PeV neutrinos from interactions of cosmic rays with the interstellar medium in the Galaxy
Abstract
We present a self-consistent interpretation of the of very-high-energy neutrino signal from the direction of the inner Galaxy, which is a part of the astronomical neutrino signal reported by IceCube. We demonstrate that an estimate of the neutrino flux in the E>100 TeV energy range lies at the high-energy power-law extrapolation of the spectrum of diffuse gamma-ray emission from the Galactic Ridge, as observed by Fermi telescope. This suggests that IceCube neutrino and Fermi/LAT gamma-ray fluxes are both produced in interactions of cosmic rays with the interstellar medium in the Norma arm and/or in the Galactic Bar. Cosmic rays responsible for the gamma-ray and neutrino flux are characterised by hard spectrum with the slope harder than -2.4 and cut-off energy higher than 10 PeV.
Keywords
Cite
@article{arxiv.1307.2158,
title = {PeV neutrinos from interactions of cosmic rays with the interstellar medium in the Galaxy},
author = {A. Neronov and D. V. Semikoz and C. Tchernin},
journal= {arXiv preprint arXiv:1307.2158},
year = {2014}
}
Comments
6pages, 4 figures