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Three-dimensional force-free looplike magnetohydrodynamic equilibriaComputations of three-dimensional force-free magnetohydrodynamic (MHD) equilibria, del x B = lambdaB with lambda = lambda(sub 0), a constant are presented. These equilibria are determined by boundary conditions on a surface corresponding to the solar photosphere. The specific boundary conditions used correspond to looplike magnetic fields in the corona. It is found that as lambda(sub 0) is increased, the loops of flux become kinked, and for sufficiently large lambda(sub 0), develop knots. The relationship between the kinking and knotting properties of these equilibria and the presence of a kink instability and related loss of equilibrium is explored. Clearly, magnetic reconnection must be involved for an unknotted loop equilibrium to become knotted, and speculations are made about the creation of a closed hyperbolic field line (X-line) about which this reconnection creating knotted field lines is centered.
Document ID
19950034160
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Finn, John M.
(Univ. of Maryland, College Park, MD United States)
Guzdar, Parvez N.
(Univ. of Maryland, College Park, MD United States)
Usikov, Daniel
(Univ. of Maryland, College Park, MD United States)
Date Acquired
August 16, 2013
Publication Date
May 20, 1994
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 427
Issue: 1
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
95A65759
Funding Number(s)
CONTRACT_GRANT: NAG5-1356
Distribution Limits
Public
Copyright
Other

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