耗散过程对吸积盘磁不稳定性的影响

耗散过程对吸积盘磁不稳定性的影响

周爱萍

山东理工大学理学院, 山东淄博 255049

收稿日期:2008-08-17 修回日期:1900-01-01 出版日期:2009-01-24 发布日期:2010-04-15
通讯作者: 周爱萍

School of science, Shandong University of Technology, Zibo 255049, Shandong, China

Received:2008-08-17 Revised:1900-01-01 Online:2009-01-24 Published:2010-04-15

摘要/Abstract

摘要： 在新的反常黏滞机制的基础上,利用微扰方法导出色散方程,分析了耗散过程对吸积盘磁不稳定性的影响。结果表明:耗散率随半径的增大而减小;在磁场较小时,耗散过程的影响不可忽略。这不同于在微观黏滞和阻抗基础上得到的结论。

关键词: 阻抗, 耗散过程, 磁不稳定性, 黏滞

Abstract: On the basis of the new model of anomalous viscosity, a dispersion equation was derived from the perturbation method, and the effect of dissipation on magnetic instability of accretion disks was analyzed. It was shown that the dissipative rate becomes smaller as the radius becomes larger and the dissipation can not be neglected as the magnetic field is smaller, which is different from the result derived from the microscopic viscosity and resistivity.

Key words: magnetic instability, viscosity, resistivity, dissipation

中图分类号:

P142

周爱萍. 耗散过程对吸积盘磁不稳定性的影响[J]. J4, 2009, 44(1): 44-48 .

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