Journal
PHYSICAL REVIEW D
Volume 89, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.89.103002
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Funding
- Swiss National Science Foundation
- [RFBR 13-02-12175-ofi-m]
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We present a self-consistent interpretation of the 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 the 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 characterized by a hard spectrum with the slope harder than -2.4 and cutoff energy higher than 10 PeV.
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