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.

Originalsprog	Engelsk
Artikelnummer	101101
Tidsskrift	Physical Review Letters
Vol/bind	113
Udgave nummer	10
Antal sider	8
ISSN	0031-9007
DOI	https://doi.org/10.1103/PhysRevLett.113.101101
Status	Udgivet - 2 sep. 2014

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10.1103/PhysRevLett.113.101101

PRL113(2014)101101

http://inspirehep.net/record/1297349

Citationsformater

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.",

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AU - Aartsen, M.G.

AU - Ackermann, M.

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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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.

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DO - 10.1103/PhysRevLett.113.101101

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JF - Physical Review Letters

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

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