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

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.

12 pages, 2 figures, minor changes, comments and references added, matches the published version

References in corpus (6)

• Atmospheric and Astrophysical Neutrinos above 1 TeV Interacting in IceCube
• On the Rates of Gamma Ray Bursts and Type Ib/c Supernovae
• High-energy Cosmic Rays and Neutrinos from Semi-relativistic Hypernovae
• Enhanced Cosmological GRB Rates and Implications for Cosmogenic Neutrinos
• Origin Of The High Energy Cosmic Neutrino Background
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• Probing decaying heavy dark matter with the 4-year IceCube HESE data
• Dark Matter interpretation of low energy IceCube MESE excess
• High-Energy Neutrino Emission from White Dwarf Mergers
• Detection prospects for high energy neutrino sources from the anisotropic matter distribution in the local universe