Left panel: same as Fig. 1, showing extraction regions for the “relaxed” direction of the cluster (orthogonal to the merging axis) in red. The black dashed circle represents r₅₀₀. The center of A3365_1a and A3365_1b are marked with black and blue crosses. Right panel: temperature distribution of the red sectors compared with the Burns et al. (2010) “universal” profile for relaxed clusters. The gray shaded area shows the 1σ scatter.