Hostname: page-component-77c89778f8-vpsfw Total loading time: 0 Render date: 2024-07-16T13:33:20.410Z Has data issue: false hasContentIssue false
  • English
  • Français

Storage and Release of Magnetic Energy in a Force-Free Field

Published online by Cambridge University Press:  19 July 2016

J.J. Aly
J.J. Aly*
Affiliation:
Service d'Astrophysique Centre d'Etudes Nucléaires de Saclay 91191 Gif-sur-Yvette Cedex France

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

For a 3D force-free field occupying a half-space D = {z > 0}, we discuss: i) the storage of free magnetic energy when the field evolves quasi-statically as a consequence of motions imposed to its footpoints on the plane {z = 0}; ii) the release of this energy during a reconnection process implying a rearrangement of the lines which is either local, occuring in the neighbourhood of spontaneously formed current sheets, or global, occuring in an explosive flare-like way.

Type
VII. Magnetic Reconnection and Coronal Evolution
Information
Symposium - International Astronomical Union , Volume 142: Basic Plasma Processes on the Sun , 1990 , pp. 313 - 318
Copyright
Copyright © Kluwer 1990 

References

REFERENCES

Aly, J.J. (1984). “On some properties of force-free magnetic fields in infinite regions of space”, Ap. J. 283, 349.CrossRefGoogle Scholar
Aly, J.J. (1987). “On the existence of a topological heating mechanism for a plasma in a sheared magnetic field”, Astron. Ap. (submitted).Google Scholar
Aly, J.J. (1988). “Some properties of the solutions of a non-linear boundary value problem for a force-free field in an infinite region of space. I. Energy estimates”, Astron. Ap. 203, 183.Google Scholar
Aly, J.J. (1989a). “Some properties of finite energy constant-α force-free fields”, Preprint.Google Scholar
Aly, J.J. (1989b). “The stability of a line-tied force-free magnetic field in an unbounded region of space”, Phys. of Fluids (in press).CrossRefGoogle Scholar
Aly, J.J. (1989c). “Quasi-static evolution of a force-free magnetic field”, Comp. Phys. Comm. (in press).CrossRefGoogle Scholar
Antiochos, S. (1989). “Magnetic topology and current sheet formation”, in Haisch, B.M. and Rodono, M. (eds.), Solar and Stellar Flares (Poster Papers, IAU Coll. n° 104), Catania Astrophysical Observatory, p. 277.Google Scholar
Parker, E. (1989). “Solar and stellar magnetic fields and atmospheric structures: theory”, in Haisch, B.M. and Rodono, M. (eds.), Solar and Stellar Flares (IAU Coll. n° 104), Kluwer Academic Publishers, Dordrecht, p. 271.CrossRefGoogle Scholar