Neutrinos scattered by a black hole's accretion disk undergo non-negligible spin flip from the toroidal magnetic field alone, contrary to earlier studies.
Spin oscillations in neutrino gravitational scattering
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abstract
We study neutrino spin oscillations while the particles scatter off a rotating black hole surrounded by a thick magnetized accretion disk. Neutrino spin precession is caused by the interaction of the neutrino magnetic moment with the magnetic field in the disk which has both toroidal and poloidal components. Our calculation of the observed neutrino fluxes, accounting for spin oscillations, are based on numerical simulations of the propagation of a great number of incoming test particles using High Performance Parallel Computing. The obtained results significantly improve our previous findings. We briefly discuss the applications for the observations of astrophysical neutrinos.
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Neutrino spin oscillations near a black hole
Neutrinos scattered by a black hole's accretion disk undergo non-negligible spin flip from the toroidal magnetic field alone, contrary to earlier studies.