Flares and non-potentiality of AR 11158
Abstract
Five non-potential parameters are calculated to investigate the temporal and spatial variations of vector magnetic field in active region 11158. An area that had evident changes of the azimuth of the vector magnetic field was found. The sunspot rotation may lead to an increase of the non-potentiality. Rapid and prominent increases are found in the variations of unsigned helicity.
- Publication:
-
Solar and Astrophysical Dynamos and Magnetic Activity
- Pub Date:
- July 2013
- DOI:
- Bibcode:
- 2013IAUS..294..573S
- Keywords:
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- Sun: flares;
- Sun: magnetic fields;
- Sun: photosphere