ICM cooling in the wake of the mushroom-head-shaped cavity of A496. Top: Chandra unsharp masked image of A496, as shown in Fig. 8. Black contours show the morphology and extent of the warm gas nebula. The position of the wake of entrained gas is highlighted by arrows. The blue lines represent the sector used to extract the radial profiles of cooling instabilities shown in the bottom panel, and the blue arc shows the maximum extent of Hα filaments. The dashed white region shows the mushroom-head-shaped cavity. Bottom: radial profiles of t_cool/t_ff (in green) and t_cool/t_eddy (in orange) across the blue sector shown in the top panel. The blue vertical line marks the maximum extent of the detected Hα filaments, while the gray-shaded area represents the radial extent of the outer X-ray cavity. We note that the profiles in the bottom panel are plotted further out than the extent of the blue sector in the top panel.