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Vortex formation in a non-uniform self-gravitating dusty magnetoplasma

Published online by Cambridge University Press:  01 August 2007

AISHA IJAZ ,
ARSHAD M. MIRZA  and
M. AZEEM
AISHA IJAZ
Affiliation:
Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320, [email protected]
ARSHAD M. MIRZA
Affiliation:
Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320, [email protected]
M. AZEEM
Affiliation:
Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320, [email protected]
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Abstract

The dynamics of low-frequency, short-wavelength electrostatic (SWES) drift waves in a self-gravitating, non-uniform, collisional dusty magnetoplasma with equilibrium dust-velocity gradients is studied in the present work. By employing the dust continuity and momentum equations to describe the dust dynamics and Boltzmann distribution for the electrons and ions, we have derived a new set of nonlinear mode coupling equations. In the linear limit, it is found that SWES drift waves are subjected to dissipative instability in the presence of an equilibrium dust sheared flow and self-gravitation effect. On the other hand, in the nonlinear case, it is shown that possible stationary solutions of the nonlinear equations are dipolar vortices.

Type
Papers
Information
Journal of Plasma Physics , Volume 73 , Issue 4 , August 2007 , pp. 591 - 598
Copyright
Copyright © Cambridge University Press 2006

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