External forward shock origin of high-energy emission for three gamma-ray bursts detected by Fermi
External forward shock origin of high-energy emission for three gamma-ray bursts detected by Fermi
We analyze the >100MeV data for 3 GRBs detected by Fermi (GRBs 080916C, 090510, 090902B) and find that these photons were generated via synchrotron emission in the external forward shock. We arrive at this conclusion by four different methods as follows. (1) We check the light curve and spectral behavior …