Instabilities of rare rotating cold molecular clouds

Nekrasov, A. K.
March 2009
Physics of Plasmas;Mar2009, Vol. 16 Issue 3, p032902
Academic Journal
New electromagnetic streaming instabilities of rare rotating molecular clouds induced by the relative drift of ions, electrons, and dust grains in the equilibrium state are studied. The cases of a weak and strong collisional coupling of neutrals and ions in the perturbed state are involved. The dust grains are considered as unmagnetized having weak collisional coupling with neutrals in perturbations. The compressibility is taken into account. Axisymmetric perturbations with growth rates much larger than the rotation frequency are found.


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