PoS - Proceedings of Science
Volume 312 - 7th International Fermi Symposium (IFS2017) - Session Gamma-Ray Bursts
Constraints on microphysical parameters of GRBs using HAWC
S. Dichiara*, M.M. Gonzalez, N. Fraija  on behalf of the HAWC Collaboration
Full text: pdf
Pre-published on: December 12, 2017
Published on: November 11, 2020
Abstract
The physical mechanism at the origin of gamma-ray bursts (GRBs) is far from being completely
understood. Describing their emission up to very high energies (GeV-TeV) is one of the most
challenging and important tasks needed to unveil the physics of these peculiar events. Using
data collected by the HAWC gamma-ray observatory, we search for TeV emission coming from
a sample of GRBs detected by Fermi and Swift between December 2014 and May 2017. We
derive upper limit over different time intervals and use them to constrain the micro-physical pa-
rameters and the bulk Lorentz factor under the assumption of Self-Synchrotron Compton within
the external shock model scenario. We present the results of this analysis discussing possible
interpretations.
DOI: https://doi.org/10.22323/1.312.0068
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