Abstract
A theoretical analysis of the dust acoustic wave in self-gravitating dusty plasmas is presented within the consideration of suprathermal electrons and ions. It is shown that a cutoff for the longer wavelengths and a pure growth mode are introduced due to the presence of self-gravitational force. Furthermore, the suprathermal electrons and ions can reduce the dispersion of the dust-acoustic waves, and broaden the wave-number range as well as increase the growth rate of the pure growth mode.
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