1999/03/13 by Hugo Martel, Richard A. Matzner, Martel, Hugo +2
Decision Sciences · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Simulation Techniques and Applications #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9903210
latex source file + 7 Figures in postscript format. Full version of paper submitted to The Astrophysical Journal, Feb. 1999, and available from the authors
arxiv created 1999/03/13 · openalex publication_date 1999/03/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have simulated the formation and evolution of large-scale structure in the universe, for 68 different COBE-normalized cosmological models. For each cosmological model, we have performed between 1 and 3 simulations, for a total of 160 simulations. This constitutes the largest database of cosmological simulations ever assembled, and the largest cosmological parameter space ever covered by such simulations. We are making this database available to the astronomical community. We provide instructions for accessing the database and for converting the data from computational units to physical units. The database includes Tilted Cold Dark Matter (TCDM) models, Tilted Open Cold Dark Matter (TOCDM) models, and Tilted Lambda Cold Dark Matter (TLCDM) models. (For several simulations, the primordial exponent n of the power spectrum is near unity, hence these simulations can be considered as "untilted.") The simulations cover a 4-dimensional cosmological parameter phase space, the parameters being the present density parameter Omega0, cosmological constant lambda0, and Hubble constant H0, and the rms density fluctuation sigma8 at scale 8/h Mpc. All simulations were performed using a P3M algorithm with 643 particles on a 1283 mesh, in a cubic volume of comoving size 128 Mpc. Each simulation starts at a redshift of 24, and is carried up to the present. More simulations will be added to the database in the future.