Axial tilt angles of active regions and their polarity separations

Details Axial tilt angles of active regions and their polarity separations Axial tilt angles of active regions and their polarity separations

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993soph..145..105h&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 145, no. 1, p. 105-109.

Physics

16

Faculae, Polarity, Solar Activity, Solar Magnetic Field, Sunspots, Attitude (Inclination), Coriolis Effect, Magnetic Flux

Scientific paper

Sunspot group and magnetic (plage) data are examined to search for a relationship between the tilt angles of active regions and the separations of their leading and following portions. A relationship is found in the sense that larger positive tilt angles are associated with larger polarity separations. This is the direction predicted by recent theoretical work (D'Silva and Choudhuri, 1992). The explanation for this appears to be that smaller surface polarity separations lead to larger magnetic tension forces, which diminish the effect of the Coriolis force that acts to twist rising flux tubes.

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