摘要
在不引入粘滞律的条件下详细讨论了弱磁化等温吸积盘对各种扰动形式所表现的不稳定性．结果表明，径向扰动能与环向扰动和垂向扰动相耦合，产生不同类型的脉动不稳定振荡模式．这些结果不仅对进一步理解脉动不稳定性与活动天体的光变现象的联系有理论意义，而且在某种程度上对Ｂａｌｂｕｓ和Ｈａｗｌｅｙ等人提出的弱磁场与吸积盘中湍流粘滞有关联的解释是一种支持与补充．
Instabilities of isothermal and weakly magnetized accretion disks corresponding to several types of perturbation forms are investigated in detail without viscosity laws. The studies show that different types of the oscillation modes of the pulsational instabilities arise from the coupling of radial perturbations to azimuthal perturbations and the vertical perturbations. These results not only are of theoretical values in understanding the relevance of the pulsation instabilities to the luminosity relevance of the active celestial bodies, but also support and complement Balbus and Hawleys idea about the relevance of weak magnetic field to the turbulent viscosity in accretion disks.
出处
《华中理工大学学报》
CSCD
北大核心
1998年第7期4-6,共3页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金
