Hard X-ray and White Light Observations of the August 25, 2001 X Flare

An X5.3 flare occurred about 16:31 UT on 2001 August 25 and was well observed by the Yohkoh and TRACE spacecraft. The flare showed gamma-ray emission, nuclear lines, and was a dramatic white light flare seen in TRACE data. A preliminary analysis of the hard X-ray images from the Yohkoh/HXT instrument shows two clear footpoints and a moving HXR source in this very energetic flare. The moving hard X-ray source appears to move along a magnetic separatrix at 400 km/sec. We will discuss the hard X-ray and white light structure of this flare and discuss the energetics and possible mechanisms for the formation of the TRACE white light emission.