Evolution of a flare activity complex.
Abstract
Follows the development of the McMath 16025+16030 activity complex in its passage across the Sun's disk, using photospheric and chromospheric images of the complex obtained in May 1979 together with magnetograms and data on magnetic fields in spots. Flare activity bursts in the complex are shown to be related to the emergence of new magnetic fluxes of parasitic polarity. The activity complex developed as a single system in which local changes of magnetic structure in one area roused a response in other, often remote areas of the complex. This is confirmed, in particular, by occurrence of sympathetic flares there. The authors conclude that a disturbance is transferred from one flare site to another through a system of Hα loops. The velocity of propagation of a disturbance is 30 - 100 km/s.
- Publication:
-
Kinematics and Physics of Celestial Bodies
- Pub Date:
- 1995
- Bibcode:
- 1995KPCB...11b...1A
- Keywords:
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- Solar Active Regions: Evolution;
- Solar Active Regions: Solar Flares