Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-02-10
Astronomy and Astrophysics
Astrophysics
6 pages (incl. one figure), LATEX (crckapb.sty), To appear in the Proceedings of the Ringberg Workshop on 'Large Scale Structu
Scientific paper
We report on work done by the Virgo consortium, an international collaboration set up in order to study the formation and evolution of Large Scale Structure using N-body simulations on the latest generation of parallel supercomputers. We show results of 256^3 particle simulations of the formation of clusters in four Dark Matter models with different cosmological parameters. Normalizing the models such that one obtains the correct abundance of rich clusters yields an interesting result: The peculiar velocities of the clusters are almost independent of \Omega, and depend only weakly on \Gamma, the shape parameter of the power spectrum. Thus, it is nearly impossible to distinguish between high and low \Omega models on the basis of the peculiar velocities.
Colberg Joerg M.
Couchman H. M. P.
Efstathiou George P.
Frenk Carlos S.
Hutchings R.
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