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(Created page with "This timelapse was shows the distribution of matter in a simulated universe on l arge scales. The computer simulation (name: BHCosmo) was carried out on the Cray XT3 at the P itt...")
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'''Direct cosmological simulation of the formation of black holes and galaxies'''
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This timelapse was shows the distribution of matter in a simulated universe on l
This timelapse was shows the distribution of matter in a simulated universe on l
arge scales.
arge scales.
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The computer simulation (name: BHCosmo) was carried out on the Cray XT3 at the P
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The computer simulation (name: BHCosmo) was carried out on the Cray XT3 at the Pittsburgh Supercomputer Center
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ittsburgh Supercomputer Center
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by Tiziana Di Matteo (CMU) and the visualization by Yu Feng and Rupert Croft on  
by Tiziana Di Matteo (CMU) and the visualization by Yu Feng and Rupert Croft on  
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facilities provided  
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facilities provided by the Moore foundation in the McWilliams Center for Cosmology at CMU.
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The full
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The full
image is 600 million light years in width and the density of matter is being  
image is 600 million light years in width and the density of matter is being  
shown on a false color scale, with the densest regions in yellow
shown on a false color scale, with the densest regions in yellow
and the least dense in red and black.
and the least dense in red and black.
The very densest regions have formed stars, which are shown as white points.  
The very densest regions have formed stars, which are shown as white points.  
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Unlike images of the real Universe seen
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Unlike images of the real Universe seen
through optical telecopes, in the simulated image it is possible to see the film
through optical telecopes, in the simulated image it is possible to see the film
entary structures that  
entary structures that  
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stretch through the space between galaxies. These structures contain mostly hydr
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stretch through the space between galaxies. These structures contain mostly hydrogen
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ogen
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and helium gas. The only luminous matter is in galaxies, which are much sparser.
and helium gas. The only luminous matter is in galaxies, which are much sparser.
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To see these, we
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To see these, we
zoom in, where small blobs of gas (in dark blue) and stars (in white) become apparent: t
zoom in, where small blobs of gas (in dark blue) and stars (in white) become apparent: t
hese are whole galaxies.
hese are whole galaxies.
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lion years after the Big Bang)
lion years after the Big Bang)
the initially small fluctuations grow through the action of gravity until in the
the initially small fluctuations grow through the action of gravity until in the
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last frame (which  
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last frame (which  
represents the universe 7 billion years later, at redshift z=1) there are large  
represents the universe 7 billion years later, at redshift z=1) there are large  
clusters of galaxies. If you zoom in and scroll around you will see that clusters contain
clusters of galaxies. If you zoom in and scroll around you will see that clusters contain

Revision as of 20:37, 12 April 2011

Direct cosmological simulation of the formation of black holes and galaxies

This timelapse was shows the distribution of matter in a simulated universe on l arge scales. The computer simulation (name: BHCosmo) was carried out on the Cray XT3 at the Pittsburgh Supercomputer Center by Tiziana Di Matteo (CMU) and the visualization by Yu Feng and Rupert Croft on facilities provided by the Moore foundation in the McWilliams Center for Cosmology at CMU. The full image is 600 million light years in width and the density of matter is being shown on a false color scale, with the densest regions in yellow and the least dense in red and black. The very densest regions have formed stars, which are shown as white points. Unlike images of the real Universe seen through optical telecopes, in the simulated image it is possible to see the film entary structures that stretch through the space between galaxies. These structures contain mostly hydrogen and helium gas. The only luminous matter is in galaxies, which are much sparser. To see these, we zoom in, where small blobs of gas (in dark blue) and stars (in white) become apparent: t hese are whole galaxies. As the universe evolves from early times (it starts at an age of two hundred mil lion years after the Big Bang) the initially small fluctuations grow through the action of gravity until in the last frame (which represents the universe 7 billion years later, at redshift z=1) there are large clusters of galaxies. If you zoom in and scroll around you will see that clusters contain many small galaxies as well as large ones.

More details in: Di Matteo et al., http://arxiv.org/abs/0705.2269