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

页码：404 / 408

页数：5

共 20 条

[1] ROTATING BLACK HOLES - LOCALLY NONROTATING FRAMES, ENERGY EXTRACTION, AND SCALAR SYNCHROTRON RADIATION [J].