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Regularized Energy-Dependent Solar Flare Hard X-Ray Spectral Index View all abstracts by submitter

Eduard Kontar   Submitted: 2005-01-20 13:23

The deduction from solar flare X-ray photon spectroscopic data of the energy dependent model-independent spectral index is considered as an inverse problem. Using the well developed regularization approach we analyze the energy dependency of spectral index for a high resolution energy spectrum provided by Ramaty High Energy Solar Spectroscopic Imager (RHESSI). The regularization technique produces much smoother derivatives while avoiding additional errors typical of finite differences. It is shown that observations imply a spectral index varying significantly with energy, in a way that also varies with time as the flare progresses. The implications of these findings are discussed in the solar flare context.

Authors: E.P. Kontar and A.L. MacKinnon
Projects: RHESSI

Publication Status: Solar Physics, (in press)
Last Modified: 2005-01-20 13:23
Go to main E-Print page  Tracing Magnetic Helicity from the Solar Corona to the 

Interplanetary Space  The spectral evolution of impulsive solar X-ray flares. II.Comparison of
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