Bulk viscosity in superfluid neutron star cores -: III.: Effects of Σ- hyperons

被引：77
|
作者：
Haensel, P
Levenfish, KP
Yakovlev, DG
机构：
[1] Nicholas Copernicus Astron Ctr, PL-00716 Warsaw, Poland
[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
来源：
ASTRONOMY & ASTROPHYSICS | 2002年 / 381卷 / 03期
关键词：
stars : neutron; dense matter;
D O I：
10.1051/0004-6361:20011532
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The bulk viscosity of neutron star cores containing hyperons is studied taking into account non-equilibrium weak process n + n reversible arrow p + Sigma(-). The rapid growth of the bulk viscosity within the neutron star core associated with switching on new reactions (modified Urca process, direct Urca process, hyperon reactions) is analyzed. The suppression of the bulk viscosity by superfluidity of baryons is considered and found out to be very important.
引用
收藏
页码：1080 / 1089
页数：10
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