Variation of the azimuth of sunspot magnetic field with depth

Details Variation of the azimuth of sunspot magnetic field with depth Variation of the azimuth of sunspot magnetic field with depth

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990acasn..31...48y&link_type=abstract

(Acta Astronomica Sinica, vol. 31, no. 1, 1990, p. 48-55) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 14, Sept. 19

Physics

Optics

Azimuth, Magnetic Field Configurations, Solar Magnetic Field, Sunspots, Lines Of Force, Magneto-Optics, Three Dimensional Models

Scientific paper

In order to construct three-dimensional sunspot magnetic field models, the azimuth of the field chi and its possible variation with depth must be ascertained. A method of finding the variation of chi with depth is proposed. For a fixed point in the sunspot, the two Stokes parameters Q and U are measured at different parts of a magneto-sensitive line and then a refined version of the azimuth diagram, first suggested by Makita, is drawn. If the locus in this diagram contains loops, it may be concluded that chi varies systematically with depth; otherwise the locus will have a simple shape like a parabola. This method can be applied to the weaker fields outside sunspots, provided the detector is sufficiently sensitive.

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