GMRT observations 2005 November 20 03:42UT

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

Example of RHESSI observations of one of the events

IMAGING: statistics limit imaging. for the shown event, RHESSI can produce 7" resolution images easily, if we integrate over the whole flare duration. for smaller events that can be less.

the images shown below are from TRACE (pre-event background subracted). the candence is not very good, so I show two TRACE images, one before the RHESSI flare, one after. The RHESSI contours are taken inbetween.

TRACE observes some kind of a jet. a trace movie is here:

http://plasma2.ssl.berkeley.edu/~krucker/hessi/gmrt/gmrt_nov20_trace_0340.mpg

SPECTRA: spectral fitting is often difficult. the shown spectrum is fitted with a thermal spectrum at low energies plus a non-thermal (power law) spectrum at higher energies. This allows to estimate thermal and non-thermal flare energies. the fitted temperature is around 12 MK with an emission measure of 5e46cm^-3. the power low is rather soft with a slope of -5.1. values above 20 keV are not significant.