Galaxy isodensity map (blue contours), with overlaid the X-ray Chandra contours (green, same as in Fig. 4). The radio image (same as in Fig. 2, left) is shown in greyscale (with the lowest level corresponding to 3σ_{323 MHz} = 0.82 mJy/b). Only galaxies in the magnitude range R = (17.8–21) and in the colour range 3.4 μm – R = (3.5–4.5) have been used, and their spatial distribution is shown by red circles.