Implications of Fermi-LAT observations on the origin of IceCube neutrinos

Abstract

The IceCube (IC) collaboration recently reported the detection of TeV-PeV extraterrestrial neutrinos whose origin is yet unknown. By the photon-neutrino connection in $pp$ and $p\gamma$ interactions, we use the \fermi-LAT observations to constrain the origin of the IC detected neutrinos. We find that Galactic origins, i.e., the diffuse Galactic neutrinos due to cosmic ray (CR) propagation in the Milky Way, and the neutrinos from the Galactic point sources, may not produce the IC neutrino flux, thus these neutrinos should be of extragalactic origin. Moreover, the extragalactic gamma-ray bursts (GRBs) may not account for the IC neutrino flux, the jets of active galactic nuclei may not produce the IC neutrino spectrum, but the starburst galaxies (SBGs) may be promising sources. As suggested by the consistency between the IC detected neutrino flux and the Waxman-Bahcall bound, GRBs in SBGs may be the sources of both the ultrahigh energy, $>10^{19}$eV, CRs and the $1-100$~PeV CRs that produce the IC detected TeV-PeV neutrinos.

arXiv commentJCAP accepted version; 8 pages, 2 figs; discussion on blazar origin added; conclusion unchanged

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• Searching for MeV-Scale Gauge Bosons with IceCube
• Analysis of the 4-year IceCube high-energy starting events
• Pairwise sums in colourings of the reals
• IceCube Events from Heavy DM decays through the Right-handed Neutrino Portal
• Star-forming galaxies as the origin of the IceCube PeV neutrinos
• A Multi-Component Model for the Observed Astrophysical Neutrinos
• Do high energy astrophysical neutrinos trace star formation?
• High-energy emitting BL Lacs and high-energy neutrinos - Prospects for the direct association with IceCube and KM3NeT
• Can FSRQs produce the IceCube detected diffuse neutrino emission?
• Constraints on cosmic ray loading and PeV neutrino production in blazars
• Search for GeV and X-ray flares associated with the IceCube track-like neutrinos
• PeV neutrinos from wind breakouts of type II supernovae
• Neutrinos from gamma-ray bursts: propagation of cosmic rays in their host galaxies