Self-similar, self-gravitating viscous disks

被引:22
作者
Mineshige, S [1 ]
Umemura, M [1 ]
机构
[1] UNIV TSUKUBA,CTR COMPUTAT PHYS,TSUKUBA,IBARAKI 305,JAPAN
基金
美国国家科学基金会;
关键词
accretion; accretion disks; black hole physics; galaxies; kinematics and dynamics; gravitation; stars; formation;
D O I
10.1086/310252
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We find a self-similar steady disk solution for the gravitational potentials that gives equilibrium angular velocities as power-law functions of the radii, Omega proportional to R(-delta), with delta being a free parameter. In particular, when a disk is totally self-gravitating in the radial as well as perpendicular directions, we find delta = 1, leading to a flat rotation, constant temperature, and surface density proportional to R(-1). The disk structure is characterized by three parameters: the viscosity parameter, alpha; the ratio of disk thickness to radius; and the mass-flow rate. The solution shows that the nonviscous, isothermal rotating disk modeled by Mestel can be extended to a viscous accretion disk with a constant mass inflow.
引用
收藏
页码:L49 / L51
页数:3
相关论文
共 25 条
[1]   SELF-GRAVITY AND THE GLOBAL STRUCTURE OF ACCRETION DISKS [J].
ABRAMOWICZ, MA ;
CURIR, A ;
SCHWARZENBERGCZERNY, A ;
WILSON, RE .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1984, 208 (02) :279-291
[2]   CRITERIA FOR FRAGMENTATION IN A COLLAPSING ROTATING CLOUD [J].
BODENHEIMER, P ;
TOHLINE, JE ;
BLACK, DC .
ASTROPHYSICAL JOURNAL, 1980, 242 (01) :209-218
[3]  
BODO G, 1992, ASTRON ASTROPHYS, V253, P318
[5]  
FUKUE J, 1992, PUBL ASTRON SOC JPN, V44, P553
[6]  
GENZEL R, 1987, ANNU REV ASTRON ASTR, V25, P377
[7]  
HACHISU I, 1986, ASTROPHYS J, V308, P161, DOI 10.1086/164487
[8]  
HASHIMOTO M, 1995, ASTRON ASTROPHYS, V297, P135
[9]  
HAYASHI C, 1982, PROG THEOR PHYS, V68, P1949, DOI 10.1143/PTP.68.1949
[10]  
Kozlowski M., 1979, Acta Astronomica, V29, P157