Ratio of the timescales predicted by Eq. (25) to the results obtained by the best fit of the radio-γ response applied to the numerical simulations. All the other parameters are the same as reported in Table 2. The blue lines correspond to the case of only adiabatic cooling, and the orange lines to the case of radiative plus adiabatic cooling. The green shaded areas represent the ±10% region with respect to the prediction from Eq. (25), and the dashed horizontal lines indicate unity. Top panel: radio-γ delay. Middle panel: decay time. Bottom panel: rise time.