Longitudinal low-frequency waves in the flows of self-gravitating charged dust grains in an electron-ion plasma

Abstract

A study is made of the features of wave processes in the individual flows of self-gravitating dust grains in a plasma and the electric and gravitational interactions in a system of several dusty plasma flows. It is shown that, in a dusty plasma, Debye screening can substantially weaken the electric coupling between the beams of self-gravitating grains, without affecting the gravitational forces between them, and that the electrostatic perturbations are exchanged between the grain flows via gravitational fields, as happens in vacuum.