M. Ahrens and D. Altmann and T. Anderson and C. Arguelles and T.C. Arlen and J. Auffenberg and Koskinen, {David Jason} and Larson, {Michael James} and Subir Sarkar",

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AU - Aartsen, M.G.

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AU - Adams, J.

AU - Aguilar, J.A.

AU - Ahlers, M.

AU - Ahrens, M.

AU - Altmann, D.

AU - Anderson, T.

AU - Arguelles, C.

AU - Arlen, T.C.

AU - Auffenberg, J.

AU - Koskinen, David Jason

AU - Larson, Michael James

AU - Sarkar, Subir

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N2 - 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 10-8GeVcm-2s-1sr-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.

AB - 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 10-8GeVcm-2s-1sr-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.

U2 - 10.1103/PhysRevLett.113.101101

DO - 10.1103/PhysRevLett.113.101101

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JO - Physical Review Letters

JF - Physical Review Letters

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Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data

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