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Dissipative instabilities of magnetic neutral layers with velocity shear

Published online by Cambridge University Press:  13 March 2009

M. Dobrowolny ,
P. Veltri  and
A. Mangeney
M. Dobrowolny
Affiliation:
Istituto di Fisica dello Spazio Interplanetario, CNR, C.P.27, 00044 Frascati, Italy and Istituto di Fisica, Università di Roma, Italy
P. Veltri
Affiliation:
Dipartimento di Fisica, Università della Calabria, Cosenza, Italy
A. Mangeney
Affiliation:
Dept. Recherches Spatiales, Observatoire de Meudon, 02190 Meudon, France
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Abstract

We consider, in the framework of dissipative MHD, the general problem of instability of magnetic neutral sheets in the presence of velocity shear. Both resistivity and viscosity are included in the treatment. We show that velocity shear and/or viscosity introduce different orderings with respect to resistive tearing modes and that the classical tearing modes represent a singular case. Possible orderings for growth rates are discussed and a specific example containing the effect of velocity shear is treated in detail.

Type
Research Article
Information
Journal of Plasma Physics , Volume 29 , Issue 3 , June 1983 , pp. 393 - 407
Copyright
Copyright © Cambridge University Press 1983

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References

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