Extended Data Fig. 3: Spectral energy distribution at time interval III.
From: Gamma rays from a reverse shock with turbulent magnetic fields in GRB 180720B
The solid lines in the low-energy and high-energy bands represent the synchrotron and SSC components from the forward shock with the “analytical” model, respectively. The red area corresponds to the 1-σ confidence region from the best-fit power-law function for the Swift-XRT. Note that the XRT observation was not actually performed in the time interval and we used the interpolated flux before and after the interval (this interpolation is reasonable because the photon index is almost constant from T0 + 104 s to 105 s, as shown in the bottom panel of Fig. 1. The blue arrow represents the 90% upper limit in the Fermi-LAT range. The red point represents the optical flux observed by the optical telescope. The purple area represents the 1-σ confidence region from the best-fit power-law function for the HESS.
