2006/01/01 by S. Gottloeber, S. Gottlöber, G. Yepes +3 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Baryon #Cold dark matter #Cosmology #Cosmology and Gravitation Theories #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy groups and clusters #Halo #Milky Way #Universe #astro-ph
paper · pdf · doi:10.1063/1.2409061
published as AIPConf.Proc.878:3-9,2006 · 7 pages, 5 figures. Contribution to the proceedings of the conference "The Dark Side of the Universe 2006", Madrid. To be published by American Institue of Physics, Eds C. Munoz and G. Yepes. See also the the web page of the Marenostrum Numerical Cosmology Project at http://astro.ft.uam.es/marenostrum/
openalex publication_date 2006/01/01 · arxiv created 2006/10/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report some results from one of the largest hydrodynamical cosmological simulations of large scale structures that has been done up to date. The MareNostrum Universe SPH simulation consists of 2 billion particles (2 × 10243) in a cubic box of 500 h−1 Mpc on a side. This simulation has been done in the MareNostrum parallel supercomputer at the Barcelona SuperComputer Center. Due to the large simulated volume and good mass resolution, our simulated catalog of dark matter halos comprises more than half a million objects with masses larger than a typical Milky Way galaxy halo. From this dataset we have studied several statistical properties such as the halo mass function, the distribution of shapes of dark and gas components within halos, the baryon fraction, cumulative void volume etc. This simulation is particularly useful to study the large scale distribution of baryons in the universe as a function of temperature and density. In this paper we also show the time evolution of the gas fractions at large scales.