Cosmography of the local Universe based in X-ray Galaxy Clusters
Hans Böhringer (Max Planck Institute for Extraterrestrial Physics)
25 October
We use our statistically complete and well defined CLASSIX Cluster Survey based on the ROSAT X-ray sky to map the density distribution in the local Universe. We find that our immediate neighbourhood out to about 85-170 Mpc is less dense than the mean density on large scales and that the structures in this region are mostly concentrated around the Supergalactic plane. We identify the largest superclusters, most of which are well known, and characterise them with our new statistical approach. The largest structure found out to a redshift of z = 0.03 is the Perseus-Pisces supercluster.