Streaming instabilities in multicomponent interstellar clouds

Shan, S. Ali; Saleem, H.; Sajid, M.
July 2008
Physics of Plasmas;Jul2008, Vol. 15 Issue 7, p072904
Academic Journal
Streaming instabilities in interstellar clouds have been investigated. It is pointed out that the motion of a lighter dust species relative to a plasma containing a heavier dust species can give rise to low frequency electrostatic fluctuations. The dust ion acoustic and dust acoustic waves can become unstable in such plasmas. The instability regions are influenced by the presence of background dust. Since interstellar clouds have relative motions in many cases and contain dust species, therefore the present results indicate the presence of an electrostatic dust ion acoustic wave and dust acoustic wave in such systems. The results have been applied to interstellar medium using particular data and comparisons have been made with previous works.


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