Neutrino spin oscillations near a black hole

TL;DR

This paper investigates how neutrino spins oscillate when neutrinos are gravitationally scattered by a rotating Kerr black hole surrounded by a magnetized accretion disk, using numerical simulations to analyze the effects.

Contribution

It introduces a numerical simulation approach to study neutrino spin oscillations influenced by magnetic fields near a Kerr black hole, considering a thick magnetized accretion disk.

Findings

Neutrino spin precession is affected by the magnetic field in the accretion disk.

Numerical simulations reveal the behavior of neutrino fluxes near black holes.

Results have implications for astrophysical neutrino observations.

Abstract

In this work, we study neutrino spin oscillations in the case when they are gravitationally scattered off a rotating Kerr black hole surrounded by a thick magnetized accretion disk. We consider only toroidal magnetic field inside the disk. Neutrino spin precession is caused by the interaction of the neutrino magnetic moment with the magnetic field in the disk. Our treatment of the spin oscillations of the observed neutrino fluxes is based on numerical simulations of the propagation of a large number of incoming test neutrinos using High Performance Parallel Computing. We briefly discuss our results and their applications in the observations of astrophysical neutrinos.