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The Alfven and compressive resonances in a dusty self-gravitating plasma

机译：尘土自重等离子体中的Alfven和压缩共振

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摘要

The effects of self-gravity of a dusty plasma on the Alfven and compressive resonance absorption processes are investigated. Instead of questions on the stability of waves in a gravitating plasma, which leads to the Jeans instability, we investigate the spatial behavior of the fields of a wave of real frequency, in a magnetized, self-gravitating, dusty plasma, in which the Alfven and compressive resonances are encountered. The equilibrium state of the system is discussed, next the resonance process at frequencies much lower than the dust-cyclotron frequency, then resonance at frequencies comparable to the cyclotron frequency. It is found that self-gravity can lead to considerable modification of the resonance processes, with removal of the resonances in some circumstances. These results are applicable to interstellar clouds and star-formation regions. (c) 2005 American Institute of Physics.
机译：研究了尘土等离子体的自重对Alfven和压缩共振吸收过程的影响。我们没有研究引力等离子体中波的稳定性会导致Jeans不稳定的问题，而是研究了在磁化，自重，多尘等离子体中真实频率波场的空间行为，其中Alfven并遇到压缩共振。讨论了系统的平衡状态，接下来是在远低于粉尘回旋频率的频率下的共振过程，然后是在与回旋频率相当的频率下的共振。发现自重会导致共振过程的显着改变，在某些情况下会消除共振。这些结果适用于星际云和恒星形成区域。 （c）2005年美国物理研究所。

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