Radio light curves as a function of time as measured in the observer’s frame for various initial values in log (erg/sec) of the injected electron luminosity – the injection is assumed to start at t = 0. The other parameters have the values: cm, u_exp = 0.05 c, G, , γ_min = 1, γ_max = 10⁶, p = 2, and δ = 10. For the magnetic field profile, we have B′∝R^{′ − 1} and for the electron luminosity, . The source is assumed to be at a distance of 130 Mpc.