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Validity of the field line resonance expansionThe field line resonance expansion is studied with a magnetohydrodynamic (MHD) model applicable to earth's magnetotail. Using a Frobenius series solution, this expansion is found to be inconsistent. The inconsistency is seen by evaluating the terms in the model equations that the expansion neglects as small. Their effect is to provide a solution more singular than that determined by the expansion procedure. A tentative alternative expansion procedure, retaining these neglected terms approximately, yields a nonsingular solution, suggesting that resonant mode conversion rather than field line resonance is the appropriate phenomenon.
Document ID
19920073942
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hansen, P. J.
(NASA Headquarters Washington, DC United States)
Goertz, C. K.
(Iowa, University Iowa City, United States)
Date Acquired
August 15, 2013
Publication Date
September 1, 1992
Publication Information
Publication: Physics of Fluids B
Volume: 4
Issue: 9 Se
ISSN: 0899-8221
Subject Category
Plasma Physics
Accession Number
92A56566
Funding Number(s)
CONTRACT_GRANT: NAGW-970
Distribution Limits
Public
Copyright
Other

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