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The calculation of force-free fields from discrete flux distributionsThis paper presents particularly simple mathematical formulas for the calculation of force-free fields of constant alpha from the distribution of discrete sources on a flat surface. The advantage of these formulas lies in their physical simplicity and the fact that they can be easily used in practice to calculate the fields. The disadvantage is that they are limited to fields of 'sufficiently small alpha'. These formulas may be useful in the study of chromospheric magnetic fields by the comparison of high-resolution H-alpha photographs and photospheric magnetograms.
Document ID
19760046880
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Sheeley, N. R., Jr.
(Kitt Peak National Observatory Tucson, AZ, United States)
Harvey, J. W.
(Kitt Peak National Observatory Tucson, Ariz., United States)
Date Acquired
August 8, 2013
Publication Date
December 1, 1975
Publication Information
Publication: Solar Physics
Volume: 45
Subject Category
Solar Physics
Accession Number
76A29846
Distribution Limits
Public
Copyright
Other

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