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Compressible models of fast steady-state magnetic reconnection

Published online by Cambridge University Press:  13 March 2009

M. Jardine  and
E. R. Priest
M. Jardine
Affiliation:
Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH, U.K.
E. R. Priest
Affiliation:
Department of Mathematical Sciences, North Haugh, St Andrews, Fife KY16 9SS, U.K.
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Abstract

We investigate the effects of compressibility on magnetic reconnection, using as a basis the incompressible models of Priest & Forbes and Jardine & Priest. Our results show that compressibility modifies the reconnection process, without changing its essential character. In the region of inflowing plasma, compressibility tends to increase the convergence or divergence of the flow. Also, for regimes with a compression in the inflow the maximum rate of reconnection is increased, while for regimes with an expansion in the inflow the magnetic Mach number at the entrance to the diffusion region is increased. In the region of outflowing plasma the main effects of compressibility are to produce faster and narrower outflow jets, with a lower magnetic field strength.

Type
Research Article
Information
Journal of Plasma Physics , Volume 42 , Issue 1 , August 1989 , pp. 111 - 132
Copyright
Copyright © Cambridge University Press 1989

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