Three-dimensional figures of heating front propagation (lower panels) and corresponding light curves (upper panels) of the simulation displayed in figure 10. (Left) Time evolution of the disk temperature from 290.9 to 293.5 >d per 0.1 d. The corresponding time period in the lower panel is represented by the red line in the upper light curve. (Right) Detailed version of a part of heating front propagation. The time evolution of the disk temperature from 290.7 to 292.2 d per 0.025 d and the corresponding light curve.