Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990baicz..41..368a&link_type=abstract
Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 41, Dec. 1990, p. 368-373.
Astronomy and Astrophysics
Astronomy
2
Astronomical Photography, H Alpha Line, Pinch Effect, Solar Flares, Solar Prominences, Magnetic Disturbances, Photosphere, Solar Atmosphere, Solar Magnetic Field
Scientific paper
The H-alpha morphology of the white-light impulsive 1B/X2 flare of June 4, 1982, exhibits a pinch-effect signature in the form of a conical plasmoid H-alpha flare structure feature which grew in size at 200 km/sec along the cone's axis (from base to apex). The base of the emission cone was formed by two close ribbons. A narrow emission filament was located along the axis of the flare cone. The flare spray was generated as the final product of the flare cone's development; it 'gushed' from the top of the axial high-energy descending filament. After the generation of the flare spray, an abrupt decrease was observed in the flare cone's length as well as in its H-alpha intensity.
Antalová Anna
Ogir' M. B.
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