Initial Conditions for Large Cosmological Simulations

Details Initial Conditions for Large Cosmological Simulations Initial Conditions for Large Cosmological Simulations

2008-04-22

arxiv.org/abs/0804.3536v1

Astronomy and Astrophysics

Astrophysics

12 pages, 11 figures, submitted to ApJS

Scientific paper

10.1086/590370

This technical paper describes a software package that was designed to produce initial conditions for large cosmological simulations in the context of the Horizon collaboration. These tools generalize E. Bertschinger's Grafic1 software to distributed parallel architectures and offer a flexible alternative to the Grafic2 software for ``zoom'' initial conditions, at the price of large cumulated cpu and memory usage. The codes have been validated up to resolutions of 4096^3 and were used to generate the initial conditions of large hydrodynamical and dark matter simulations. They also provide means to generate constrained realisations for the purpose of generating initial conditions compatible with, e.g. the local group, or the SDSS catalog.

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