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

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mwoc.conf..297o&link_type=abstract

Multi-Wavelength Observations of Coronal Structure and Dynamics -- Yohkoh 10th Anniversary Meeting. Proceedings of the conferenc

Physics

1

Scientific paper

We examined 126 limb flares between October 1991 and August 1998. X-ray plasma ejections are found in 54 flares. All X-ray plasmoids are detected in images taken before the maximum peak of hard X-ray (HXR) emission or in each first image after the HXR peak. If we choose 57 flares which soft X-ray telescope aboard Yohkoh started to observe before the HXR peak, X-ray plasma ejections are found in about 63-70% of these flares. We find 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 is short and the lifetime of ejections is 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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