Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pazh...11..302d&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 11, Apr. 1985, p. 302-309) Soviet Astronomy Letters (ISSN 0360-0327), vol. 11, Mar.-Apr
Astronomy and Astrophysics
Astronomy
9
Beta Particles, Gravitational Collapse, Magnetic Effects, Neutrinos, Stellar Magnetic Fields, Field Strength, Momentum, Pulsars, Relativistic Effects
Scientific paper
The impact of an intense magnetic field on the so-called Urca processes is evaluated. In particular, the case where the beta-decay processes come into kinetic equilibrium primarily through the interaction of electrons and positrons with free nucleons, so that the beta decays of nuclei may be neglected, is considered. The neutron-proton gas is assumed to be nondegenerate. It is found that the main contribution to the asymmetry of the neutrino radiation stemming from Urca processes will come from Gamow-Teller transitions. An expression is given for the neutrino and antineutrino emission asymmetry coefficients for relativistic values of the chemical potential and temperature, the typical environment during collapse. The directions of predominant neutrino and antineutrino emission agree with each other but are antiparallel to the magnetic field.
Dorofeev O. F.
Rodionov V. N.
Ternov I. M.
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