Void Galaxy Distribution: A Challenge for $\Lambda$CDM

Abstract

We extract void catalogs from the Sloan Digital Sky Survey Data Release 16 (SDSS DR16) survey and also from the Millennium simulation. We focus our comparison on distribution of galaxies brighter than $M_r<-18$ inside voids and study the mean separation of void galaxies, distance from the void center, and the radial density profile. We find that mean separation of void galaxies depends on void size, as bigger voids have lower mean separation in both samples. However, void galaxies in the observation sample seem to have generally larger mean-distance than simulated ones at any given void size. In addition, observed void galaxies tend to reside closer to the void center than those in the simulation. This discrepancy is also shown in the density profile of voids. Regardless of the void size, the central densities of real void profiles are higher than the ones in the predicted simulated catalog.

Accepted in ApJ Letter

References in corpus (56)

• Planck 2015 results. XIII. Cosmological parameters
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
• Properties of galaxies reproduced by a hydrodynamic simulation
• From dwarf spheroidals to cDs: Simulating the galaxy population in a LCDM cosmology
• Resolving Cosmic Structure Formation with the Millennium-II Simulation
• An Efficient Algorithm for Positioning Tiles in the Sloan Digital Sky Survey
• A hierarchy of voids: Much ado about nothing
• The Void Phenomenon
• Environmental Dependence of Properties of Galaxies in the Sloan Digital Sky Survey
• Cosmic Voids in Sloan Digital Sky Survey Data Release 7
• Voids in the PSCz Survey and the Updated Zwicky Catalog
• Precision cosmography with stacked voids
• The Aspen--Amsterdam Void Finder Comparison Project
• Universal Density Profile for Cosmic Voids
• Photometric Properties of Void Galaxies in the Sloan Digital Sky Survey
• Constraints on Cosmology and Gravity from the Dynamics of Voids
• Counting voids to probe dark energy
• The Spine of the Cosmic Web
• The Luminosity Function of Void Galaxies in the Sloan Digital Sky Survey
• Spectroscopic Properties of Void Galaxies in the Sloan Digital Sky Survey
• Voids in a $\Lambda$CDM Universe
• A public void catalog from the SDSS DR7 Galaxy Redshift Surveys based on the watershed transform
• The Void Galaxy Survey: Optical Properties and H I Morphology and Kinematics
• Spatial and Dynamical Properties of Voids in a LCDM Universe
• The Properties of Galaxies in Voids
• The Hierarchical Structure and Dynamics of Voids
• Beyond BAO: improving cosmological constraints from BOSS with measurement of the void-galaxy cross-correlation
• Cosmic Voids: structure, dynamics and galaxies
• Clues on void evolution II: Measuring density and velocity profiles on SDSS galaxy redshift space distortions
• The emptiness of voids: yet another over-abundance problem for the LCDM model
• Galaxy Voids in Cold Dark Matter Universes
• A measurement of the Alcock-Paczynski effect using cosmic voids in the SDSS
• Photometric Properties of Void Galaxies in the Sloan Digital Sky Survey DR7 Data Release
• An Imaging and Spectroscopic Survey of Galaxies within Prominent Nearby Voids. II. Morphologies, Star Formation and Faint Companions
• Clues on void evolution I: Large scale galaxy distributions around voids
• A robust public catalogue of voids and superclusters in the SDSS Data Release 7 galaxy surveys
• Voids in the 2dFGRS and LCDM simulations: spatial and dynamical properties
• The environmental dependence of the chemical properties of star-forming galaxies
• Simulating Voids
• Cosmic Voids in the SDSS DR12 BOSS Galaxy Sample: The Alcock-Paczynski Test
• On the universality of void density profiles
• A MST algorithm for source detection in gamma-ray images
• The life and death of cosmic voids
• The metallicity of void dwarf galaxies
• Voids in cosmological simulations over cosmic time
• The challenge of large and empty voids in the SDSS DR7 redshift survey
• The Optical Luminosity Function of Void Galaxies in the SDSS and ALFALFA Surveys
• Clustering and Bias Measurements of SDSS Voids
• The Size and Shape of Voids in Three-Dimensional Galaxy Surveys
• The Galaxy Population In Voids: Are All Voids The Same?
• Nebular metallicities in two isolated Local Void dwarf galaxies
• Determining the large-scale environmental dependence of gas-phase metallicity in dwarf galaxies
• Evolution of density and velocity profiles of dark matter and dark energy in spherical voids

Cited by in corpus (9)

• Why Cosmic Voids Matter: Nonlinear Structure & Linear Dynamics
• Hierarchical structure of the cosmic web and galaxy properties
• On the Merger Rate of Primordial Black Holes in Cosmic Voids
• Unveiling the Universe with Emerging Cosmological Probes
• Voids and Halos in Voids statistics as a probe of the Expansion History of the Universe
• One-point Statistics in various cosmic environments in the presence of massive neutrinos
• VEGA: Voids idEntification using Genetic Algorithm
• Addressing the too-big-to-fail problem and the void phenomenon through a modified initial power spectrum
• The Filament Rift: $\Lambda$CDM's Structural Challenge Against Observation