BLACK-HOLE STELLAR ACCRETION IN ACTIVE GALACTIC NUCLEI

被引：0
|
作者：
HAMEURY, JM
KING, AR
LASOTA, JP
AUVERGNE, M
机构：
[1] UNIV LEICESTER, DEPT PHYS & ASTRON, ASTRON GRP, LEICESTER LE1 7RH, LEICS, ENGLAND
[2] OBSERV PARIS, DARC, CNRS, UNITE PROPRE 176, F-92195 MEUDON, FRANCE
[3] OBSERV PARIS, DASGAL, CNRS, UA 335, F-92195 MEUDON, FRANCE
来源：
ASTRONOMY & ASTROPHYSICS | 1994年 / 292卷 / 02期
关键词：
ACCRETION; ACCRETION DISKS; GALAXIES; ACTIVE; NUCLEI; X-RAYS; BLACK HOLES;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider the accretion of main sequence or slightly evolved stars by a massive Kerr black hole in an active galactic nucleus (AGN). We show that in many cases the stars are stably accreted via Roche lobe overflow over 10(4) - 10(5) yr. If several stars accrete simultaneously, this is sufficient to power typical AGN. Periodic modulations would be rather weak, as each star contributes only a fraction of the luminosity. Long term variability (years) might result from the dynamical instability of mass transfer from one of the stars.
引用
收藏
页码：404 / 408
页数：5
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