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Jeans instability in a magneto-radiative dusty plasma

Published online by Cambridge University Press:  01 December 2008

N. L. TSINTSADZE ,
ROZINA CHAUDHARY ,
H. A. SHAH  and
G. MURTAZA
N. L. TSINTSADZE
Affiliation:
Institute of Physics, Tbilisi, Georgia Department of Physics, G. C. University, Lahore 54000, Pakistan ([email protected]) Salam Chair in Physics, G. C. University, Lahore 54000, Pakistan
ROZINA CHAUDHARY
Affiliation:
Department of Physics, G. C. University, Lahore 54000, Pakistan ([email protected]) Salam Chair in Physics, G. C. University, Lahore 54000, Pakistan
H. A. SHAH
Affiliation:
Department of Physics, G. C. University, Lahore 54000, Pakistan ([email protected])
G. MURTAZA
Affiliation:
Salam Chair in Physics, G. C. University, Lahore 54000, Pakistan
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Abstract

The importance of thermal radiation on the Jeans instability is discussed for a magnetized dusty plasma with gravitational effects. The one-fluid MHD equations are developed by assuming that the entropy of each subsystem of plasma is conserved, when the temperature of the plasma species is non-relativistic. The dispersion relation in this case shows that thermal radiation helps to stabilize the Jeans instability. It is shown that the plasma is stable in a certain range of wavelengths. The magnetic field stabilizes the Jeans instability when the wave propagates across the magnetic field. However, for oblique propagation it is seen that the magnetic field does not stabilize the Jeans instability.

Type
Papers
Information
Journal of Plasma Physics , Volume 74 , Issue 6 , December 2008 , pp. 847 - 853
Copyright
Copyright © Cambridge University Press 2008

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