Fig. 2

Emission spectra of X9.3 flare at 12 UT. The red solid line shows the FISM spectrum and the green solid line shows the 1D Hydro flare model spectrum. The blue solid line is the sum of the 1D Hydro flare model spectrum (green solid line) and the background (red dashed line). Because the 1D Hydro flare model does not consider the continuum component, there is no continuum component around 70–90 nm