TeV neutrinos from microquasars in compact massive binaries

We consider a compact binary system in which a Wolf-Rayet star supplies matter to a stellar mass black hole or a neutron star. This matter forms an accretion disk that ejects a jet like those observed in Galactic microquasars. Apart of the jet kinetic energy, typically similar to 10%, can be transferred to relativistic nuclei. These nuclei lose nucleons as a result of the photodisintegration process in collisions with thermal photons from the accretion disk and the massive star. As a result of the head-on photon-nucleus collisions, most of the neutrons released from the nuclei move toward the surface of the accretion disk and/or the massive star producing neutrinos in collisions with the matter. We calculate the spectra of muon neutrinos and expected neutrino event rates for a 1 km(3) neutrino detector of the IceCube type from a microquasar inside our Galaxy by applying, as an example, the parameters of the Cyg X-3 binary system. Such a model predicts up to several neutrino events per kilometer(3) per year from Cyg X-3, provided that nuclei are accelerated to the Lorentz factors above 10(6) with a power-law spectrum with an index close to 2.