Light curve obtain by integrating the total synchrotron flux emitted from a simulation box with a size of [R = 8,  Z = 200] R_jet. The computation of the light curve is realized for the hydrodynamic case (H) of jet. The flux is integrated from t = 0 the time of the injection of the ejecta, until respectively t ∼ (90,  13) R_jet/δ for δ(θ_obs = 15° ) ≃ 2.57 (top) and δ(θ_obs = 2° ) ≃ 18 (bottom) in the absolute frame and ν = 1 GHz. The gray dotted line represent the exit of ejecta from the simulation box.