Physics of Gamma-Ray Bursts Prompt Emission

Figure 5

Histograms of the distributions of “Band” model free parameters: the low energy slope (a), peak energy (b), and the high energy slope, (c). The data represent 3800 spectra derived from 487 GRBs in the first FERMI-GBM catalogue. The difference between solid and dashed curves is the goodness of fits, the solid curve represent fits which were done under minimum criteria, and the dash curves are for all GRBs in the catalogue. Figure adopted from Goldstein et al. [71].

(a)

(b)

(c)