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Phase-Mixing and Dissipation of Standing Shear Alfvén Waves

Published online by Cambridge University Press:  05 March 2013

K. Karami  and
Z. Ebrahimi
K. Karami*
Affiliation:
Department of Physics, University of Kurdistan, Pasdaran St., PO Box 66177-15175, Sanandaj, Iran Research Institute for Astronomy & Astrophysics of Maragha (RIAAM), PO Box 55134-441, Maragha, Iran
Z. Ebrahimi
Affiliation:
Department of Physics, University of Kurdistan, Pasdaran St., PO Box 66177-15175, Sanandaj, Iran
*
CCorresponding author. Email: kkarami@uok.ac.ir
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Abstract

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We study the phase mixing and dissipation of a packet of standing shear Alfvén waves localized in a region with non-uniform Alfvén background velocity. We investigate the validity of the exponential damping law in time, exp (–At3), presented by Heyvaerts & Priest (1983) for different ranges of Lundquist, S, and Reynolds, R, numbers. Our numerical results shows that it is valid for (R,S) ≥ 107.

Keywords

sun: coronasun: magnetic fieldssun: oscillations
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 26 , Issue 4 , 2009 , pp. 448 - 453
Copyright
Copyright © Astronomical Society of Australia 2009

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