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

Fraija, N., González, M. M., Ramirez, J. L. ORCID: https://orcid.org/0000-0001-7666-7440, Sacahui, R. and Lee, W. H. (2012) On external shock model to explain the high-energy emission: GRB 940217, GRB 941017 and GRB 970217A. AIP conference proceedings, 1505. 681. ISSN 0094-243X doi: 10.1063/1.4772351

Abstract/Summary

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.