Embedding Realistic Surveys in Simulations Through Volume Remapping

Carlson, Jordan; White, Martin

doi:10.1088/0067-0049/190/2/311

Cited by 34 publications

(37 citation statements)

References 9 publications

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“…The boxes are remapped to fit the volume of the full planned survey using the code MAKE SURVEY Carlson & White (2010); White et al (2014). The same 100 cubic boxes are used for the Northern and Southern Galactic caps.…”

Section: Qpm Mocksmentioning

confidence: 99%

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2

Ata

Baumgarten

Bautista

et al. 2017

Monthly Notices of the Royal Astronomical Society

410

314

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We present measurements of the Baryon Acoustic Oscillation (BAO) scale in redshift-space using the clustering of quasars. We consider a sample of 147,000 quasars from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) distributed over 2044 square degrees with redshifts 0.8 < z < 2.2 and measure their spherically-averaged clustering in both configuration and Fourier space. Our observational dataset and the 1400 simulated realizations of the dataset allow us to detect a preference for BAO that is greater than 2.8σ. We determine the spherically averaged BAO distance to z = 1.52 to 3.8 per cent precision: D V (z = 1.52) = 3843 ± 147 (r d /r d,fid ) Mpc. This is the first time the location of the BAO feature has been measured between redshifts 1 and 2. Our result is fully consistent with the prediction obtained by extrapolating the Planck flat ΛCDM best-fit cosmology. All of our results are consistent with basic large-scale structure (LSS) theory, confirming quasars to be a reliable tracer of LSS, and provide a starting point for numerous cosmological tests to be performed with eBOSS quasar samples. We combine our result with previous, independent, BAO distance measurements to construct an updated BAO distance-ladder. Using these BAO data alone and marginalizing over the length of the standard ruler, we find Ω Λ > 0 at 6.6σ significance when testing a ΛCDM model with free curvature.

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Section: Qpm Mocksmentioning

confidence: 99%

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2

Ata

Baumgarten

Bautista

et al. 2017

Monthly Notices of the Royal Astronomical Society

410

314

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“…In order to maximise the number of independent light-cone realisations, we remap the 2.5 3 (Gpc/h) 3 cubical volume of the simulation using BoxRemap 3 (Carlson & White 2010). BoxRemap takes advantage of the periodicity of the simulated box to break it into cells, which are then translated by integer offsets to form cuboids.…”

Section: Light-cone Geometrymentioning

confidence: 99%

MultiDarkLens Simulations: weak lensing light-cones and data base presentation

Giocoli

Jullo

Metcalf

et al. 2016

Mon. Not. R. Astron. Soc.

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In this paper we present a large database of weak lensing light cones constructed using different snapshots from the Big MultiDark simulation (BigMDPL). The raytracing through different multiple plane has been performed with the GLAMER code accounting both for single source redshifts and for sources distributed along the cosmic time. This first paper presents weak lensing forecasts and results according to the geometry of the VIPERS-W1 and VIPERS-W4 field of view. Additional fields will be available on our database and new ones can be run upon request. Our database also contains some tools for lensing analysis. In this paper we present results for convergence power spectra, one point and high order weak lensing statistics useful for forecasts and for cosmological studies. Covariance matrices have also been computed for the different realisations of the W1 and W4 fields. In addition we compute also galaxy-shear and projected density contrasts for different halo masses at two lens redshift according to the CFHTLS source redshift distribution both using stacking and cross-correlation techniques, finding very good agreement.

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“…The minimum reconstructed halo mass we consider for the purpose of creating VIPERS mocks is 10 10 h −1 M . We then apply to the complete halo catalogues the algorithm presented in Carlson & White (2010) to remap halo positions and velocities in the initial simulation cube onto a cuboid of the same volume but different geometry. This is done to accommodate a maximum number of disjoint VIPERS W1 and W4 fields within the 1 h −3 Gpc 3 volume of the simulation.…”

Section: Simulation Datamentioning

confidence: 99%

The VIMOS Public Extragalactic Redshift Survey (VIPERS)

Torre¹,

Guzzo²,

Peacock³

et al. 2013

A&A

288

117

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We present the general real-and redshift-space clustering properties of galaxies as measured in the first data release of the VIPERS survey. VIPERS is a large redshift survey designed to probe in detail the distant Universe and its large-scale structure at 0.5 < z < 1.2. We describe in this analysis the global properties of the sample and discuss the survey completeness and associated corrections. This sample allows us to measure the galaxy clustering with an unprecedented accuracy at these redshifts. From the redshift-space distortions observed in the galaxy clustering pattern we provide a first measurement of the growth rate of structure at z = 0.8: f σ 8 = 0.47 ± 0.08. This is completely consistent with the predictions of standard cosmological models based on Einstein gravity, although this measurement alone does not discriminate between different gravity models.

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Embedding Realistic Surveys in Simulations Through Volume Remapping

Cited by 34 publications

References 9 publications

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2

MultiDarkLens Simulations: weak lensing light-cones and data base presentation

The VIMOS Public Extragalactic Redshift Survey (VIPERS)

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