articlePhysical Review LettersSep 2, 2014BRONZE OA

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

The University of Adelaide · University of Canterbury · +38 more institutions

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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(-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.…

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Topics & keywords

Keywords
  • Neutrino
  • Physics
  • Nuclear physics
  • Energy (signal processing)
  • Neutrino detector
  • Astronomy
  • Particle physics
  • Astrophysics
UN Sustainable Development Goals
  • Affordable and clean energy
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