Fast and accurate mock catalogue generation for low-mass galaxies

Abstract

We present an accurate and fast framework for generating mock catalogues including low-mass halos, based on an implementation of the COmoving Lagrangian Acceleration (COLA) technique. Multiple realisations of mock catalogues are crucial for analyses of large-scale structure, but conventional N-body simulations are too computationally expensive for the production of thousands of realisations. We show that COLA simulations can produce accurate mock catalogues with a moderate computation resource for low- to intermediate- mass galaxies in $10^{12}{M}_{\odot }$ haloes, both in real and redshift space. COLA simulations have accurate peculiar velocities, without systematic errors in the velocity power spectra for k < 0.15 h/Mpc, and with only 3-per-cent error for k < 0.2 h/Mpc. We use COLA with 10 time steps and a Halo Occupation Distribution to produce 600 mock galaxy catalogues of the WiggleZ Dark Energy Survey. Our parallelized code for efficient generation of accurate halo catalogues is publicly available at github.com/junkoda/cola_halo.

References in corpus (10)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• The Clustering of the SDSS Main Galaxy Sample II: Mock galaxy catalogues and a measurement of the growth of structure from Redshift Space Distortions at $z=0.15$
• The Structure of Halos: Implications for Group and Cluster Cosmology
• nIFTy Cosmology: Galaxy/halo mock catalogue comparison project on clustering statistics
• The BOSS-WiggleZ overlap region I: Baryon Acoustic Oscillations
• The BOSS-WiggleZ overlap region II: dependence of cosmic growth on galaxy type
• The Subaru FMOS Galaxy Redshift Survey (FastSound). I. Overview of the Survey Targeting on H$\alpha$ Emitters at $z\sim 1.4$
• Cosmic web-type classification using decision theory

Cited by in corpus (65)

• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the BOSS Final Data Release
• The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at $z\sim 1.4$
• FastPM: a new scheme for fast simulations of dark matter and halos
• Cosmological $N$-body simulations with suppressed variance
• Large-scale dark matter simulations
• The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: 1000 multi-tracer mock catalogues with redshift evolution and systematics for galaxies and quasars of the final data release
• Dark Energy Survey Year 3 Results: A 2.7% measurement of Baryon Acoustic Oscillation distance scale at redshift 0.835
• Low Redshift Baryon Acoustic Oscillation Measurement from the Reconstructed 6-degree Field Galaxy Survey
• ICE-COLA: Towards fast and accurate synthetic galaxy catalogues optimizing a quasi $N$-body method
• COLA with scale-dependent growth: applications to screened modified gravity models
• Unified galaxy power spectrum measurements from 6dFGS, BOSS, and eBOSS
• Comparing approximate methods for mock catalogues and covariance matrices II: Power spectrum multipoles
• Comparing approximate methods for mock catalogues and covariance matrices I: correlation function
• Comparing approximate methods for mock catalogues and covariance matrices III: Bispectrum
• Dark matter statistics for large galaxy catalogs: power spectra and covariance matrices
• The BOSS-WiggleZ overlap region I: Baryon Acoustic Oscillations
• Improving fast generation of halo catalogs with higher-order Lagrangian perturbation theory
• Consistency of the growth rate in different environments with the 6dF Galaxy Survey: measurement of the void-galaxy and galaxy-galaxy correlation functions
• Generating Log-normal Mock Catalog of Galaxies in Redshift Space
• Dark Energy Survey: A 2.1% measurement of the angular Baryonic Acoustic Oscillation scale at redshift $z_{\mathrm{eff}}$=0.85 from the final dataset
• Measuring the 2D Baryon Acoustic Oscillation signal of galaxies in WiggleZ: Cosmological constraints
• BAM: Bias Assignment Method to generate mock catalogs
• Fast full N-body simulations of generic modified gravity: conformal coupling models
• The effect of photometric redshift uncertainties on galaxy clustering and baryonic acoustic oscillations
• ICE-COLA: fast simulations for weak lensing observables
• Fast full $N$-body simulations of generic modified gravity: derivative coupling models
• Fast Generation of Covariance Matrices for Weak Lensing
• Measuring the evolution of intergalactic gas from z=0 to 5 using the kinematic Sunyaev-Zel'dovich effect
• Analysis of Unified Galaxy Power Spectrum Multipole Measurements
• The Subaru FMOS galaxy redshift survey (FastSound). V. Intrinsic alignments of emission line galaxies at $z\sim 1.4$
• Suppressing cosmic variance with paired-and-fixed cosmological simulations: average properties and covariances of dark matter clustering statistics
• The BINGO Project VI: HI Halo Occupation Distribution and Mock Building
• The bias of dark matter tracers: assessing the accuracy of mapping techniques
• Impact of bias and redshift-space modelling for the halo power spectrum: Testing the effective field theory of large-scale structure
• (DarkAI) Mapping the large-scale density field of dark matter using artificial intelligence
• Testing approximate predictions of displacements of cosmological dark matter halos
• Fast generation of mock galaxy catalogues in modified gravity models with COLA
• Does jackknife scale really matter for accurate large-scale structure covariances?
• The cosmic web connection to the dark matter halo distribution through gravity
• Estimating Cosmological Parameters from the Dark Matter Distribution
• Accurate halo-galaxy mocks from automatic bias estimation and particle mesh gravity solvers
• Beyond the growth rate of cosmic structure: Testing modified gravity models with an extra degree of freedom
• Angular clustering and host halo properties of [OII] emitters at $z>1$ in the Subaru HSC survey
• Improving estimates of the growth rate using galaxy-velocity correlations: a simulation study
• Sesame: A power spectrum emulator pipeline for beyond-$\Lambda$CDM models
• Perfectly parallel cosmological simulations using spatial comoving Lagrangian acceleration
• How accurately can we measure the baryon acoustic oscillation feature?
• $\text{PineTree}$: A generative, fast, and differentiable halo model for wide-field galaxy surveys
• Fast numerical method to generate halo catalogs in modified gravity (part I): second-order Lagrangian Perturbation Theory
• Fast generation of mock galaxy catalogues with COLA
• BullFrog: Multi-step perturbation theory as a time integrator for cosmological simulations
• Tree-less 3d Friends-of-Friends using Spatial Hashing
• Bayesian deep learning for cosmic volumes with modified gravity
• Constraining modified gravity scenarios with the 6dFGS and SDSS galaxy peculiar velocity datasets
• HI HOD -- I. The Halo Occupation Distribution of HI Galaxies
• Secondary halo bias through cosmic time II: Reconstructing halo properties using clustering information
• COmoving Computer Acceleration (COCA): $N$-body simulations in an emulated frame of reference
• Perturbation-theory informed integrators for cosmological simulations
• Fast simulation mapping: from standard to modified gravity cosmologies using the bias assignment method
• A Galaxy-Halo Model for Multiple Cosmological Tracers
• Approximate methods for the generation of dark matter halo catalogs in the age of precision cosmology
• Dark Energy Survey Year 3 Results: Galaxy mock catalogs for BAO analysis
• Dark Energy Survey: DESI-Independent Angular BAO Measurement
• A fast algorithm for identifying Friends-of-Friends halos
• Seeing Wiggles without Seeing Wiggles: BAO Recovery in 21 cm Intensity Mapping with Deep Learning