Super-Eddington slim accretion discs with winds

被引:77
作者
Dotan, Calanit [1 ]
Shaviv, Nir J. [1 ]
机构
[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
关键词
accretion; accretion discs; PHOTON BUBBLES; BLACK-HOLES; STELLAR WINDS; STRANGE MODES; DISKS; LUMINOSITY; BEHAVIOR;
D O I
10.1111/j.1365-2966.2011.18235.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We construct Super-Eddington Slim discs models around both stellar and supermassive black holes by allowing the formation of a porous layer with a reduced effective opacity. Unlike the standard scenario in which the discs become thick, super-Eddington discs remain slim. In addition, they accelerate a significant wind with a 'thick disc' geometry. We show that above about 1.5 times the standard critical mass accretion rate (needed to release the Eddington luminosity), the net luminosity released is above Eddington. At above about five times the standard critical rate, the central BH accretes more than the Eddington accretion rate. Above about, the disc remains slim but the wind becomes spherical, and the present model breaks down.
引用
收藏
页码:1623 / 1632
页数:10
相关论文
共 33 条
[1]  
ABAMOWICZ MA, 1980, APJ, V241, pL7
[2]   SLIM ACCRETION DISKS [J].
ABRAMOWICZ, MA ;
CZERNY, B ;
LASOTA, JP ;
SZUSZKIEWICZ, E .
ASTROPHYSICAL JOURNAL, 1988, 332 (02) :646-658
[3]   THERMAL EQUILIBRIA OF ACCRETION DISKS [J].
ABRAMOWICZ, MA ;
CHEN, XM ;
KATO, S ;
LASOTA, JP ;
REGEV, O .
ASTROPHYSICAL JOURNAL, 1995, 438 (01) :L37-L39
[4]   PHOTON BUBBLES - OVERSTABILITY IN A MAGNETIZED ATMOSPHERE [J].
ARONS, J .
ASTROPHYSICAL JOURNAL, 1992, 388 (02) :561-578
[5]  
Bardeen J. M., 1973, BLACK HOLES, P215
[6]   Super-Eddington fluxes from thin accretion disks? [J].
Begelman, MC .
ASTROPHYSICAL JOURNAL, 2002, 568 (02) :L97-L100
[7]   Photon bubbles and the vertical structure of accretion disks [J].
Begelman, Mitchell C. .
ASTROPHYSICAL JOURNAL, 2006, 643 (02) :1065-1080
[8]   On the fate of gas accreting at a low rate on to a black hole [J].
Blandford, RD ;
Begelman, MC .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 303 (01) :L1-L5
[9]   Relativistic accretion disk models of high-state black hole X-ray binary spectra [J].
Davis, SW ;
Blaes, OM ;
Hubeny, I ;
Turner, NJ .
ASTROPHYSICAL JOURNAL, 2005, 621 (01) :372-387
[10]   RADIATION HYDRODYNAMIC CALCULATION OF SUPER-EDDINGTON ACCRETION DISKS [J].
EGGUM, GE ;
CORONITI, FV ;
KATZ, JI .
ASTROPHYSICAL JOURNAL, 1988, 330 (01) :142-167