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Damping of nonlinear magneto-acoustic waves

Published online by Cambridge University Press:  13 March 2009

G. L. Kalra  and
V. B. Bhatia
G. L. Kalra
Affiliation:
Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India
V. B. Bhatia
Affiliation:
Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India
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Abstract

Nonlinear magneto-acoustic waves in a turbulent plasma are simulated by collisional MHD equations. Damping of these waves due to electrical conductivity arising from micro-instabilities and collisional viscosity are analyzed. Numerical investigation of competing effects due to non-linearity and dissipation has been carried out. It is found that finite amplitude perturbation leads to the formation of a shock in both the slow and the fast mode propagation. Collisional viscosity plays an important role in the damping of nonlinear magneto-acoustic waves in the astrophysical and space plasmas.

Type
Research Article
Information
Journal of Plasma Physics , Volume 20 , Issue 1 , August 1978 , pp. 125 - 136
Copyright
Copyright © Cambridge University Press 1978

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References

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