Effect of Coriolis force on the self-gravitational instability of dusty plasma in the presence of magnetic field

Frontiers of Physics and Plasma Science

Pensia, R.K.^1 ; Sutar, D.L.^2 ; Kumar, V.^3 ; Kumar, A.^3

Department of Physics, Govt. P.G. Girls College, Neemuch

458441, India^1

Research Scholar, Mewar University Gangrar, Chittorgarh

312901, India^2

Department of Physics, Pacific University, Udaipur

313024, India^3

关键词: Criterion of instabilities;    Dispersion relations;    Dusty plasmas;    Growth rate of instabilities;    Mathematical calculations;    Perturbation equation;    Self-gravitational;    Stabilizing effects;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/836/1/012014/pdf
DOI  :  10.1088/1742-6596/836/1/012014

来源: IOP

【 摘 要 】

In view of the importance of Coriolis force in an astrophysical context, the problem of self-gravitational instability of dusty plasma in the presence of magnetic field is investigated. Equations of the problem are stated and the dispersion relation has been derived with the help of linearized perturbation equations. We find that the Jeans criterion of instability remains valid but the expression of the critical Jeans wave-number is modified. Mathematical calculations have been performed and some figures are plotted between the growth rate of instability and wave numbers. From the curves, it is found that dust sonic speed has a stabilizing effect.