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On the electric field model for an open magnetosphereWe have developed a new canonical separator line type magnetospheric magnetic field and electric field model for use in magnetospheric calculations, we determine the magnetic and electric field by controlling the reconnection rate at the subsolar magnetopause. The model is applicable only for purely southward interplanetary magnetic field (IMF). We have obtained a more realistic magnetotail configuration by applying a stretch transformation to an axially symmetric field solution. We also discuss the Stern singularity in which there is an electric field singlarity in the canonical separate line models for B(sub y) not = to 0 by using a new technique that solves for the electric field along a field line directly instead of determining it by a potential mapping. The singularity not only causes an infinite electric field on the polar cap, but also causes the boundary conditions at plus infinity and minus infinity in the solar wind to contradict each other. This means that the canonical separator line models do not represent the open magnetosphere well, except for the case of purely southward IMF.
Document ID
19950046655
Document Type
Reprint (Version printed in journal)
Authors
Wang, Zhi (California Univ. Los Angeles, CA, United States)
Ashour-Abdalla, Maha (California Univ. Los Angeles, CA, United States)
Walker, Raymond J. (California Univ. Los Angeles, CA, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: A12
ISSN: 0148-0227
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSF ATM-91-12007
CONTRACT_GRANT: NAG5-1408
Distribution Limits
Public
Copyright
Other