THE AXISYMMETRICAL INSTABILITY IN WEAKLY MAGNETIZED ACCRETION DISKS

被引：24
|
作者：
KUMAR, S
COLEMAN, CS
KLEY, W
机构：
[1] DEPT DEF,DIV GUIDED WEAP,SALISBURY,SA 5108,AUSTRALIA
[2] UNIV CALIF SANTA CRUZ,DEPT ASTRON & ASTROPHYS,SANTA CRUZ,CA 95064
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1994年 / 266卷 / 02期
关键词：
ACCRETION; ACCRETION DISKS; INSTABILITIES; MHD;
D O I：
10.1093/mnras/266.2.379
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The energy principle is used to find the global criteria for stability to axisymmetric perturbations of stationary, magnetized, differentially rotating flows, in particular accretion discs. It is found that the vertical fields usually tend to stabilize while the toroidal fields destabilize, except when the vertical fields are weak. Bounds are placed on the growth rates of the instability. Normal modes are computed for fields in slender annuli which confirm the above results.
引用
收藏
页码：379 / 385
页数：7
相关论文
共 50 条
  • [21] Magnetorotational Instability In Accretion Disks
    Krishan, V.
    Mahajan, S. M.
    TURBULENCE, DYNAMOS, ACCRETION DISKS, PULSARS AND COLLECTIVE PLASMA PROCESSES, 2009, : 233 - +
  • [22] ON THE INSTABILITY OF THICK ACCRETION DISKS
    HACYAN, S
    ASTROPHYSICAL JOURNAL, 1982, 262 (01): : 322 - 329
  • [23] WAVE-PROPAGATION IN ACCRETION DISKS - AXISYMMETRICAL CASE
    LUBOW, SH
    PRINGLE, JE
    ASTROPHYSICAL JOURNAL, 1993, 409 (01): : 360 - 371
  • [24] A POWERFUL LOCAL SHEAR INSTABILITY IN WEAKLY MAGNETIZED DISKS .2. NONLINEAR EVOLUTION
    HAWLEY, JF
    BALBUS, SA
    ASTROPHYSICAL JOURNAL, 1991, 376 (01): : 223 - 233
  • [25] A POWERFUL LOCAL SHEAR INSTABILITY IN WEAKLY MAGNETIZED DISKS .4. NONAXISYMMETRIC PERTURBATIONS
    BALBUS, SA
    HAWLEY, JF
    ASTROPHYSICAL JOURNAL, 1992, 400 (02): : 610 - 621
  • [26] Magnetized accretion disks and the origin of bipolar outflows
    Konigl, A
    ACCRETION PHENOMENA AND RELATED OUTFLOWS: IAU COLLOQUIUM 163, 1997, 121 : 551 - 560
  • [27] Global, nonaxisymmetric instabilities in magnetized accretion disks
    Curry, C
    Pudritz, RE
    ACCRETION PHENOMENA AND RELATED OUTFLOWS: IAU COLLOQUIUM 163, 1997, 121 : 339 - 343
  • [28] Physics of magnetized accretion disks driving jets
    Ferreira, J
    ASTROPHYSICAL LETTERS & COMMUNICATIONS, 1996, 34 (1-6) : 345 - 350
  • [29] Forced oscillations in magnetized accretion disks and QPOs
    Pétri, J.
    Astronomy and Astrophysics, 2005, 439 (02): : 443 - 459
  • [30] Instabilities in multicomponent cold magnetized accretion disks
    Nekrasov, A. K.
    PHYSICS OF PLASMAS, 2007, 14 (06)
12345