Time evolution of the SED when all the physical processes are taken into account. The parameters have the values: cm, B₀ = 3.16 G, erg s⁻¹, , u_exp = 0.1 c, γ_min = 1, γ_max = 10^4.5, p = 2, and δ = 10. The magnetic field and electron luminosity profiles are ∝R^{′ − 1}. The colorbar refers to time, the time unit is given in days in the co-moving frame and it is on a logarithmic scale.