Radiative viscosity of neutron stars

被引：6
|
作者：
Yang, Shu-Hua [1 ]
Zheng, Xiao-Ping [1 ]
Pi, Chun-Mei [1 ]
机构：
[1] Huazhong Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China
来源：
PHYSICS LETTERS B | 2010年 / 683卷 / 4-5期
关键词：
Neutron stars; Bulk viscosity; Radiative viscosity; STRANGE QUARK MATTER; BULK VISCOSITY; INSTABILITY; VIBRATIONS;
D O I：
10.1016/j.physletb.2009.12.038
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We Study non-linear effects of radiative viscosity of npe matter in neutron stars for both direct Urca process and modified Urca process, and find that non-linear effects will decrease the ratio of radiative viscosity to bulk viscosity from 1.5 to 0.5 (for direct Urca process) and 0.375 (for modified Urca process). Which means that for small oscillations of neutron star, the large fraction of oscillation energy is emitted as neutrinos; but for large enough ones, bulk viscous dissipation dominates. (C) 2009 Elsevier B.V. All rights reserved.
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页码：255 / 258
页数：4
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