Wave Propagation in Anisotropic Magnetically Quantized Ion Plasma with Trapped Electron and Positron

This study examines the effects of magnetically quantized degenerate trapped electrons and positrons on small-amplitude ion acoustic shock waves (IAShWs) in a pair ion plasma using the Zakharov-Kuznetsov Burger (ZKB) equation. It focuses on how factors like magnetic quantization, degenerate temperature, normalized negative ions, electrons, positrons, anisotropic pressure, and other relevant physical parameters from an astrophysical plasma environment influence the propagation of IAShWs, particularly in the nonlinear regime. This research explores that there exist two distinct wave propagation modes—subsonic and supersonic which shows few distinct characteristics in different physical plasma environment of astrophysical origin. The results could aid in understanding the nonlinear dynamics and wave propagation characteristics in superdense plasmas found in white dwarfs and neutron stars, where the effects of trapped electrons and positrons, as well as ionic pressure anisotropy, are significant which is yet to be explored in detail.