Full forward model of galaxy clustering statistics with AbacusSummit lightcones

Abstract

Novel summary statistics beyond the standard 2-point correlation function (2PCF) are necessary to capture the full astrophysical and cosmological information from the small-scale (r < 30Mpc/h) galaxy clustering. However, the analysis of beyond-2PCF statistics on small scales is challenging because we lack the appropriate treatment of observational systematics for arbitrary summary statistics of the galaxy field. In this paper, we develop a full forward modeling pipeline for a wide range of summary statistics using the large high-fidelity AbacusSummit lightcones that accounts for many systematic effects but also remains flexible and computationally efficient to enable posterior sampling. We apply our forward model approach to a fully realistic mock galaxy catalog and demonstrate that we can recover unbiased constraints on the underlying galaxy-halo connection model using two separate summary statistics: the standard 2PCF and the novel k-th nearest neighbor (kNN) statistics, which are sensitive to correlation functions of all orders. We will extend this method to a full cosmology emulator in a follow up paper. We expect this to become a powerful approach when applying to upcoming surveys such as DESI where we can leverage a multitude of summary statistics across a wide redshift range to maximally extract information from the non-linear scales.

arXiv commentcomments welcome, submitted to MNRAS

References in corpus (63)

• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• dynesty: A Dynamic Nested Sampling Package for Estimating Bayesian Posteriors and Evidences
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 9 Spectroscopic Galaxy Sample
• The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
• Extragalactic Science, Cosmology and Galactic Archaeology with the Subaru Prime Focus Spectrograph (PFS)
• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
• An Efficient Algorithm for Positioning Tiles in the Sloan Digital Sky Survey
• A hierarchy of voids: Much ado about nothing
• Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
• The DESI Experiment, a whitepaper for Snowmass 2013
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: RSD measurement from the power spectrum and bispectrum of the DR12 BOSS galaxies
• The Quijote simulations
• The dependence of clustering on galaxy properties
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Analysis of potential systematics
• The Coyote Universe II: Cosmological Models and Precision Emulation of the Nonlinear Matter Power Spectrum
• The Coyote Universe Extended: Precision Emulation of the Matter Power Spectrum
• Convolution Lagrangian perturbation theory for biased tracers
• AbacusSummit: A Massive Set of High-Accuracy, High-Resolution $N$-Body Simulations
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Modeling the clustering and halo occupation distribution of BOSS-CMASS galaxies in the Final Data Release
• Corrfunc --- A Suite of Blazing Fast Correlation Functions on the CPU
• The Coyote Universe III: Simulation Suite and Precision Emulator for the Nonlinear Matter Power Spectrum
• Methods for Rapidly Processing Angular Masks of Next-Generation Galaxy Surveys
• Detection of Baryon Acoustic Oscillation Features in the Large-Scale 3-Point Correlation Function of SDSS BOSS DR12 CMASS Galaxies
• The Aemulus Project III: Emulation of the Galaxy Correlation Function
• The $\text{Abacus}$ Cosmological $N$-body Code
• A New Method to Correct for Fiber Collisions in Galaxy Two-Point Statistics
• Velocity Bias from the Small Scale Clustering of SDSS-III BOSS Galaxies
• A scheme to deal accurately and efficiently with complex angular masks in galaxy surveys
• Nearest Neighbor distributions: new statistical measures for cosmological clustering
• The large-scale 3-point correlation function of the SDSS BOSS DR12 CMASS galaxies
• A High-Fidelity Realization of the Euclid Code Comparison $N$-body Simulation with Abacus
• Cosmic Emulation: Fast Predictions for the Galaxy Power Spectrum
• AbacusHOD: A highly efficient extended multi-tracer HOD framework and its application to BOSS and eBOSS data
• A marked correlation function for constraining modified gravity models
• \textsc{CompaSO}: A new halo finder for competitive assignment to spherical overdensities
• The Effect of Fiber Collisions on the Galaxy Power Spectrum Multipole
• Preliminary Target Selection for the DESI Luminous Red Galaxy (LRG) Sample
• The Stripe 82 Massive Galaxy Project II: Stellar Mass Completeness of Spectroscopic Galaxy Samples from the Baryon Oscillation Spectroscopic Survey
• Stringent ${\sigma }_8$ constraints from small-scale galaxy clustering using a hybrid MCMC+emulator framework
• Five-percent measurements of the growth rate from simulation-based modelling of redshift-space clustering in BOSS LOWZ
• Unbiased clustering estimation in the presence of missing observations
• Preliminary Target Selection for the DESI Emission Line Galaxy (ELG) Sample
• Exploring the squeezed three-point galaxy correlation function with generalized halo occupation distribution models
• Cosmological cross-correlations and nearest neighbor distributions
• Breaking Halo Occupation Degeneracies with Marked Statistics
• Illustrating galaxy-halo connection in the DESI era with IllustrisTNG
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Pairwise-Inverse-Probability and Angular Correction for Fibre Collisions in Clustering Measurements
• ADDGALS: Simulated Sky Catalogs for Wide Field Galaxy Surveys
• Unbiased clustering estimates with the DESI fibre assignment
• The Incomplete Conditional Stellar Mass Function: Unveiling the Stellar Mass Functions of Galaxies at 0.1 < Z < 0.8 from BOSS Observations
• Correcting for Fibre Assignment Incompleteness in the DESI Bright Galaxy Survey
• Cosmological parameter estimation via iterative emulation of likelihoods
• Towards Accurate Modelling of Galaxy Clustering on Small Scales: Testing the Standard $\Lambda \mathrm{CDM}$ + Halo Model
• Extensions to the halo occupation distribution model for more accurate clustering predictions
• Imprint of DESI fiber assignment on the anisotropic power spectrum of emission line galaxies
• The halo light cone catalogues of \Abacus{AbacusSummit}
• Likelihood-free Forward Modeling for Cluster Weak Lensing and Cosmology
• $\mathrm{S}\mathrm{IM}\mathrm{BIG}$: A Forward Modeling Approach To Analyzing Galaxy Clustering
• Self-Similarity of $k$-Nearest Neighbor Distributions in Scale-Free Simulations

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• Towards unveiling the large-scale nature of gravity with the wavelet scattering transform
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