Thermal stability of a weakly magnetized rotating plasma

Abstract

The thermal stability of a weakly magnetized, rotating, stratified, optically thin plasma is studied by means of linear-perturbation analysis. We derive dispersion relations and criteria for stability against axisymmetric perturbations that generalize previous results on either non-rotating or unmagnetized fluids. The implications for the hot atmospheres of galaxies and galaxy clusters are discussed.

16 pages, 3 figures, MNRAS accepted. New figures and corrected equations with respect to previous version. Results unchanged

References in corpus (5)

• A New Model of the Galactic Magnetic Field
• Buoyancy Instabilities in Weakly Magnetized Low Collisionality Plasmas
• Simulating the Cooling Flow of Cool-Core Clusters
• Regulation of thermal conductivity in hot galaxy clusters by MHD turbulence
• The HBI in a quasi-global model of the intracluster medium

Cited by in corpus (6)

• Efficiency of gas cooling and accretion at the disc-corona interface
• Gas rotation in galaxy clusters: signatures and detectability in X-rays
• Inflow of low-metallicity cool gas in the halo of the Andromeda galaxy
• On the nature of local instabilities in rotating galactic coronae and cool cores of galaxy clusters
• Magnetorotational instability in cool cores of galaxy clusters
• Effect of Composition Gradient on Magnetothermal Instability Modified by Shear and Rotation