Spatial distribution of red galaxies of the third nearest (left-hand panel) and third most distant (right-hand panel) clusters. The inner (green) circle marks the derived r200 radius, the outer (red) circle indicates 3 Mpc at the cluster redshift. The cross indicates the cluster center as given in the literature. In the right panel there is another obvious galaxy overdensity, at (α,δ) ≈ (218.4,29.45).
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