http://arxiv.org/abs/2206.00042
We study neutrinos gravitationally scattered off a rotating supermassive black hole which is surrounded by a thin accretion disk with a realistic magnetic field. Neutrinos are supposed to be Dirac particles having a nonzero magnetic moment. Neutrinos, while being scattered, move along arbitrary trajectories not restricted by the equatorial plane. We exactly account for the influence of both gravity and magnetic field on the neutrino motion and its spin evolution. We find the measurable fluxes of outgoing neutrinos taking into account the neutrino spin precession in the external field in curved spacetime. These fluxes turn out to be significantly suppressed for some parameters of the system. Finally, we discuss the possibility to observe the predicted phenomena for core-collapsing supernova neutrinos in our Galaxy.
M. Dvornikov
Thu, 2 Jun 22
27/57
Comments: 13 pages in LaTeX2e, 7 eps figures