Fluxes of diffuse gamma rays and neutrinos from cosmic-ray interactions with circumgalactic gas
High Energy Astrophysical Phenomena
2016-10-05 v2
Abstract
The Milky Way is surrounded by a gravitationally bound gas corona extending up to the Galaxy's virial radius. Interactions of cosmic-ray particles with this gas give rise to energetic secondary gamma rays and neutrinos. We present a quantitative analysis of the neutrino and gamma-ray fluxes from the corona of the Milky Way together with a combined contribution of coronae of other galaxies. The high-energy neutrino flux is insufficient to explain the IceCube results, while the contribution to the FERMI-LAT diffuse gamma-ray flux is not negligible.
Keywords
Cite
@article{arxiv.1608.07421,
title = {Fluxes of diffuse gamma rays and neutrinos from cosmic-ray interactions with circumgalactic gas},
author = {Oleg Kalashev and Sergey Troitsky},
journal= {arXiv preprint arXiv:1608.07421},
year = {2016}
}
Comments
17 pages, 7 figures, revtex. V2: minor changes, version accepted by PRD