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Modeling Images and Spectra of a Solar Flare Observed by RHESSI on 20 February 2002We 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 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.
Document ID
20040034076
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Sui, Linhui
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Holman, Gordon D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Dennis, Brian R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Krucker, Saem
(California Univ. Berkeley, CA, United States)
Schwartz, Richard A.
(Science Systems and Applications, Inc. Greenbelt, MD, United States)
Tolbert Kim
(Science Systems and Applications, Inc. Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2002
Subject Category
Solar Physics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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