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Heating of the corona by magnetic singularitiesTheoretical models of current-sheet formation and magnetic heating in the solar corona are examined analytically. The role of photospheric connectivity in determining the topology of the coronal magnetic field and its equilibrium properties is explored; nonequilibrium models of current-sheet formation (assuming an initially well connected field) are described; and particular attention is given to models with discontinuous connectivity, where magnetic singularities arise from smooth footpoint motions. It is shown that current sheets arise from connectivities in which the photospheric flux structure is complex, with three or more polarity regions and a magnetic null point within the corona.
Document ID
19910039585
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Antiochos, Spiro K.
(U.S. Navy, E. O. Hulburt Center for Space Research, Washington DC, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Societa Astronomica Italiana, Memorie
Volume: 61
Issue: 2, 19
ISSN: 0037-8720
Subject Category
Solar Physics
Accession Number
91A24208
Distribution Limits
Public
Copyright
Other

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