Speaker
Prof.
Dafne Guetta
(Physics Department, Ariel University,)
Description
The recently discovered TeV emission from Gamma-Ray Bursts (GRBs) hints towards a possible hadronic origin of this radiation component. To investigate such scenario, we developed a tailored Monte Carlo (MC) simulation that reproduces the kinematics of photo-hadronic interactions occurring at internal shocks, including the electromagnetic cascade process that the resulting secondary gamma rays undergo inside the GRB jet. As a result, we find that sub-TeV observations of GRB190114C can be reproduced by a baryonic energy content comparable to that in sub-GeV photons and a bulk Lorentz factor Gamma ~100. Neutrino flux predictions are found to be consistent with experimental upper limits set by ANTARES and IceCube.
