Modeling Images and Spectra of a Solar Flare Observed by RHESSI on 20 February 2002

Details Modeling Images and Spectra of a Solar Flare Observed by RHESSI on 20 February 2002 Modeling Images and Spectra of a Solar Flare Observed by RHESSI on 20 February 2002

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002soph..210..245s&link_type=abstract

Solar Physics, v. 210, Issue 1, p. 245-259 (2002).

Physics

22

Scientific paper

We have analyzed a C7.5 limb flare observed by RHESSI on 20 February 2002. The RHESSI images appear to show two footpoints and a loop-top source. Our goal was to determine if the data are consistent with a simple steady-state model in which high-energy electrons are continuously injected at the top of a semicircular flare loop. A comparison of the RHESSI images with simulated images from the model has made it possible for us to identify spurious sources and fluxes in the RHESSI images. We find that the RHESSI results are in many aspects consistent with the model if a thermal source is included between the loop footpoints, but there is a problem with the spectral index of the loop-top source. The thermal source between the footpoints is likely to be a low-lying loop interacting with the northern footpoint of a higher loop containing the loop-top source.

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