Origin Of The High Energy Cosmic Neutrino Background

TL;DR

This paper discusses the origins of the high energy cosmic neutrino background, suggesting it results from cosmic ray interactions within the galaxy and near sources like gamma-ray bursts, as observed by IceCube.

Contribution

It proposes a comprehensive explanation for the high energy neutrino background involving multiple astrophysical sources and interactions, integrating recent IceCube observations.

Findings

Neutrino background consistent with cosmic ray interactions in the galaxy

Contribution from hadronic interactions near sources like GRBs

Supports cosmic ray acceleration in gamma-ray burst jets

Abstract

The diffuse background of very high energy extra-terrestrial neutrinos recently discovered with IceCube is compatible with that expected from cosmic ray interactions in the Galactic interstellar medium plus that expected from hadronic interactions near source and in the intergalactic medium of the cosmic rays which have been accelerated by the jets that produce gamma ray bursts (GRBs).