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Flare activity and spotgroup development

Published online by Cambridge University Press:  14 August 2015

V. Bumba ,
L. Křivský ,
M. J. Martres  and
I. Soru-Iscovici
V. Bumba
Affiliation:
Astronomical Institute of the Czechoslovak Academy of Sciences, Ondřejov, C.S.S.R.
L. Křivský
Affiliation:
Astronomical Institute of the Czechoslovak Academy of Sciences, Ondřejov, C.S.S.R.
M. J. Martres
Affiliation:
Observatoire de Paris-Meudon, (92) Meudon, France
I. Soru-Iscovici
Affiliation:
Observatoire de Paris-Meudon, (92) Meudon, France

Abstract

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The flare activity of all active regions having ten or more flares from August 1959 until December 1961 was investigated. We constructed flare-activity curves drawn with the aid of Kleczek's q-index. The characteristic magnetic situation on the Mt. Wilson synoptic charts of photospheric magnetic fields in which the flare-rich active regions developed is described. A flare activity rate ‘quantization’ was found. From the CSSAR magnetic observational material we studied the reorganization of the magnetic fields of active regions which correlated with sudden changes in the rate of flare activity.

Type
Part IV: Cooperative Study of Solar Active Regions (CSSAR)
Information
Symposium - International Astronomical Union , Volume 35: Structure and Development of Solar Active Regions , 1968 , pp. 311 - 317
Copyright
Copyright © Reidel 1968 

References

Bumba, V., Howard, R. (1965) Astrophys. J., 141, 1492.Google Scholar
Bumba, V., Howard, R., Martres, M.J., Soru-Iscovici, I. (1968a) in the present volume, p. 13.CrossRefGoogle Scholar
Bumba, V., Kleczek, J., Olmr, J., Růžičková-Topolová, B., Sýkora, J. (1968b) in the present volume, p. 64.Google Scholar
Kleczek, J. (1952) Publ. de l'Institut Central d'Astronomie, Praha, 22, 12.Google Scholar