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Hard X-ray (contour) and soft X-ray (color) images from a limb flare observed by Yohkoh on 1992 Jan. 13. The matrix of images shows, left to right, images from two SXT filters and the temperature and emission measure derived from their ratio; top to bottom, images obtained in three hard X-ray energy bands: 13.9-22.7 keV, 22.7-32.7 keV, and 32.7-52.7 keV. These images are from the early impulsive phase of the flare, and the hard X-ray images show a remarkable coronal source lying above the soft X-ray loop structure. This may constitute the first direct evidence that the primary energy release site for the flare lies in a reconnection site above the apparent soft X-ray loops.
Submitted by T. Kosugi, 18 Dec. 1993