Resonant spin-flavour precession of neutrinos and pulsar velocities

Details Resonant spin-flavour precession of neutrinos and pulsar velocities Resonant spin-flavour precession of neutrinos and pulsar velocities

1997-02-27

arxiv.org/abs/hep-ph/9702436v2

Phys.Rev.D56:6117-6124,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, LaTex. Corrected calculation of the geometrical factor and temperature derivatives of densities. Final results sligh

Scientific paper

10.1103/PhysRevD.56.6117

Young pulsars are known to exhibit large space velocities, up to $10^3$ km/s. We propose a new mechanism for the generation of these large velocities based on an asymmetric emission of neutrinos during the supernova explosion. The mechanism involves the resonant spin-flavour precession of neutrinos with a transition magnetic moment in the magnetic field of the supernova. The asymmetric emission of neutrinos is due to the distortion of the resonance surface by matter polarisation effects in the supernova magnetic field. The requisite values of the field strengths and neutrino parameters are estimated for various neutrino conversions caused by their Dirac or Majorana-type transition magnetic moments.

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