Electron neutrino opacity in magnetised media

Details Electron neutrino opacity in magnetised media Electron neutrino opacity in magnetised media

1997-11-03

arxiv.org/abs/hep-ph/9711206v1

JHEP 9801 (1998) 013

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1088/1126-6708/1998/01/013

We study the effects of strong magnetic fields ($B> 10^{13}$~G) in the cross section for $\nu_e n\to p e$ scattering in the presence of a degenerate electron background. This can be relevant for the $\nu_e$ propagation in the proto-neutron star stage after supernovae collapse. We find that for field strengths $B> 10^{16}$~G$(E_\nu/10$ MeV$)^2$ the $\nu_e$ opacity is sizeably affected by the magnetic field and can lead to a shift in the location of the electron neutrino sphere towards lower densities. We discuss the implications that this may have for scenarios proposed to explain the observed pulsar velocities.

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