Synchrotron Cooling in Energetic Gamma-Ray Bursts Observed by the Fermi Gamma-Ray Burst Monitor

Hoi-Fung Yu, Jochen Greiner, Hendrik van Eerten +15

We study the time-resolved spectra of eight GRBs observed by Fermi GBM in its first five years of mission, with 1 keV - 1 MeV fluence $f>1.0\times 10^{-4}$ erg cm${}^{-2}$ and signal-…