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Scientists release most accurate simulation of the universe to date

Scientists release most accurate simulation of the universe to date

The Bolshoi supercomputer simulation, is the most accurate and detailed large cosmological simulation run to date (“bolshoi” is the Russian word for “great” or “grand”), giving physicists and astronomers a powerful new tool for understanding such cosmic mysteries as galaxy formation, dark matter, and dark energy.

The simulation traces the evolution of the large-scale structure of the universe, including the evolution and distribution of the dark matter halos, in which galaxies coalesced and grew. Initial studies show good agreement between the simulation’s predictions and astronomers’ observations.

“What’s exciting is that we now have this highly accurate simulation that will provide the basis for lots of important new studies in the months and years to come,” said Joel Primack, distinguished professor of physics at the University of California, Santa Cruz.

Primack and Anatoly Klypin, professor of astronomy at New Mexico State University, lead the team that produced the Bolshoi simulation. Klypin wrote the computer code for the simulation, which was run on the Pleiades supercomputer at NASA Ames Research Center.

Primack, who directs the University of California High-Performance Astrocomputing Center (UC-HIPACC), said the initial release of data from the Bolshoi simulation began in early September. “We’ve released a lot of the data so that other astrophysicists can start to use it,” he said. “So far it’s less than one percent of the actual output, because the total output is so huge, but there will be additional releases in the future.”

See photos of the Russian space program throughout the years on our Facebook
More simulation movies here
Via: University of California High-Performance Astrocomputing Center

A. Klypin, S. Trujillo-Gomez, & J. Primack (2010). Halos and galaxies in the standard cosmological model: results from the
Bolshoi simulation Xavi.org arXiv: 1002.3660v4

Sebastian Trujillo-Gomez, Anatoly Klypin, Joel Primack, & Aaron J. Romanowsky (2010). Galaxies in LCDM with Halo Abundance Matching: luminosity-velocity
relation, baryonic mass-velocity relation, velocity function and clustering Arxiv.org arXiv: 1005.1289v3

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