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Potential models of the unipolar sunspot magnetic field

โœ Scribed by V. V. Denisenko; V. A. Kotov; V. A. Romanov; V. S. Sokolov

Publisher
Springer
Year
1982
Tongue
English
Weight
624 KB
Volume
81
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

The potential models of the unipolar sunspot magnetic field are calculated on the basis of magnetographic measurements of the magnetic field made in the three spectral lines of different intensities, H c~, Ca 1 26103 and Fe 1 2 4808. The computed distributions of the magnetic field vector are compared with actual distributions observed at these three levels. It is shown that the electric current density in the spot reaches values up to 105 CGSE in the volume contained between formation depths of two pairs of lines, Fe 1 24808-Cai 2 6103 and Fe 1 24808 -Hc~. Therefore, the magnetic field of the spot deviates strongly from a potential configuration. To the contrary, at higher levels, in the semi-infinite volume restricted at the bottom by the hydrogen Hc~-line, the field appears to be quite close to a potential one.

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