April 18, 2001
The source was distinguished by its departure from the Neupert Effect - hard X-rays peaked late, and were much brighter than expected. limb position
The hard X-ray source matched the position of a compact microwave source judged to be free-free emission. height vs time
The source exhibited an outward motion unprecedented for a hard X-ray source, and one which matched the motion of the unusual microwave source. The moving structures were embedded within a CME and (arguably) were associated with erupting filament material. Stackplot
The moving hard X-ray/microwave source coincided with a slow-drift decimetric source that preceded the associated Type II (?) burst. Microwave positions

Nobeyama 17 GHz

HXT 23-33 keV