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Simulations of the formation, evolution and clustering of galaxies and quasars

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posted on 2024-08-06, 12:08 authored by Volker Springel, Simon D.M. White, Adrian Jenkins, Carlos S. Frenk, Naoki Yoshida, Liang Gao, Julio Navarro, Robert Thacker, Darren CrotonDarren Croton, John Helly, John A. Peacock, Shaun Cole, Peter Thomas, Hugh Couchman, August Evrard, Jörg Colberg, Frazer Pearce
The cold dark matter model has become the leading theoretical picture for the formation of structure in the Universe. This model, together with the theory of cosmic inflation, 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 simulation of the growth of dark matter structure using 2,1603 particles, following them from redshift z = 127 to the present in a cube-shaped region 2.230 billion lightyears on a side. In postprocessing, we also follow the formation and evolution of the galaxies and quasars. We show that baryon-induced features in the initial conditions of the Universe are reflected in distorted form in the low-redshift galaxy distribution, an effect that can be used to constrain the nature of dark energy with future generations of observational surveys of galaxies.

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ISSN

0028-0836

Journal title

Nature

Volume

435

Issue

7042

Pagination

7 pp

Publisher

Nature Publishing Group

Copyright statement

Copyright © 2005 Nature Publishing Group. The accepted manuscript is reproduced in accordance with the copyright policy of the publisher.

Language

eng

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