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• W3102858634 abstract "Abstract Spin oscillations of neutrinos, gravitationally scattered off a black hole (BH), are studied. The cases of nonrotating and rotating BHs are analyzed. We derive the analytic expressions for the transition and survival probabilities of spin oscillations when neutrinos interact with these gravitational backgrounds. The obtained transition probabilities depend on the impact parameter, as well as the neutrino energy and the particle mass. We find that there is a possibility of spin oscillations of ultrarelativistic neutrinos scattering off a rotating BH. Then, considering the neutrino scattering off BH surrounded by background matter, we derive the effective Schrödinger equation for spin oscillations. The numerical solution of this equation is obtained in the case of a supermassive BH with a realistic accretion disk. Spin effects turn out to be negligible in the neutrino scattering in the Schwarzschild metric. In the Kerr metric, we find that the observed neutrino fluxes can be reduced almost 10% because of spin oscillations when ultrarelativistic neutrinos experience gravitational scattering. The neutrino interaction with an accretion disk results in the additional modification of the intensities of outgoing neutrino fluxes. We consider the applications of the obtained results for the neutrino astronomy." @default.
• W3102858634 created "2020-11-23" @default.
• W3102858634 creator A5008461534 @default.
• W3102858634 date "2020-05-01" @default.
• W3102858634 modified "2023-09-27" @default.
• W3102858634 title "Spin oscillations of neutrinos scattered off a rotating black hole" @default.
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• W3102858634 doi "https://doi.org/10.1140/epjc/s10052-020-8046-z" @default.
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