High-growth-rate magnetohydrodynamic instability in differentially rotating compressible flow

被引：0

作者：

Sharma, Mradul ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Astrophys Sci Div, Theoret Astrophys Sect, Bombay 400085, Maharashtra, India

来源：

PHYSICAL REVIEW E | 2010年 / 82卷 / 03期

关键词：

ACCRETION DISKS; HYDRODYNAMIC ACCRETION; SHEAR INSTABILITIES; STABILITY; TURBULENCE; TRANSITION; TRANSPORT; BYPASS;

D O I：

10.1103/PhysRevE.82.037302

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The transport of angular momentum in the outward direction is the fundamental requirement for accretion to proceed in an accretion disk. This objective can be achieved if the accretion flow is turbulent. Instabilities are one of the sources for the turbulence. We study a differentially rotating compressive flow in the presence of nonvanishing radial and azimuthal magnetic field and demonstrate the occurrence of a high growth rate instability. This instability operates in a region where magnetic energy density exceeds the rotational energy density.

引用

页数：4

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