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Can Resistive Kink Instabilities Drive Simple Loop Flares?

Published online by Cambridge University Press:  27 September 2017

M. Velli ,
G. Emaudi  and
A.W. Hood
M. Velli
Affiliation:
Department of Mathematics, The University, St.Andrews, KY169SS, Fife, Scotland
G. Emaudi
Affiliation:
Istituto di Astronomia, Universita' di Firenze, Italy
A.W. Hood
Affiliation:
Department of Mathematics, The University, St.Andrews, KY169SS, Fife, Scotland

Summary

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A detailed analysis of the kink instability in finite length (inertially line-tied), cylindrically symmetric coronal loops is presented. The correct line-tying boundary conditions within the framework of ideal and resistive magnctohydrodynamics are discussed, and the growth rates of unstable modes and corresponding eigenfunctions are calculated. Resistive kink modes are found to be unstable in configurations where the axial magnetic field undergoes an inversion, resistive effects being confined to a small region around the loop vertex.

Type
Session III: Theory
Information
International Astronomical Union Colloquium , Volume 104 , Issue 2: Solar and Stellar Flares , 1989 , pp. 305 - 308
Copyright
Copyright © Kluwer 1989

References

Cargill, P. J., Hood, A. W. and Migliuolo, S. : 1986, Astrophys. J. 309, 402.Google Scholar
Chinderi, C., Hinaudi, G., MA, S.S. and Van Hoven, G. : 1980, J. Plasma Phys. 24.Google Scholar
Low, B.C.: 1985, Solar Phys. 100, 309.Google Scholar
Velli, M., Hinaudi, G. and Hood, A. W. : 1988, Astrophys. J.,, submittedGoogle Scholar