Morphological properties of major spotless two-ribbon flare on 23 April 1981

Details Morphological properties of major spotless two-ribbon flare on 23 April 1981 Morphological properties of major spotless two-ribbon flare on 23 April 1981

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983sssmp..26..972c&link_type=abstract

Scientia Sinica, Series A - Mathematical, Physical, Astronomical and Technical Sciences (ISSN 0253-5831), vol. 26, Sept. 1983, p

Mathematics

Logic

1

Astronomical Photography, H Alpha Line, Solar Flares, Brightness Distribution, Filaments, Morphology, Ribbons

Scientific paper

Morphological properties of the major spotless two-ribbon flare on April 23, 1981 are described. It is shown that the spotless two-ribbon flare is associated with an activation and a sudden disappearance of the quiescent filament lying in the region. At the same time, it is also found that the fibrils surrounding the filament have suffered a great change for 24 hr before the flare. They might have changed into being parallel to the filament from being perpendicular to it. Finally, a qualitative discussion about these main morphological properties is presented.

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