|The Hubble Volume Project|
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Data Visualization (images & movies from Numerical Simulation projects)
Introduction: The Hubble
The Hubble Volume Project is a joint effort of the Virgo Consortium and collaborators in U.S., Canada, U.K., and Germany. To study the formation of clusters of galaxies, filaments and void-structures, a significant fraction of the entire observable universe is modelled and simulated by employing one billion(=1000000000) mass particles. This is the largest such computer simulation ever done. The 512-processor Garching T3E parallel computer was used for this simulation, which produced almost a Terabyte of output data in some 70 hours.
An important aspect associated with the Hubble Volume Simulations is that data are output along a light-cone so the clustering evolution is incorporated in output data (see the picture below).
A narrow wedge showing the evolution of the clustering:
Get this picture in various color combinations!
Credit to all the light-cone pictures: Gus Evrard and Andrzej Kudlicki , ref.1
Images of cluster populations along light-cone
You can download all pictures in original size in gzipped postscript format. (Watch out, they are huge.)
Pic.1A and B:This picture shows projected matter distribution in a slab of 2000 x 2000 x 20 (Mpc/h)3 taken from the snapshot (=particle positions are fixed at an instance) of tauCDM model.
Credit: Colberg and Yoshida, ref.2,3
Pic.2A and B: Here is another representation which gives a much better impression of the clustering. There are some huge voids and superclusters!
Credit: Couchman and Yoshida, ref.2,3
Pic.3A: A thin slice through the full volume. This picture is 12 billion lightyears on a side and is 120 million lightyears thick. It is available as gif files of various sizes:
Credit: Joerg Colberg, ref. 4-7
Pic. 3B: A blow-up of a subregion of the above picture. This is roughly 4 billion lightyears on a side and shows a supercluster complex and several large voids which are bigger than any currently known in the real Universe. This picture is available as gif files of various sizes:
Credit: Joerg Colberg, ref. 4-7
The following data except the cluster catalogues are very large in size and therefore it is practically impossible to download them via internet or ftp. By selecting data types and clicking "GO" you will get information on the data such as number of pieces, size, magnetic tape format and also a detailed description of the data will be shown. Please read the description carefully and send the request as instructed.
Cluster catalogues (downloadable)
Snapshot : By FOF algorithm with linking parameter b=0.2 for tCDM and 0.164 for LCDM, ref 2.
Here is an example of proper credit for these Hubble data:
The simulations in this paper were carried out by the Virgo Supercomputing
Consortium using computer s based at the Computing Centre of the Max-Planck
Society in Garching and at the Edinburgh parallel Computing Centre. The
data are publicly available at
Comments to: Virgo Administrator firstname.lastname@example.org