Jeans instability of rotating anisotropic plasma with tensor viscosity

Frontiers of Physics and Plasma Science

Patidar, Archana^1 ; Sharma, Prerana^2

Physics Department, Ujjain Engineering College, Ujjain, M.P.

456010, India^1

School of Studies in Physics, Vikram University, Ujjain

456010, India^2

关键词: Anisotropic plasmas;    Dispersion relations;    Gravitating plasma;    Growth rate of instabilities;    Jeans instability;    Modified conditions;    Normal mode analysis;    Perturbation equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/836/1/012027/pdf
DOI  :  10.1088/1742-6596/836/1/012027

来源: IOP

【 摘 要 】

In the present work, the role of rotation with viscous tensor in anisotropic self-gravitating plasma has been investigated using magnetohydrodynamic (MHD) model and Chew-Goldberger-Low (CGL) fluid theory. The general dispersion relation is obtained by normal mode analysis theory with the help of linearized perturbation equations and further discussed with some limiting cases. The modified condition for Jeans instability has been obtained. The influence of considered parameters on the growth rate of instability is shown analytically and numerically. The result of present study may be useful in the region of spiral arms of galaxy.