Review Article

Physics of Gamma-Ray Bursts Prompt Emission

Figure 4

Spectra of GRB 080916C at the five time intervals (a–e) defined in Figure 3 are fitted with a “Band” function. (a) Count spectrum for NaI, BGO, and LAT in time bin b. (b) The model spectra in units for all five time intervals, in which a flat spectrum would indicate equal energy per decade of photon energy, and the changing shapes show the evolution of the spectrum over time. The “broken power law” figure adopted from Abdo et al. [57].
(a)
(b)