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Simulating the joint evolution of quasars, galaxies and their large-scale distribution

By Volker Springel, Simon D M White, Adrian Jenkins, Carlos S Frenk, Naoki Yoshida, Liang Gao, Julio Navarro, Robert Thacker, Darren Croton, John Helly, John A Peacock, Shaun Cole, Peter Thomas, Hugh Couchman, August Evrard, Jörg Colberg and Frazer Pearce

Abstract

The cold dark matter model has become the leading theoretical paradigm for the formation of structure in the Universe. Together with the theory of cosmic inflation, this model makes a clear prediction for the initial conditions for structure formation and predicts that structures grow hierarchically through gravitational instability. Testing this model requires that the precise measurements delivered by galaxy surveys can be compared to robust and equally precise theoretical calculations. Here we present a novel framework for the quantitative physical interpretation of such surveys. This combines the largest simulation of the growth of dark matter structure ever carried out with new techniques for following the formation and evolution of the visible components. We show that baryon-induced features in the initial conditions of the Universe are reflected in distortions in the low-redshift galaxy distribution, an effect that can be used to constrain the nature of dark energy with next generations of surveys

Year: 2005
OAI identifier: oai:sro.sussex.ac.uk:15921
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