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Estimating the contribution of Galactic sources to the diffuse neutrino flux

Anchordoqui, Luis A.; Goldberg, Haim; Paul, Thomas C. +2 more

Motivated by recent IceCube observations we reexamine the idea that microquasars are high energy neutrino emitters. By stretching to the maximum the parameters of the Fermi engine we show that the nearby high-mass x-ray binary LS 5039 could accelerate protons up to above about 20 PeV. These highly relativistic protons could subsequently interact w…