Diverse Features of the Multiwavelength Afterglows of Gamma-Ray Bursts: Natural or Special?

Figure 2

Corresponding afterglow lightcurves for the two cases in Figure 1. The red, blue lines are lightcurves in the optical band ( Hz) and the X-ray band (0.3 keV), respectively. The dotted lines (Opt-4 or X-ray-4) represent the flux density of Region 2 before the density jump and the flux density of Region 4 after the jump. The dashed lines (Opt-3 or X-ray-3) are the contribution from Region 3 after the density jump. The dash-dotted lines (Opt-2 or X-ray-2) mark the flux density of Region 2 after the jump. Total flux densities of all the components are presented by the solid lines (Opt-tot or X-ray-tot). For a similar plot, see [47].

(a)

(b)