The coyote universe III: simulation suite and precision emulator for the nonlinear matter power spectrum

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

doi:10.1088/0004-637X/705/1/156

Title: The coyote universe III: simulation suite and precision emulator for the nonlinear matter power spectrum

Journal Article · Thu Jan 01 00:00:00 EST 2009 · The Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/705/1/156· OSTI ID:971293

Heitmann, Katrin ^[1]; White, Martin ^[1]; Higdon, David ^[1]; Wagner, Christian ^[1]; Lawrence, Earl ^[1]; Habib, Salman ^[1]; Williams, Brian ^[1]

Los Alamos National Laboratory

Ongoing and future large scale structure surveys targeted at the investigation of dark energy will enter the nonlinear regime of structure formation. In order to fully exploit the newly available information from this regime and to extract cosmological constraints. very accurate theoretical predictions are needed. Such predictions can currently only be obtained from costly precision N-body simulations. We have recently shown that it is possible to obtain predictions for the nonlinear matter power spectrum at the level of one-percent accuracy and that we can build a precise prediction scheme for the nonlinear power spectrum from a small set of cosmological models. In this paper we introduce the 'Coyote Universe' simulation suite which comprises more than 800 N-body simulations at different force and mass resolutions, spanning 38 wCDM cosmologies. This large simulation suite enables us to construct a prediction scheme for the nonlinear matter power spectrum accurate at the 1% level out to k {approx_equal} 1 hMpc{sup -1}.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-06NA25396

OSTI ID:: 971293

Report Number(s):: LA-UR-09-06131; LA-UR-09-6131; ASJOAB; TRN: US201004%%55

Journal Information:: The Astrophysical Journal, Journal Name: The Astrophysical Journal; ISSN 0004-637X

Country of Publication:: United States

Language:: English

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Title: The coyote universe III: simulation suite and precision emulator for the nonlinear matter power spectrum

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