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Nonlinear interaction of slow Alfvén wave with ion acoustic wave and applications to space plasma

Published online by Cambridge University Press:  03 June 2013

B. K. DAS ,
R. P. SHARMA  and
N. YADAV
B. K. DAS
Affiliation:
Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India ([email protected])
R. P. SHARMA
Affiliation:
Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India ([email protected])
N. YADAV
Affiliation:
Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India ([email protected])
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Abstract

The paper is concerned with the analytical study of nonlinear coupling of slow Alfvén wave (SW) with ion acoustic waves (IAWs) in high-β and low-β plasmas. Here the pump wave (SW) number density gets perturbed in the presence of IAW. The model equations of IAW and SW turn out to be the modified Zakharov system of equations when the ponderomotive nonlinearities are incorporated in the IAW and SW dynamics. Growth rate of modulational instability has been calculated. The relevance of these investigations for solar wind plasma and solar coronal plasma has also been discussed.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 5 , October 2013 , pp. 833 - 836
Copyright
Copyright © Cambridge University Press 2013 

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