|Intermediate Scale Simulations|
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Data Visualization (images & movies from Numerical Simulation projects)
Introduction: Cosmological N-Body Simulations
Four different cosmological models were simulated in large boxes. The simulations contain 2563 particles each and represent different cosmological models. The calculations were done by the parallel version of the AP3M N-body code on two large Cray T3D parallel supercomputers at the Edinburgh Parallel Computing Center and at the Computing Centre of the Max Planck Society in Garching
Shown in the left panels are projected mass distibutions in a sliced region in the simulation box. Low-density regions which look like "voids" are dark, while red (and yellow) parts are high-density regions. The pictures were created using an adaptive smoothing scheme which assigns to each particle an individual smoothing length. Thus, high density regions are not smoothed at all whereas low density regions are smoothed.
Pictures credit: Joerg Colberg
Boxsize 239.5 Mpc/h
density plot at z=0. The brightness of the colours is proportional
to the log of the density of the particles. Note:
This GIF picture has a size of 3.4MB!
The pictures below show projected mass distributions in slices of the
Virgo simulation boxes. The first one has 12 panels, 3 different redshifts
in a row for each model. Thus in this picture we see the time evolution
of structures along the horizontal sequence in each model as well as the
model difference at the same epoch along the vertical sequence.
Pictures are downloadable in the original sizes in various format. If
you would like to download these pictures,
The structure of galaxy clusters in various cosmologies, P.A. Thomas, J.M. Colberg, H.M.P Couchman, G. Efstathiou, C.S. Frenk, A. Jenkins, A.H. Nelson, R.M. Hutchinhgs, J.A. Peacock, F.R. Pearce, S.D.M.
Here is an example of proper credit for these Virgo data.
Comments to: Virgo Administrator firstname.lastname@example.org