Pulsational course of the flare in 19th of July 1999

Details Pulsational course of the flare in 19th of July 1999 Pulsational course of the flare in 19th of July 1999

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.505..493m&link_type=abstract

In: SOLMAG 2002. Proceedings of the Magnetic Coupling of the Solar Atmosphere Euroconference and IAU Colloquium 188, 11 - 15 Jun

Physics

Solar Flares

Scientific paper

A series of quasi-periodic pulsations have been detected in the flare of 19th July 1999. The total area occupied by the flare ribbons exhibited temporary increases in the declining phase of the flare at certain moments, the period of the pulses was about 20-30 minutes. The phenomenon has been recognized in the center, as well as at 0.5 and 1.0 Ångstroms on both sides of the H-alpha line. The pulses can be regarded as temporary recoveries in the source of the flare. The results can be interpreted in terms of a mechanism in which part of the energy released by the flare could be recycled to temporarily rebuild the current layer by positive feedback.

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