Diffuse neutrinos from extragalactic supernova remnants: Dominating the 100 TeV IceCube flux
arXiv:1501.02615 · doi:10.1016/j.physletb.2015.04.032
Abstract
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.
arXiv comment12 pages, 2 figures, minor changes, comments and references added, matches the published version
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