Electric current in a unipolar sunspot with an untwisted field

Details Electric current in a unipolar sunspot with an untwisted field Electric current in a unipolar sunspot with an untwisted field

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.2273o&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, Nov. 1990, p. 2273-2276. Research supported by the U.S. National Researc

Astronomy and Astrophysics

Astronomy

4

Electric Current, Magnetohydrostatics, Solar Atmosphere, Sunspots, Astronomical Models, Magnetic Fields, Photosphere, Radial Distribution

Scientific paper

The return flux (RF) sunspot model is applied to a round, unipolar sunspot observed by H. Kawakami (1983). Solving the magnetohydrostatic problem using the gas pressure deficit between the umbral and quiet-sun atmospheres as a source function, a distribution of electric current density in an untwisted, unipolar sunspot as a function of height and radial distance from the sunspot center is observed. Maximum electric current density is about 32 mA/sq m at the bottom of the sunspot.

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