Timing and occurrence rate of X-ray plasma ejections

Details Timing and occurrence rate of X-ray plasma ejections Timing and occurrence rate of X-ray plasma ejections

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jastp..62.1509o&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 62, Issue 16, p. 1509-1514.

Physics

6

Scientific paper

We examined 126 limb flares formed between October 1991 and August 1998. X-ray plasma ejections were found in 54 flares. All the X-ray plasmoids were detected in images taken before the maximum peak of hard X-ray (HXR) emission or in each of the first image after the HXR peak. In our choice of 57 flares which Yohkoh started to observe before the HXR peak, with the soft X-ray telescope aboard, X-ray plasma ejections were found in /~63-70% of these flares. We found X-ray plasma ejections in 100% of X-class flares and 74-82% of M-class flares, whereas only 31-38% of C-class flares have X-ray plasma ejections. It is difficult to detect X-ray plasma ejections in C-class flares, because the scale size and lifetime of ejections are short. We propose that solar flares including microflares occur through magnetic reconnection and that X-ray plasma ejections are general phenomena associated with solar flares.

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