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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(More)
We simulate the growth of galaxies and their central supermassive black holes by implementing a suite of semi-analytic models on the output of the Millennium Run, a very large simulation of the concordance ΛCDM cosmogony. Our procedures follow the detailed assembly history of each object and are able to track the evolution of all galaxies more massive than(More)
We present the results of a large library of cosmological N-body simulations, using power-law initial spectra. The nonlinear evolution of the matter power spectra is compared with the predictions of existing analytic scaling formulae based on the work of Hamilton et al. The scaling approach has assumed that highly nonlinear structures obey 'stable(More)
We present a comprehensive set of convergence tests which explore the role of various numerical parameters on the equilibrium structure of a simulated dark matter halo. We report results obtained with two independent, state-of-the-art, multi-stepping, parallel N–body codes: PKDGRAV and GADGET. We find that convergent mass profiles can be obtained for(More)
We use gigaparticle N-body simulations to study galaxy cluster populations in Hubble volumes of ÃCDM (m ¼ 0:3, Ã ¼ 0:7) and CDM (m ¼ 1) world models. Mapping past light cones of locations in the computational space, we create mock sky surveys of dark matter structure to z ' 1:4 over 10,000 deg 2 and to z ' 0:5 over two full spheres. Calibrating the Jenkins(More)
A., et al. (2005). Simulating the joint evolution of quasars, galaxies and their large-scale distribution. It is posted here with the permission of the publisher for your personal use. No further distribution is permitted. If your library has a subscription to this journal, you may also be able to access the published version via the library catalogue.