The axisymmetric instability in weakly magnetized accretion discs
The axisymmetric instability in weakly magnetized accretion discs
复制标题
弱磁化吸积盘中的轴对称不稳定性
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
W. Kley
中科院分区：
文献类型：
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作者：
S. Kumar;C. Coleman;W. Kley
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
