CLUES – Constrained Local UniversE Simulations

The objective of the CLUES collaboration is to reconstruct the present structure and the past evolution of the local Universe - the best observed region of our Universe. In this unique environment we study structure formation on scales ranging from very low mass dwarf galaxies around the Local Group and in nearby voids, individual galaxies (like the Milky Way and M31), nearby clusters (Virgo, Coma and Norma to name a few) and superclusters of galaxies up to the entire cosmic web out to z~0.1. The CLUES’ main tool are cosmological simulation constrained by the largest available surveys of galaxy peculiar velocities, namely simulations designed to recover our local neighborhood by construction. The CLUES constitutes a numerical laboratory for testing the standard model of cosmology. Its simulations are used for an unprecedented analysis of the complex dark matter and gasdynamical processes which govern the formation of structures. The predictions of these numerical experiments are directly compared with the detailed observations of the observed structures around us.

Executive Board of the Collaboration:

This plot of 2008 shows the dark matter distribution in the first CLUES boxes with 160 Mpc/h side length (big picture) and with 64 Mpc/h side length (inset panel). Even though the two simulations use completely different random phases for the initial perturbations the observational constraints reproduced in both simulations well the Local Supercluster.