Cosmology with Void-Galaxy Correlations

Abstract

Galaxy bias, the unknown relationship between the clustering of galaxies and the underlying dark matter density field is a major hurdle for cosmological inference from large-scale structure. While traditional analyses focus on the absolute clustering amplitude of high-density regions mapped out by galaxy surveys, we propose a relative measurement that compares those to the underdense regions, cosmic voids. On the basis of realistic mock catalogs we demonstrate that cross correlating galaxies and voids opens up the possibility to calibrate galaxy bias and to define a static ruler thanks to the observable geometric nature of voids. We illustrate how the clustering of voids is related to mass compensation and show that volume-exclusion significantly reduces the degree of stochasticity in their spatial distribution. Extracting the spherically averaged distribution of galaxies inside voids from their cross correlations reveals a remarkable concordance with the mass-density profile of voids.

5 pages, 3 figures. Matches PRL published version after minor corrections

References in corpus (14)

• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
• ZOBOV: a parameter-free void-finding algorithm
• Halo Stochasticity from Exclusion and non-linear Clustering
• The darkness that shaped the void: dark energy and cosmic voids
• How to suppress the shot noise in galaxy surveys
• Clues on void evolution II: Measuring density and velocity profiles on SDSS galaxy redshift space distortions
• Clues on void evolution I: Large scale galaxy distributions around voids
• Anti-lensing: the bright side of voids
• Strong clustering of underdense regions and the environmental dependence of clustering from Gaussian initial conditions
• Optimal Weighting in Galaxy Surveys: Application to Redshift-Space Distortions
• Ringing the initial Universe: the response of overdensity and transformed-density power spectra to initial spikes
• One-point remapping of Lagrangian perturbation theory in the mildly non-linear regime of cosmic structure formation
• Equivalence Principle Violation in Weakly Vainshtein-Screened Systems

Cited by in corpus (87)

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• First measurement of gravitational lensing by cosmic voids in SDSS
• Cosmic Voids and Void Lensing in the Dark Energy Survey Science Verification Data
• Redshift-space distortions around voids
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• Assessment of the Information Content of the Power Spectrum and Bispectrum
• A measurement of the Alcock-Paczynski effect using cosmic voids in the SDSS
• Lensing Measurements of the Mass Distribution in SDSS Voids
• A marked correlation function for constraining modified gravity models
• The Void Size Function in Dynamical Dark Energy Cosmologies
• Precision cosmology with voids in the final BOSS data
• Large-Scale Clustering of Cosmic Voids
• The bias of cosmic voids in the presence of massive neutrinos
• The GIGANTES dataset: precision cosmology from voids in the machine learning era
• Voids in the SDSS DR9: observations, simulations, and the impact of the survey mask
• Multipole analysis of redshift-space distortions around cosmic voids
• On the linearity of tracer bias around voids
• Consistency of the growth rate in different environments with the 6dF Galaxy Survey: measurement of the void-galaxy and galaxy-galaxy correlation functions
• A halo bias function measured deeply into voids without stochasticity
• Euclid: Forecasts from redshift-space distortions and the Alcock-Paczynski test with cosmic voids
• The nature of voids: I. Watershed void finders and their connection with theoretical models
• Cosmic voids in modified gravity scenarios
• Cosmological constraints from the BOSS DR12 void size function
• Dark Energy Survey Year 1 results: The relationship between mass and light around cosmic voids
• Cluster-Void Degeneracy Breaking: Dark Energy, Planck and the Largest Cluster & Void
• On the relative bias of void tracers in the Dark Energy Survey
• Cosmic voids: a novel probe to shed light on our Universe
• Voids in Modified Gravity Reloaded: Eulerian Void Assignment
• The Persistent Percolation of Single-Stream Voids
• Testing cosmic geometry without dynamic distortions using voids
• Clues on void evolution III: Structure and dynamics in void shells
• Dark matter voids in the SDSS galaxy survey
• The view from the boundary: a new void stacking method
• The life and death of cosmic voids
• Measuring Baryon Acoustic Oscillations from the clustering of voids
• DIVE in the cosmic web: voids with Delaunay Triangulation from discrete matter tracer distributions
• Constraint of Void Bias on Primordial non-Gaussianity
• Euclid: Forecasts from the void-lensing cross-correlation
• The Effective Halo Model: Creating a Physical and Accurate Model of the Matter Power Spectrum and Cluster Counts
• Primordial non-Gaussianities and zero bias tracers of the Large Scale Structure
• Testing spherical evolution for modelling void abundances
• Voids in Lyα Forest Tomographic Maps
• Clustering and Bias Measurements of SDSS Voids
• A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
• Revealing the cosmic web dependent halo bias
• Cross-correlation of galaxies and galaxy clusters in the Sloan Digital Sky Survey and the importance of non-Poissonian shot noise
• Why Cosmic Voids Matter: Nonlinear Structure & Linear Dynamics
• Updated void catalogs of the SDSS DR7 main sample
• The VIMOS Public Extragalactic Redshift Survey - Searching for Cosmic Voids
• Non-fiducial cosmological test from geometrical and dynamical distortions around voids
• The halo bias inside cosmic voids
• Void profile from Planck lensing potential map
• DEMNUni: The imprint of massive neutrinos on the cross-correlation between cosmic voids and CMB lensing
• The Halo Void (Dust) Model of Large Scale Structure
• Cosmological parameter constraints from CMB lensing with cosmic voids
• The universal multiplicity function: counting halos and voids
• Improving baryon acoustic oscillation measurement with the combination of cosmic voids and galaxies
• The clustering of critical points in the evolving cosmic web
• Volume Statistics as a Probe of Large-Scale Structure
• Cosmological Probes of Structure Growth and Tests of Gravity
• Measurement of Void Bias Using Separate Universe Simulations
• The sparkling Universe: Clustering of voids and void clumps
• Separate Universe Void Bias
• Cosmic Reionization on Computers: Physical Origin of Long Dark Gaps in Quasar Absorption Spectra
• Got plenty of nothing: cosmic voids as a probe of particle dark matter
• Universal void density profiles from simulation and SDSS
• Unveiling the Universe with Emerging Cosmological Probes
• Intrinsic alignments of galaxies around cosmic voids
• Cosmic void exclusion models and their impact on the distance scale measurements from large scale structure
• A Comparison of Void-Finding Algorithms using Crossing Numbers
• Reconstructing matter profiles of spherically compensated cosmic regions in $\Lambda$CDM cosmology
• Black holes inside cosmic voids
• The galaxy bias profile of cosmic voids
• VIDE: The Void IDentification and Examination toolkit
• Effect of Dark Energy Perturbation on Cosmic Voids Formation
• The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Growth rate of structure measurement from cosmic voids
• AMADA-Analysis of Multidimensional Astronomical Datasets
• Analysis of Cosmological Generalized Reduced Void Probability Functions Constrained by Observations and Numerical Simulations
• Answers from the void: VIDE and its applications
• The invariance of group occupation across the cosmic web
• Ringing the universe with cosmic emptiness: void properties through a combined analysis of stacked weak gravitational and Doppler lensing
• Cosmic voids and BAO with relative baryon-CDM perturbations