Dust-acoustic rogue waves in an electron-positron-ion-dust plasma medium

TL;DR

This paper theoretically investigates dust-acoustic rogue waves in a complex four-component dusty plasma, analyzing stability, effects of positrons and dust, and potential implications for space and laboratory plasma phenomena.

Contribution

It introduces a detailed theoretical model for dust-acoustic rogue waves in a four-component plasma including positrons and dust, exploring stability and nonlinear wave characteristics.

Findings

Positrons and dust influence rogue wave amplitude and width.

Stable and unstable regions of dust-acoustic waves identified.

Potential applications in space and laboratory plasma studies.

Abstract

A precise theoretical investigation has been made on dust-acoustic (DA) waves (DAWs) in a four components dusty plasma medium having inertial warm adiabatic dust grains and inertialess $q$-distributed electrons as well as isothermal ions and positrons. The nonlinear and dispersive parameters of the nonlinear Schr\"{o}dinger equation (NLSE), which develops by using reductive perturbations technique, have been used to recognize the stable and unstable parametric regions of the DAWs as well as associated DA rogue waves (DARWs) in the unstable parametric regime of the DAWs. The effects of the light positrons and massive dust grains in determining the amplitude and width of the DARWs associated with DAWs are examined. The findings of our present investigation may be useful for understanding different nonlinear electrostatic phenomena in both space and laboratory plasmas.