Parity violation in neutrino transport and the origin of pulsar kicks

被引：31

作者：

Lai, D ^{[1
]}

Qian, YZ

机构：

[1] CALTECH, Dept Phys, Pasadena, CA 91125 USA

[2] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 495卷 / 02期

关键词：

dense matter; magnetic fields; pulsars; general; radiation transfer; stars; neutron supernovae;

D O I：

10.1086/311228

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In proto-neutron stars with strong magnetic fields, the neutrino-nucleon scattering/absorption cross sections depend on the direction of neutrino momentum with respect to the magnetic field axis, a manifestation of parity violation in weak interactions. We study the deleptonization and thermal cooling (via neutrino emission) of proto-neutron stars in the presence of such asymmetric neutrino opacities. Significant asymmetry in neutrino emission is obtained because of multiple neutrino-nucleon scatterings. For an ordered magnetic field threading the neutron star interior, the fractional asymmetry in neutrino emission is about 0.006(B/10(14) G), corresponding to a pulsar kick velocity of about 200(B/10(14) G) km s(-1) for a total radiated neutrino energy of 3 x 10(53) ergs.

引用

页码：L103 / L106

页数：4

共 24 条

[1]

Bisnovatyi-Kogan G. S., 1993, Astronomical and Astrophysical Transactions, V3, P287, DOI 10.1080/10556799308230566

[2] ON THE NATURE OF CORE-COLLAPSE SUPERNOVA EXPLOSIONS [J].