Simulations on the gravito‐electrodynamical evolution of charged dust grain plasma: A model of galaxy formations

Abstract

We present results of numerical simulations on the dynamical evolution of a two‐component plasma system consisting of charged dust grains and oppositely charged low‐mass ions. We consider the case that the electrostatic and the gravitational forces are similar in magnitude (charge‐to‐mass ratio is of order of square root of the gravitational constant). Wollman (1988, Phys. Rev. A37, 3052) showed that such case is possible in some situations and that the gravitational condensation of the system can explain many observed properties of our galaxy. Morphological changes of the plasma system are studied by two‐dimensional particle‐in‐cell (PIC) simulation.