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Transient behavior of flare-associated solar wind. II - Gas dynamics in a nonradial open field regionTransient behavior of flare-associated solar wind in the nonradial open field region is numerically investigated, taking into account the thermal and dynamical coupling between the chromosphere and the corona. A realistic steady solar wind is constructed which passes through the inner X-type critical point in the rapidly diverging region. The wind speed shows a local maximum at the middle, O-type, critical point. The wind's density and pressure distributions decrease abruptly in the rapidly diverging region of the flow tube. The transient behavior of the wind following flare energy deposition includes ascending and descending conduction fronts. Thermal instability occurs in the lower corona, and ascending material flows out through the throat after the flare energy input ceases. A local density distribution peak is generated at the shock front due to the pressure deficit just behind the shock front.
Document ID
19840046429
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Nagai, F. (NASA Marshall Space Flight Center Space Science Laboratory, Huntsville, AL, United States)
Date Acquired
August 12, 2013
Publication Date
March 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 278
ISSN: 0004-637X
Subject Category
SOLAR PHYSICS
Distribution Limits
Public
Copyright
Other