Abstract

An investigation has been carried out on the electromagnetic modes and associated instabilities in a partially ionized, nonuniform, self-gravitating positively and negatively charged dusty plasma, showing the effects of the inhomogeneities in the external magnetic field and the plasma number density, the neutral fluid dynamics, the drag forces, etc. The effects of these factors have been treated both analytically and numerically. The factors that stabilize the low frequency electromagnetic waves in the dusty plasma under consideration could be responsible to form the astrophysical objects in the galaxies.

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