Magnetogravitational stability of self-gravitating plasma with thermal conduction and finite Larmor radius through porous medium
type: Item
instance of: scholarly article
title: Magnetogravitational stability of self-gravitating plasma with thermal conduction and finite Larmor radius through porous medium
zbMATH Open document ID: 0645.76059
DOI: 10.1007/BF01094937
author: R. K. Chhajlani
author: D. S. Vaghela
published in: Astrophysics and Space Science
publication date: 1987-01-01T00:00:00Z
review text: The problem of incipient fragmentation of interstellar matter to form condensation is investigated taking into account the porosity, viscosity, thermal conductivity, and effect of finite ion-Larmor radius (FLR) on the self-gravitating plasma having a uniform magnetic field acting in vertical direction. Relevant linearized equations are stated and dispersion relation is obtained. Wave propagation in longitudinal and transverse direction to the magnetic field is considered. Stability and instability of the medium is discussed. It is found that if the Jeans's instability condition is not fulfilled the medium must remain stable. Magnetic field, FLR and porosity do not affect the Jeans's criterion of instability in longitudinal direction but in transverse direction, the magnetic field and FLR have stabilizing effect which is reduced due to porosity of the medium. Thermal conductivity destabilizes the medium in both the directions. In transverse direction contribution of FLR on the Jeans's expression for instability is not observed in thermally conducting medium.
Mathematics Subject Classification ID: 76E25
Mathematics Subject Classification ID: 76E20
zbMATH DE Number: 4053214
zbMATH Keywords: fragmentation of interstellar matter
zbMATH Keywords: finite ion-Larmor radius
zbMATH Keywords: self- gravitating plasma
zbMATH Keywords: linearized equations
zbMATH Keywords: Stability
zbMATH Keywords: instability
zbMATH Keywords: Jeans's instability condition
MaRDI profile type: Publication
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full work available at URL: https://doi.org/10.1007/bf01094937
OpenAlex ID: W2010246135
description: scientific article; zbMATH DE number 4053214