Radiation Pressure-Driven Magneto-Gravitational Instability in Finitely Conducting Strongly Coupled Quantum Plasmas

Abstract

This paper investigates the radiation pressure-driven linear magneto-gravitational instability in finitely conducting strongly coupled quantum plasma within the framework of the generalized hydrodynamic fluid model. The radiation pressure assists in the dynamic behavior of the plasmas by modifying the dispersion properties of the gravitational instability. Normal mode analysis is applied to the linearized perturbation equations to derive the general dispersion relation. The dispersion relations are discussed in the hydrodynamic and kinetic limits in the transverse and longitudinal propagation modes. The Jeans instability criterion and Jeans length are significantly modified due to radiation pressure, quantum corrections, and strong coupling effects. The viscoelastic compression mode in the kinetic limit has been coupled with quantum diffraction and Alfvén mode. It is also observed that the radiation pressure, quantum effects, and viscoelastic parameters suppress the growth rates; thus, these have stabilizing effects on the gravitational instability. The effects of various parameters on the growth rate of the instability are calculated numerically, and the outcomes are represented graphically.