On the hadronic origin of the TeV radiation from GRB 190114C

2022/09/05 by S. Gagliardini, Gagliardini, S., S. Celli +9
Physics and Astronomy · #Gamma-ray bursts and supernovae #Astrophysics and Cosmic Phenomena #Particle Detector Development and Performance

paper · pdf · doi:10.48550/arxiv.2209.01940

Abstract

The recently discovered TeV emission from Gamma-Ray Bursts (GRBs) hints towards a possible hadronic origin of this radiation component. We developed a Monte Carlo (MC) simulation reproducing the kinematics of photo-hadronic interactions at internal shocks, including the pair production process that the secondary gamma rays undergo in the GRB jet. We find that sub-TeV observations of GRB 190114C can be reproduced by a baryonic energy content comparable to that in sub-GeV photons and a bulk Lorentz factor Γ=100, with a ms variability timescale. Neutrino flux predictions by the model are found to be consistent with experimental upper limits set by ANTARES and IceCube.

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