Computer Science
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994kofu.symp..161i&link_type=abstract
In: Proceedings of Kofu Symposium, Kofu, Japan, Sept. 6-10, 1993, p.161-164.
Computer Science
2
Scientific paper
Observations with the Soft X-ray and Hard X-ray Telescopes aboard Yohkoh of a simple solar flare on 9 December, 1992 at ~ 10:40 UT are discussed. Soft X-ray images reveal an appearance of a secondary loop, located ~ 7 arcsec to the east of and almost parallel to the original loop, about ten minutes prior to the flare, and their merging just before the onset of the hard X-ray flare. Hence this flare provides a chance to examine the solar flare caused by the two-loop interaction mechanism. It is found (i) that the loop-top portion near the interaction region brightens in the 14-23 keV hard X-rays in the early stage of the flare, and (ii) that the 23-33 keV hard X-ray emission originates dominantly from two compact sources at the two ends of the merging loop. These observations suggest that high-energy electrons are produced at the interaction site near the loop top, and that they precipitate towards the footpoints along the loop.
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