Determination of Electron Flux Spectrum Images in Solar Flares using Regularized Analysis of Hard X-Ray Source Visibilities

Details Determination of Electron Flux Spectrum Images in Solar Flares using Regularized Analysis of Hard X-Ray Source Visibilities Determination of Electron Flux Spectrum Images in Solar Flares using Regularized Analysis of Hard X-Ray Source Visibilities

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.3704e&link_type=abstract

American Astronomical Society Meeting 210, #37.04; Bulletin of the American Astronomical Society, Vol. 39, p.151

Astronomy and Astrophysics

Astronomy

Scientific paper

We introduce a new method for imaging spectroscopy analysis of hard X-ray emission during solar flares. The new method allows the construction of images of both count and electron flux spectra that are smoothed with respect to energy, and so more suitable for further analysis. The procedure involves regularized inversion of the count visibility spectra (i.e., the two-dimensional spatial Fourier transforms of the spectral image) to obtain smoothed forms of the corresponding electron visibility spectra. We apply the method to a solar flare observed on February 20, 2002 by the RHESSI instrument. The event is characterized by two bright footpoints with a "strand" of more diffuse emission between them. We find that the electron flux spectra at the footpoints are systematically harder than those in the region between the footpoints, and that the observed degree of hardening is consistent with that produced by Coulomb collisions between an acceleration site high in the corona and the dense chromospheric footpoint regions.

Affiliated with

Also associated with

No associations

Rating

Determination of Electron Flux Spectrum Images in Solar Flares using Regularized Analysis of Hard X-Ray Source Visibilities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Determination of Electron Flux Spectrum Images in Solar Flares using Regularized Analysis of Hard X-Ray Source Visibilities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determination of Electron Flux Spectrum Images in Solar Flares using Regularized Analysis of Hard X-Ray Source Visibilities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1030317