Forced KdV equation in magnetorotating electron-positron-ion plasmas

Abstract

In this investigation, the study of electron acoustic solitary waves (EASWs) in an electron-positron-ion (e-p-i) magnetoplasma comprising of inertial cold electrons, superthermally distributed hot positrons and inertialess electrons have been illustrated in the presence of stationary positive ions. The forced Korteweg-de Vries (fKdV) equation is derived by employing the reductive perturbation method to study the characteristic properties of electron acoustic solitary structures. The effect of various physical plasma parameters namely, the temperature ratio, the strength of the magnetic field, superthermality and density of charged particles have been quantitatively analysed. The combined impact of these parameters greatly enhance the characteristics of the solitary structures. It is remarked that the findings of the present investigation maybe of great importance to explore the underlying properties of various types of nonlinear structures in auroral regions, pulsars, Van Allen radiation belts etc.