Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..271a&link_type=abstract
In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze
Physics
Albedo, Electron, Hard X-Ray, Flare
Scientific paper
Photospheric Compton backscatter (albedo) makes a significant contribution to observed hard X-ray (HXR) spectral fluxes over the RHESSI energy range and should be allowed for in spatially integrated HXR spectral interpretation. The high HXR spectral resolution of RHESSI creates the chance for precise study of source electron spectra provided the observed spectra are well corrected for non-primary effects at the sun including albedo, directivity, source ionisation variations and the like. However the full correction problem is nonlinear and messy but we offer a simple approximate first order correction procedure for global HXR spectra based upon empirical fits to published albedo simulations. We also illustrate the impact of this correction on inferred electron spectra for the thin and thick target models with the Kramers cross-section.
Alexander Calum R.
Brown John C.
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