1212.4741 (N. Fraija et al.)

On external shock model to explain the high-energy emission: GRB 940217, GRB 941017 and GRB 970217A    [PDF]

N. Fraija, M. M. Gonzalez, J. L. Ramirez, R. Sacahui, W. H. Lee

We present a leptonic model on the external shock context to describe the high-energy emission of GRB 940217, GRB 941017 and GRB 970217A. We argue that the emission consists of two components, one with a similar duration of the burst, and a second, longer-lasting GeV phase lasting hundred of seconds after the prompt phase. Both components can be described as synchrotron self-Compton emission from a reverse and forward shock respectively. For the reverse shock, we analyze the synchrotron self-Compton in the thick-shell case. The calculated fluxes and break energies are all consistent with the observed values.

View original: http://arxiv.org/abs/1212.4741