Simbol-X capability of detecting the non-thermal emission of stellar   flares
  We investigate the capability of detecting, with Simbol-X, non-thermal emission during stellar flares, and distinguishing it from hot thermal emission. We find that flare non-thermal emission is detectable when at least ~20 cts are detected with the CZT detector in the 20-80 keV band. Therefore Simbol-X will detect the non-thermal emission from some of the X-ray brightest nearby stars, whether the thermal vs. non-thermal relation, derived for solar flares, holds. 
C. Argiroffi (1 and 2), G. Micela (2), A. Maggio (2) ((1) Dip. di   Scienze Fisiche ed Astronomiche, Universita di Palermo, ...