Origin of twist of magnetic fields in solar active regions

Details Origin of twist of magnetic fields in solar active regions Origin of twist of magnetic fields in solar active regions

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pbeio..37....9t&link_type=abstract

Astrophysics Reports. Publications of the Beijing Astronomical Observatory, No. 37, p. 9 - 14 (2001). In: Proceedings of the Eig

Astronomy and Astrophysics

Astrophysics

Solar Active Regions, Solar Magnetic Fields, Tilt And Twist

Scientific paper

In this paper, we show oberved properties of tilt of magnetic polarity axis and twist of bipolar active regions magnetic fields, using magnetograph data at Huairou, Beijing Astronomical Observatory. We find that the variation of the twist almost follows that of the tilt angle. It is commonly believed that the tilt of a bipolar active region is produced by Coriolis force acting on a rising flux tube through the convection zone. Therefore, we deduce that origin of the twist of magnetic fields should be the same as that of tilt of bipolar magnetic fields. In another word, they are primarily produced by Coriolis force acting on a rising flux tube through convection zone.

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