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Convective flows around sunspot-like objectsCalculations of convective flows around objects in the outer layers of the sun that have characteristics similar to those of sunspots are presented. It is assumed that these objects are allowed to radiatively exchange heat with their surroundings, but convective motions and exchange are absent. The flow structure around the object, and the question of the overall balance or redistribution of the emerging heat flux as suggested by earlier empirical models are discussed. In all the cases studied, there was a significant increase in the kinetic energy flux and thus the lateral transport of the energy flux surrounding the object. This mainly occurred below the object to allow the heat to appear at the surface, with some time delay. The percentage reduction in the specific intensity agrees well with the observed deficits for pores or small sunspot-type regions. The diverted heat flow was not totally blocked by the object. Because the sunspot-like object is magnetic and the convective flow closely surrounds it, some conversion between internal, kinetic, and magnetic energy is likely.
Document ID
19920028986
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Fox, Peter A.
(Yale Univ. New Haven, CT, United States)
Sofia, Sabatino
(Yale University New Haven, CT, United States)
Chan, Kwing L.
(Applied Research Corp. Landover, MD, United States)
Date Acquired
August 15, 2013
Publication Date
September 1, 1991
Publication Information
Publication: Solar Physics
Volume: 135
ISSN: 0038-0938
Subject Category
Solar Physics
Accession Number
92A11610
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-88-0054
CONTRACT_GRANT: NAGW-778
CONTRACT_GRANT: NAGW-777
Distribution Limits
Public
Copyright
Other

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