Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pasj...60...85o&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.60, No.1, pp.85--93
Astronomy and Astrophysics
Astronomy
8
Activity, Sun: Corona, Sun: Filaments, Sun: Flares, Sun: X-Rays, Gamma Rays
Scientific paper
A 1993 May 14 flare was associated with both X-ray plasma ejection as hot plasmoid ejection and Hα filament eruption as cool plasma ejection. The flare proceeded through two stages according to a GOES soft X-ray observation. In the first stage, an X-ray plasma ejection, an Hα filament eruption, and a chain of pointlike Hα brightenings occurred. In the second stage, an Hα two-ribbon flare and an X-ray arcade structure were seen in Hα and soft X-ray images, respectively. The X-ray plasmoid and the eruptive Hα filament were in the same current sheet. The X-ray plasmoid started to rise with a speed of ˜270kms-1 temporally after the Hα filament eruption. The top part of the X-ray plasmoid moved together with the eruptive filament. They were then decelerated before the main peak of the hard X-ray emission. The X-ray plasmoid was not a bloblike feature, as the eruptive Hα filament, but a loop structure. Our results indicate that the X-ray plasmoid was not the heated part of the Hα filament.
Ohyama Masamitsu
Shibata Kazunari
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