Fig. 1

X-ray spectra observed by the RESIK instrument during impulsive (top and middle) and decay (bottom) phase of an M4.9 flare on January 07, 2003 (Dzifčáková et al. 2008). Synthetic Maxwellian isothermal Si spectra having the same Si xiv λ5.22/Si xiii λ5.68 ratio are indicated by the grey dashed lines. Note that the RESIK observations contain a number of unidentified lines.
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