Neutrino-triggered asymmetric magnetorotational mechanism for pulsar natal kick

Abstract

The sterile neutrino mechanisms for natal neutron star kicks are reanalyzed. It is shown that the magnetic field strengths needed for obtaining the observable values of kicks were underestimated essentially. Another mechanism with standard neutrinos is discussed where the outgoing neutrino flux in a supernova explosion with a strong toroidal magnetic field generation causes the field redistribution in "upper" and "lower" hemispheres of the supernova envelope. The resulting magnetic field pressure asymmetry causes the pulsar natal kick.

Comments: 9 pages, LaTeX, 1 EPS figure, based on the talks presented by A.V. Kuznetsov at the XV-th International School "Particles and Cosmology", Troitsk, Moscow Region, May 26 - June 2, 2011, and the XV-th Lomonosov Conference on Elementary Particle Physics, August 18-24, 2011, Moscow State University, Moscow, to appear in the Proceedings