Neutrino oscillation mechanism for pulsar kicks reexamined

Abstract

Anisotropic neutrino emission during the neutron star formation can be the origin of the observed proper motions of pulsars. We derive a general expression for the momentum asymmetry in terms of the neutrino energy flux gradient, and show that a nonvanishing effect is induced at the lowest order by a deformed neutrinosphere. In particular, this result is valid for a neutrino flux transported through a spherical atmosphere with constant luminosity.

11 pages, added appendix, references, and minor changes in section 1, 2, and 5

References in corpus (1)

• Pulsar motions from neutrino oscillations induced by a violation of the equivalence principle

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