Toward RHESSI Spectroscopic Imaging II : Imaging

Details Toward RHESSI Spectroscopic Imaging II : Imaging Toward RHESSI Spectroscopic Imaging II : Imaging

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spd....37.3703y&link_type=abstract

American Astronomical Society, SPD meeting #37, #37.03

Physics

Scientific paper

The Ramaty High-Energy Solar Spectroscopic Imager (RHESSI) has provided Solar physics with an unprecedented view of high-energy solar flares. RHESSI has observed flares providing high resolution x-ray and gamma-ray spectra and the first spatially resolved gamma-ray images of flares. Despite its successes, RHESSI data analysis has yet to obtain joint high resolution spectroscopy and imaging. Currently, spectroscopy and imaging with RHESSI are disjoint processes. This work is part 2 of the 2 part process leading to a joint spectroscopic imaging algorithm. Here we present two new statistical imaging techniques and their application with RHESSI data. These techniques are designed to take advantage of Poisson nature of the data in the low count regime. This minimizes the loss of data due to the binning required by current imaging methods. We discuss these techniques in the context of Spectroscopic Imaging algorithms for RHESSI.

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