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Active regions on the Sun with high flare productivity and strong geomagnetic efficiency

Published online by Cambridge University Press:  14 March 2005

G.A. Porfir'eva ,
G.V. Yakunina  and
A.B. Delone
G.A. Porfir'eva
Affiliation:
Sternberg Astronomical Institute, Moscow State University, Universitetskij Prospect 13, Moscow 119992, Russia email: yakunina@sai.msu.ru
G.V. Yakunina
Affiliation:
Sternberg Astronomical Institute, Moscow State University, Universitetskij Prospect 13, Moscow 119992, Russia email: yakunina@sai.msu.ru
A.B. Delone
Affiliation:
Sternberg Astronomical Institute, Moscow State University, Universitetskij Prospect 13, Moscow 119992, Russia email: yakunina@sai.msu.ru
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Abstract

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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 S$\le 1000\, \mu h$ seem to differ from the SARs being large $\delta$-spots (SARs-$\delta$) not only by their parameters but also by relations between them.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS223 , June 2004 , pp. 295 - 296
Copyright
© 2004 International Astronomical Union