Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279..214l&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 1, p. 214-224
Astronomy and Astrophysics
Astrophysics
10
Ambiguity, Divergence, Magnetic Signatures, Photosphere, Solar Instruments, Solar Magnetic Field, Data Processing, Force-Free Magnetic Fields, Magnetic Field Configurations, Potential Fields
Scientific paper
A systematic numerical study concerning the applicability of a new criterion for the removal of the 180 deg ambiguity in sign of vector magnetograph measurements (Wu & Ai 1990) is presented. This criterion based on the condition divergence of B identical to 0 alone, is free of any assumption concerning the divergence (convergence) of the magnetic field with the height. Some twenty analytical (force-free field and potential field) models covering a variety of possible magnetic configurations are used as test cases for our study. The limitations of the method are also indicated.
Cuperman Sami
Li Jiying
Semel Meir
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