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An apparent highly sheared magnetic field structure generated by a subphotospheric current system
Author(s) -
Linke J.,
Bachmann G.
Publication year - 1989
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113100318
Subject(s) - magnetic field , azimuth , physics , current (fluid) , magnetic structure , line (geometry) , field (mathematics) , astrophysics , optics , magnetization , geometry , quantum mechanics , mathematics , pure mathematics , thermodynamics
Using Potsdam vector magnetograms and a force‐free model, we have investigated the magnetic field structure of the active region BBR 18474 of 1982 July 15 and 1982 July 16. By comparison of the azimuths of the current‐free model of magnetic field structure in the central part of this active region with the map of the azimuth values estimated from the observation we find a good qualitative agreement. Additional earlier results have shown that the apparence of highly sheared magnetic field structure near the neutral line in the central part of this active region may be a simulated effect generated by a subphotospheric current system.