Active regions on the Sun with high flare productivity and strong geomagnetic efficiency
Abstract
Relations between the geomagnetic A_p-index and magnetic and flare parameters of the super active regions (SARs) are analysed. The small and mean SARs having the spot areas Sle 1000 mu h seem to differ from the SARs being large delta-spots (SARs-delta) not only by their parameters but also by relations between them.
- Publication:
-
Multi-Wavelength Investigations of Solar Activity
- Pub Date:
- 2004
- DOI:
- 10.1017/S1743921304006003
- Bibcode:
- 2004IAUS..223..295P