PeV neutrinos from interactions of cosmic rays with the interstellar medium in the Galaxy

A. Neronov; D. V. Semikoz; C. Tchernin

doi:10.1103/physrevd.89.103002

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arXiv · 1307.2158

PeV neutrinos from interactions of cosmic rays with the interstellar medium in the Galaxy

A. Neronov·D. V. Semikoz·C. Tchernin

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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.

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A. Neronov, D. V. Semikoz, C. Tchernin. 2014-05-30. PeV neutrinos from interactions of cosmic rays with the interstellar medium in the Galaxy. https://doi.org/10.1103/physrevd.89.103002

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