Energy centered lightcurves for photon energies x₁ = 10^-3.85 (dashed line), x₂ = 10^-1.25 (dot-dashed line), and x₃ = 10^3.15 (short dashed line) resulting from a Lorentzian variation of the proton injection parameter  with n = 3.2 and w = 10t_cr, depicted here with full line. This variation was introduced on a pre-existing steady-state obtained with the parameters of Fig. 4 (or, equivalently, Fig. 7, bottom curve.) For this example lines x₂ and x₃ practically coincide.