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Effect of viscosity on propagation of MHD waves in astrophysical plasma

Published online by Cambridge University Press:  25 January 2013

ALEMAYEHU MENGESHA  and
S. B. TESSEMA
ALEMAYEHU MENGESHA
Affiliation:
Department of Physics, Bule Hora University, PO Box 144, Bule Hora, Ethiopia (alexye7@gmail.com) Department of Physics, Kotebe College, PO Box 31248, Addis Ababa, Ethiopia Entoto Astronomical Observatory and Space Science Research Center, PO Box 8412, Addis Ababa, Ethiopia
S. B. TESSEMA
Affiliation:
Department of Physics, Kotebe College, PO Box 31248, Addis Ababa, Ethiopia Entoto Astronomical Observatory and Space Science Research Center, PO Box 8412, Addis Ababa, Ethiopia
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Abstract

We determine the general dispersion relation for the propagation of magnetohydrodynamic (MHD) waves in an astrophysical plasma by considering the effect of viscosity with an anisotropic pressure tensor. Basic MHD equations have been derived and linearized by the method of perturbation to develop the general form of the dispersion relation equation. Our result indicates that an astrophysical plasma with an anisotropic pressure tensor is stable in the presence of viscosity and a strong magnetic field at considerable wavelength.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 5 , October 2013 , pp. 535 - 544
Copyright
Copyright © Cambridge University Press 2013 

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