CosmicEmu: Cosmic Emulator for the Dark Matter Power Spectrum

Details CosmicEmu: Cosmic Emulator for the Dark Matter Power Spectrum CosmicEmu: Cosmic Emulator for the Dark Matter Power Spectrum

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ascl.soft10030l&link_type=abstract

Astrophysics Source Code Library, record ascl:1010.030

Astronomy and Astrophysics

Astrophysics

Scientific paper

Many of the most exciting questions in astrophysics and cosmology, including the majority of observational probes of dark energy, rely on an understanding of the nonlinear regime of structure formation. In order to fully exploit the information available from this regime and to extract cosmological constraints, accurate theoretical predictions are needed. Currently such predictions can only be obtained from costly, precision numerical simulations. The "Coyote Universe'' simulation suite comprises nearly 1,000 N-body simulations at different force and mass resolutions, spanning 38 wCDM cosmologies. This large simulation suite enabled construct of a prediction scheme, or emulator, for the nonlinear matter power spectrum accurate at the percent level out to k~1 h/Mpc. This is the first cosmic emulator for the dark matter power spectrum.

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