Magnetosonic waves propagation in a magnetorotating quantum plasma.

Abstract

Employing the quantum magnetohydrodynamic (QMHD) model, the basic properties of magnetosonic waves were investigated in a magnetorotating quantum plasma. The contemplated system considered a combined effects of quantum tunneling and degeneracy forces, dissipation influence, spin magnetization, in addition to the Coriolis force. Fast and slow magnetosonic modes were obtained and examined in the linear regime. Their frequencies are significantly modified due to the rotating parameters (frequency and angle) in addition to quantum correction effects. The nonlinear Korteweg-de Vries-Burger equationwas derived using the reductive perturbation approach in a small amplitude limit. The aspects of magnetosonic shock profiles were explored analytically by applying the Bernoulli equationapproach and numerically using the Runge-Kutta method. The regarded plasma parameters due to the investigated effects were found to play major roles in specifying the nature of monotonic and oscillatory shock waves' structures and their features. Our results may be applicable in magnetorotating quantum plasma in astrophysical environments such as neutron stars and white dwarfs.