Self-gravitational instability of partially ionized plasma with radiative effects

Abstract

The gravitational instability of two-component plasma is discussed to investigate the effect of the radiative heat-loss function, thermal conductivity, collision frequency of neutrals, finite electrical resistivity and viscosity of the medium on the Jeans instability. The usual Magnetohydrodynamics (MHD) equations are used for the present configuration with radiative heat-loss function and thermal conductivity. A general dispersion relation is obtained from perturbation equations using the normal mode analysis method. We find that the Jeans condition of self-gravitational instability is modified due to the presence of radiative heat-loss function and thermal conductivity. Numerical calculations have been performed to show the effect of the various parameters on the growth rate of the self-gravitational instability.