The pulsational mode in the presence of dust charge fluctuations

B. P. Pandey, J. Vranjes*, S. Poedts, P. K. Shukla

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The pulsational mode of gravitational collapse of a dusty plasma is studied in the present work. We find that the grain charge fluctuation defines a parameter regime in which pulsational mode of gravitational collapse (PMGC), which is a consequence of the gravito-electrostatic coupling, is permitted, and outside such a parameter regime, usual Jeans mode ensues. Therefore, grain charge fluctuations may play an important role in deciding which of the two modes, namely PMGC or usual Jeans instability of a collapsing cloud will be important. We find that the growth rate of Jeans instability is not very sensitive to the grain charge fluctuations.

Original languageEnglish
Pages (from-to)513-517
Number of pages5
JournalPhysica Scripta
Volume65
Issue number6
DOIs
Publication statusPublished - Jun 2002
Externally publishedYes

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