Diffuse neutrinos from extragalactic supernova remnants: Dominating the 100 TeV IceCube flux

Jan 12, 2015
5 pages
Published in:
  • Phys.Lett.B 745 (2015) 35-39
  • Published: Apr 21, 2015
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Abstract: (Elsevier)
IceCube has measured a diffuse astrophysical flux of TeV–PeV neutrinos. The most plausible sources are unique high energy cosmic ray accelerators like hypernova remnants (HNRs) and remnants from gamma ray bursts in star-burst galaxies, which can produce primary cosmic rays with the required energies and abundance. In this case, however, ordinary supernova remnants (SNRs), which are far more abundant than HNRs, produce a comparable or larger neutrino flux in the ranges up to 100–150 TeV energies, implying a spectral break in the IceCube signal around these energies. The SNRs contribution in the diffuse flux up to these hundred TeV energies provides a natural baseline and then constrains the expected PeV flux.
Note:
  • 12 pages, 2 figures, minor changes, comments and references added, matches the published version
  • neutrino: flux
  • cosmic radiation: energy
  • neutrino: supernova
  • energy: high
  • cosmic radiation: primary
  • cosmic radiation: acceleration
  • gamma ray: burst
  • IceCube
  • supernova
  • hypernova