SEDs for different observing times. The dashed and dash-dotted lines represent the IC and synchrotron contribution, respectively, while the solid lines are the total emission. The emission increases with time until 4 × 10⁴ s, when it starts to decrease. The synchrotron emission dominates at energies < 10 GeV for early times, but IC dominates the whole SED above 0.1 GeV during the most luminous stages.