Evolution of the disk thermal structure during the outburst for the passive outer disk model (Model P; upper set of panels) and the fully active disk model (Model A; lower set of panels). Each panel set shows a selection of time moments; the total outburst energetics are shown in the legend of each panel. The lower right panel in each set presents the midplane temperature radial profile for the same time moments. The chosen coordinates for the heatmaps lg(R/au)sinθ − lg(R/au)cosθ allow us to highlight the inner and midplane regions and are convenient for representing data obtained on the polar (R, θ) grid.