Comparison of galaxy density and X-ray emission. Left: cut and reprojected 2MASS map from Jarrett et al. (2000) and Reiprich et al. (2003) smoothed with a Gaussian kernel with a radius of 3 pixels and with green contours (contour levels are 0.18, 0.73, 1.27, 1.82, 2.36, 2.91, 3.45 and 4.00). The brighter regions can be interpreted as regions with a galaxy overdensity compared to the darker regions. Right: data-reduced waveletfiltered X-ray image overlaid with the contours from the left image. The brighter regions are regions with enhanced cluster emission compared to the darker regions.