Filament activity in a quiet region flare

Details Filament activity in a quiet region flare Filament activity in a quiet region flare

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993japa...14...45s&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 14, no. 1, p. 45-52.

Astronomy and Astrophysics

Astrophysics

1

Solar Flares, Solar Prominences, Coronal Loops, H Alpha Line, Sunspots

Scientific paper

We have taken the case of a circular H-alpha filament observed on May 9, 1979 erupting into a double-ribbon flare associated with a nonspot region. The plage motions are responsible for the filament reorientation and, here as a special case, wherein the filament attains a clear circular shape before the onset of a flare. We conclude that the change in the orientation of the H-alpha filament marks the instability giving rise to the flare.

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