Propagation of nonlinear excitations of dust acoustic waves by a moving charged object in superthermal plasmas

We present the nonlinear propagation dynamics of dust acoustic wave (DAW) excitations due to charged moving object in a dusty plasma consisting of inertial dust fluid with electrons and ions having kappa velocity distribution. In the small amplitude limit, it is revealed that moving charge-induced plasma fluid equations are reduced to a forced Korteweg–de Vries (fKdV) equation. Time-dependent numerical simulation reveals the formation of...