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arXiv · 2005.12383

Origin of sub-TeV afterglow emission from gamma-ray bursts GRB 190114C and GRB 180720B

Sarira Sahu·Carlos E. Lopez Fortin
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Abstract

The detection of GRB 180722B and GRB 190114C in sub-TeV gamma-rays has opened up a new window to study gamma-ray bursts in high energy gamma-rays. Recently it is shown that the synchrotron and inverse Compton processes are responsible for the production of these high energy gamma-rays during the afterglow. Here, for the first time we demonstrate that, the photohadronic scenario which is successful in explaining the multi-TeV flaring in high energy blazars is also applicable for gamma-ray bursts. We show that the sub-TeV spectra of GRB 190114C and GRB 180720B are due to the interaction of high energy protons with the background photons in the synchrotron self-Compton region and synchrotron region respectively. The nature of the background photon distributions help us to constraint their bulk Lorentz factors.

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Sarira Sahu, Carlos E. Lopez Fortin. 2020-05-25. Origin of sub-TeV afterglow emission from gamma-ray bursts GRB 190114C and GRB 180720B. https://doi.org/10.3847/2041-8213%2Fab93da

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