Abstract
It is pointed out that the recently published study on the stationary equilibria of a self-gravitating quasineutral dusty plasma is not correct. The claim of Rao et al. that a “closed form equation for the dust flow speed” [their Eq. (19)] is derived is misleading since a term proportional to the electrostatic potential φ0 has erroneously been left out. Further, the claim of Rao et al. that the singularities displayed by their Eqs. (19) and (22) at the characteristic speed are due to the inhomogeneity of the self-gravitating potential is devoid of any mathematical merit or physical reasoning.
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