COBE- and Cluster-Normalized CDM Simulations

Abstract

We introduce a set of four new publicly available N-body simulations, the most recent additions to the Texas P^3M Database. Our models probe the less studied parameter space region of moderate volume (100/h Mpc box) combined with fine mass resolution (~10^12 M_Sol, roughly comparable to a L_* galaxy), making these simulations especially suitable for study of major large-scale structure features such as voids, and for comparison with the largest three-dimensional redshift surveys currently available. Our cosmological models (LCDM, TOCDM, OCDM, TCDM) are all COBE-normalized, and when possible (LCDM and TOCDM) also cluster-normalized, based on the X-ray cluster M--T relation. The COBE- and cluster-normalized LCDM model reiterates the attractiveness of this currently favored model which does not require the introduction of tilt in order to fit the constraints imposed by observations of other cosmological parameters.