April 21 X1.5 flare

QUESTIONS/COMMENTS/ETC. to Säm Krucker, krucker@ssl.berkeley.edu, 510 643 3101

Overview plot: GOES lightcurves, RHessi spectrogram, WIND/WAVES

NOTE: the shutter is moving in and out several time changing the flux significantly.

at 1 AU, an impulisive electron event is observed

NOTE: bottom shows WIND/3DP 30-300 keV electron observations.

Flare location

NOTE: image shows flare location in low resolution. Hence, the shown source is spatially not resolved.

10-15 keV CLEAN image at 01:15:30

NOTE: source is above the limb (limb is given by the thin red line)

50-100 keV CLEAN image at 01:15:30

NOTE: 50-100 keV source is at a different location. it is on the disk.

CLEAN image at 01:15:30 at different energies

NOTE: 50-100 keV source is at a different location. it is on the disk.

more images can be found at June Sato's page:

http://solar.physics.montana.edu/~sato/HESSI/20020421X/20020421.html