Effects of neutrino-electron scattering on neutrino transport in type II supernovae

被引：2

作者：

Smit, JM ^{[1
]}

Cernohorsky, J ^{[1
]}

VAndenHorn, LJ ^{[1
]}

VanWeert, CG ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 460卷 / 02期

关键词：

elementary particles; scattering; stars; interiors; supernovae; general;

D O I：

10.1086/177017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the effects of neutrino-electron scattering on electron-neutrino transport during the collapse phase of a Type II supernova. Calculations of stationary state transport were performed on a 1.17 M. spherically symmetric infall model, with neutrino-electron scattering turned off and on, During the transport calculation, the stellar background is kept fixed in time. In this manner, we are able to isolate the effects of neutrino-electron scattering on neutrino transport alone. We find that the inclusion of neutrino-electron scattering approximately doubles the emitted neutrino flux during infall. Neutrino-electron scattering increases the rate at which energy and lepton number are transferred from the matter to the neutrinos. However, the transfer of entropy to the matter increases in a large part of the collapsing core. We also discuss the equilibration of the neutrinos.

引用

页码：895 / 901

页数：7

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