The behaviour of quiescent accretion discs in dwarf novae

被引：7
|
作者：
Truss, MR [1 ]
Wynn, GA
Wheatley, PJ
机构：
[1] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
[2] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2004年 / 347卷 / 02期
关键词：
accretion; accretion discs; instabilities; methods : numerical; binaries : close; stars : dwarf novae; novae; cataclysmic variables;
D O I：
10.1111/j.1365-2966.2004.07236.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We propose a simple explanation for the constant mean brightness observed between outbursts in dwarf novae. Secular changes in the total energy dissipation rate of the accretion disc brought about by variations in surface density, temperature and disc radius can be regulated by the gradual cooling of a small, critically stable hot inner region. The hypothesis is supported by two-dimensional time-dependent numerical models of dwarf nova accretion discs.
引用
收藏
页码：569 / 574
页数：6
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