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Fig. 1


Left and middle panels: histograms of the luminosity concentration (left) and the offset between the BCG and X-ray flux-weighted centroid (middle) of all 64 HIFLUGCS clusters with their Gaussian fits shown as solid curves. The mean of the Gaussian fits and their 1σ clipping are shown as dashed and solid vertical lines, respectively. Right panel: cL versus ΔR/r500 with its best fit, log 10cL = (0.593 ± 0.053) + (0.125 ± 0.028)log 10R/r500), as dash-dotted line. The vertical and horizontal solid lines denote the 1σ clipping below which the clusters are considered as undisturbed ones (open squares). The disturbed clusters are shown as open triangles.

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