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Anomalous resistivity and the evolution of magnetic field topologyThis paper explores the topological restructuring of a force-free magnetic field caused by the hypothetical sudden onset of a localized region of strong anomalous resistivity. It is shown that the topological complexity increases, with the primitive planar force-free field with straight field lines developing field lines that wrap half a turn around each other, evidently providing a surface of tangential discontinuity in the wraparound region. It is suggested that the topological restructuring contributes to the complexity of the geomagnetic substorm, the aurora, and perhaps some of the flare activity on the sun, or other star, and the Galactic halo.
Document ID
19930071263
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Parker, E. N. (Chicago Univ. IL, United States)
Date Acquired
August 16, 2013
Publication Date
September 1, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 414
Issue: 1
ISSN: 0004-637X
Subject Category
PLASMA PHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-2122
Distribution Limits
Public
Copyright
Other