Dust-acoustic wave electrostatic and self-gravitational potentials in an opposite polarity dusty plasma system

An opposite polarity dusty plasma system (containing inertial positive as well negative dust species and inertialess singly charged ion species) is considered. The nature of the electrostatic self-gravitational potential structures (associated with dust-acoustic waves) identified by numerical analysis two coupled second-order nonlinear differential equations. latter are Poisson’s equations for potentials, where number densities (determined from their continuity momentum equations) density Boltzmann law) substituted. It observed that under consideration supports solitary associated potentials but only potential. basic features studied. also found amplitude decreases increase in density. effects other different parameters on these identified. applications this investigation some space laboratory systems pinpointed.