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Study of an active region of the Sun during three rotation periods∗

Published online by Cambridge University Press:  14 August 2015

Constantin J. Macris  and
T. J. Prokakis
Constantin J. Macris
Affiliation:
Astronomical Institute, National Observatory of Athens, Greece
T. J. Prokakis
Affiliation:
Astronomical Institute, National Observatory of Athens, Greece

Abstract

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The abnormal evolution of an active region during three solar rotations is studied. The high density of flares during the second and third rotation seems to be caused by the collision of new active centres with existing ones.

The increase of the activity is probably due to the disturbance of the magnetic field which became more complex because of the appearance of new centres near the original one.

Type
Part I: General Development of an Active Region
Information
Symposium - International Astronomical Union , Volume 35: Structure and Development of Solar Active Regions , 1968 , pp. 85 - 91
Copyright
Copyright © Reidel 1968 

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