Constraining the Dark Energy Equation of State with Cosmic Voids

Abstract

Our universe is observed to be accelerating due to the dominant dark energy with negative pressure. The dark energy equation of state (w) holds a key to understanding the ultimate fate of the universe. The cosmic voids behave like bubbles in the universe so that their shapes must be quite sensitive to the background cosmology. Assuming a flat universe and using the priors on the matter density parameter (Omega_m) and the dimensionless Hubble parameter (h), we demonstrate analytically that the ellipticity evolution of cosmic voids may be a sensitive probe of the dark energy equation of state. We also discuss the parameter degeneracy between w and Omega_m.

ApJL in press, growth factor corrected, parameter degeneracy calculated

References in corpus (6)

• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes
• WMAP constraints on low redshift evolution of dark energy
• Void Ellipticity Distribution as a Probe of Cosmology

Cited by in corpus (73)

• Tracing the cosmic web
• Dark energy two decades after: Observables, probes, consistency tests
• Cosmic Voids in Sloan Digital Sky Survey Data Release 7
• The darkness that shaped the void: dark energy and cosmic voids
• Precision cosmology with voids: definition, methods, dynamics
• Voids in massive neutrino cosmologies
• Massive Neutrinos Leave Fingerprints on Cosmic Voids
• The High Latitude Spectroscopic Survey on the Nancy Grace Roman Space Telescope
• Cosmic Voids and Void Lensing in the Dark Energy Survey Science Verification Data
• Redshift-space distortions around voids
• Voids as a Precision Probe of Dark Energy
• The Void Size Function in Dynamical Dark Energy Cosmologies
• A robust public catalogue of voids and superclusters in the SDSS Data Release 7 galaxy surveys
• The GIGANTES dataset: precision cosmology from voids in the machine learning era
• A Cosmic Void Catalog of SDSS DR12 BOSS Galaxies
• Linear redshift space distortions for cosmic voids based on galaxies in redshift space
• 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
• Finding cosmic voids and filament loops using topological data analysis
• Cosmological exploitation of the size function of cosmic voids identified in the distribution of biased tracers
• Euclid: Cosmological forecasts from the void size function
• The nature of voids: II. Tracing underdensities with biased galaxies
• Self-similarity and universality of void density profiles in simulation and SDSS data
• Real-space density profile reconstruction of stacked voids
• Measuring the mass distribution of voids with stacked weak lensing
• The structure of cosmic voids in a LCDM Universe
• Structural Analysis of the SDSS Cosmic Web I.Nonlinear Density Field Reconstructions
• DIVE in the cosmic web: voids with Delaunay Triangulation from discrete matter tracer distributions
• A Detection of $z$~2.3 Cosmic Voids from 3D Lyman-$\alpha$ Forest Tomography in the COSMOS Field
• Dark Energy Survey Year 1 Results: the lensing imprint of cosmic voids on the Cosmic Microwave Background
• Euclid: Forecasts from the void-lensing cross-correlation
• Voids and the Cosmic Web: cosmic depressions & spatial complexity
• Hydrodynamical simulations of coupled and uncoupled quintessence models I: Halo properties and the cosmic web
• Voids in Lyα Forest Tomographic Maps
• Cosmology with cosmic web environments I. Real-space power spectra
• The Gravitational Lensing Signatures of BOSS Voids in the Cosmic Microwave Background
• Testing the spherical evolution of cosmic voids
• DEMNUni: disentangling dark energy from massive neutrinos with the void size function
• The void halo mass function: a promising probe of neutrino mass
• The halo bias inside cosmic voids
• Void profile from Planck lensing potential map
• Effects of voids on the reconstruction of the equation of state of Dark Energy
• Dark Matter-Dark Energy Interaction and the Shape of Cosmic Voids
• How to Build a Catalogue of Linearly-Evolving Cosmic Voids
• Guess the cheese flavour by the size of its holes: A cosmological test using the abundance of Popcorn voids
• Beta-Skeleton Analysis of the Cosmic Web
• Matched filtering with interferometric 21cm experiments
• 1-DREAM: 1D Recovery, Extraction and Analysis of Manifolds in noisy environments
• Identification of Cosmic Voids as Massive Cluster Counterparts
• Separate Universe Void Bias
• How do galaxy properties affect void statistics?
• Dynamics of Void and its Shape in Redshift Space
• Challenges in Constraining Gravity with Cosmic Voids
• Non-comoving baryons and cold dark matter in cosmic voids
• A theoretical view of the T-web statistical description of the cosmic web
• Effects of dark matter pressure on the ellipticity of cosmic voids
• Unveiling the Universe with Emerging Cosmological Probes
• Dark Sector Coupling Bends the Superclusters
• Constraining cosmological parameters using void statistics from the SDSS survey
• Improved Lyman Alpha Tomography using Optimized Reconstruction with Constraints on Absorption (ORCA)
• The galaxy bias profile of cosmic voids
• An observational signal of the void shape correlation and its link to the cosmic web
• A spherical hydrodynamical model of cosmic voids in ΛCDM and beyond
• Effect of Dark Energy Perturbation on Cosmic Voids Formation
• Cluster-counterpart Voids: Void Identification from Galaxy Density Field
• Cosmology with Cosmic Voids
• Probing Time-Dependent Dark Energy with the Flux Power Spectrum of the Lyman $\alpha$ Forest
• Dynamical Evolution of Voids with Surrounding Gravitational Tidal Field
• An Anti-halo Void Catalogue of the Local Super-Volume
• Tracing cosmic voids with fast simulations
• Void spin distribution as a powerful probe of ${\sigma }_8$
• Tracing Cosmological Signature with Doppler Lensing: Insights from Cosmological Simulations
• Ringing the universe with cosmic emptiness: void properties through a combined analysis of stacked weak gravitational and Doppler lensing