Gravitational scattering of spinning neutrinos by a rotating black hole with a slim magnetized accretion disk

Abstract We study neutrinos gravitationally scattered off a rotating supermassive black hole which is surrounded by thin accretion disk with realistic magnetic field. Neutrinos are supposed to be Dirac particles having nonzero moment. move along arbitrary trajectories, the incoming flux being parallel equatorial plane. exactly account for influence of both gravity and field on neutrino motion its spin evolution. The general statement that helicity an ultrarelativistic constant in particle scattering gravitational proven within quasiclassical approach. find measurable fluxes outgoing taking into precession external curved spacetime. These turn out significantly suppressed some parameters system. Finally, we discuss possibility observe predicted phenomena core-collapsing supernova our Galaxy.