Dust-acoustic waves in self-gravitating dusty plasmas with fluctuating dust charges
Dust acoustic waves
Self gravitating dusty plasmas
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It is shown that the recently published work of Pandey and Dwivedi [J. Plasma Phys. 55, 395 (1996)] dealing with dust-acoustic waves in a self-gravitating unmagnetized dusty plasma is erroneous. This is demonstrated on the basis of a dispersion relation in which gravitational and electrostatic forces are kept on an equal footing. Furthermore, a general linear dispersion relation for the dust-acoustic and dust-ion acoustic waves in self-gravitating dusty plasmas is obtained, taking into account the dust-charge perturbations. Specific results for limiting cases are discussed.
CitationVerheest, F.; Shukla, P.K.; Rao, N.N.; Meuris, P. (1997). Dust-acoustic waves in self-gravitating dusty plasmas with fluctuating dust charges. , Journal of Plasma Physics, Vol. 58, Issue 1, 163-170,