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These grew into larger and larger clumps through the hierarchical merging of smaller progenitors.
Although the nature of dark matter remains a mystery, it accounts for about 82 percent of the matter in the universe.
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The Bolshoi simulation is based on the latest cosmic microwave background (WMAP5) parameters, which are consistent with the later WMAP7 results.
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.
The Bolshoi simulation and its two variants will be made publicly available to astrophysical researchers worldwide in phases via the Multi Dark Database, hosted by the Potsdam Astrophysics Institute in Germany and supported by grants from Spain and Germany.
Primack, Klypin, and their collaborators are continuing to analyze the results of the Bolshoi simulation and submit papers for publication.
“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.