Oblique propagation of ion-acoustic solitary waves in magnetized electron-positron-ion plasma with Cairns distribution

Abstract

Abstract The propagation of ion-acoustic (IA) solitary waves (SWs) is investigated in a magnetized electron-positron-ion (EPI) plasma with Cairns distributed electrons and positrons. The Korteweg-de Vries (KdV) and modified KdV (mKdV) equations are derived for the potential by employing the reductive perturbation technique (RPT) and its solitary wave (SW) solutions are analyzed. The effects of relevant plasma parameters (viz., nonthermality parameter β, positron concentration , ion thermality δ and magnetic field strength Ω) on the characteristics of IA solitary structures are discussed in detail.