Galactic PeV Neutrinos

Abstract

IceCube experiment has detected two neutrinos with energies beween 1-10 PeV. They might have originated from Galactic or extragalactic sources of cosmic rays. In the present work we consider hadronic interactions of the diffuse very high energy cosmic rays with the interstellar matter within our Galaxy to explain the PeV neutrino events detected in IceCube. We also expect PeV gamma ray events along with the PeV neutrino events if the observed PeV neutrinos were produced within our Galaxy in hadronic interactions. PeV gamma rays are unlikely to reach us from sources outside our Galaxy due to pair production with cosmic background radiations. We suggest that in future with simultaneous detections of PeV gamma rays and neutrinos it would be possible to distinguish between Galactic and extragalactic origins of very high energy neutrinos.

5 pages, version to be published in Astroparticle Physics

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• Demystifying the PeV Cascades in IceCube: Less (Energy) is More (Events)
• Galactic Neutrinos in the TeV to PeV Range
• The Galactic Center Origin of a Subset of IceCube Neutrino Events
• Cosmic-Ray Neutrinos from the Decay of Long-Lived Particle and the Recent IceCube Result
• Searching for MeV-Scale Gauge Bosons with IceCube
• Analysis of the 4-year IceCube high-energy starting events
• IceCube astrophysical neutrinos without a spectral cutoff and (10^15-10^17) eV cosmic gamma radiation
• Constraints on the models of the origin of high-energy astrophysical neutrinos
• Probing decaying heavy dark matter with the 4-year IceCube HESE data
• Boosted Dark Matter and its implications for the features in IceCube HESE data
• Implications of Fermi-LAT observations on the origin of IceCube neutrinos
• Estimates of the cosmic gamma-ray flux at PeV to EeV energies from the EAS-MSU experiment data
• Probing LHAASO Galactic PeVatrons through gamma-ray and neutrino correspondence
• Searching for PeV neutrinos from photomeson interactions in magnetars
• Report from the Multi-Messenger Working Group at UHECR-2014 Conference
• Very High Energy Antineutrinos from Photo-disintegration of Cosmic Ray Nuclei