CosmicEmu: Cosmic Emulator for Dark Matter Power Spectrum

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CosmicEmu: Cosmic Emulator for the Dark Matter Power Spectrum

Post by owlice » Sat Oct 16, 2010 2:29 pm

CosmicEmu: Cosmic Emulator for the Dark Matter Power Spectrum

Abstract: 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.

Credit: Lawrence, Earl; Heitmann, Katrin; White, Martin; Higdon, David; Wagner, Christian; Habib, Salman; Williams, Brian


Bibcode: 2010ascl.soft10030L

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ID: ascl:1010.030
Last edited by Ada Coda on Sun Oct 04, 2020 5:08 pm, edited 1 time in total.
Reason: Updated code entry.
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