Cluster-Void Degeneracy Breaking: Dark Energy, Planck and the Largest Cluster & Void

Abstract

Combining galaxy cluster and void abundances breaks the degeneracy between mean matter density ${\Omega }_{\mathrm{m}}$ and power spectrum normalization ${\sigma }_8$. In a first for voids, we constrain ${\Omega }_{\mathrm{m}}=0.21\pm 0.10$ and ${\sigma }_8=0.95\pm 0.21$ for a flat $\Lambda$CDM universe, using extreme-value statistics on the claimed largest cluster and void. The Planck-consistent results detect dark energy with two objects, independently of other dark energy probes. Cluster-void studies also offer complementarity in scale, density, and non-linearity - of particular interest for testing modified-gravity models.

13 pages, 1 figure, 2 tables. ApJL accepted, revised version. Minor changes: added clarifying remarks, discussion on redshift sensitivity and more general models. Results and conclusions unchanged

References in corpus (8)

• Detection of a Supervoid Aligned with the Cold Spot of the Cosmic Microwave Background
• Can a supervoid explain the Cold Spot?
• Implications of multiple high-redshift galaxy clusters
• Voids in Modified Gravity Reloaded: Eulerian Void Assignment
• The Jubilee ISW Project II: observed and simulated imprints of voids and superclusters on the cosmic microwave background
• Dark matter voids in the SDSS galaxy survey
• A Study of High-Order Non-Gaussianity with Applications to Massive Clusters and Large Voids
• On the Abundance of Extreme Voids

Cited by in corpus (36)

• Fundamental Physics with the Square Kilometre Array
• Cosmology with Phase 1 of the Square Kilometre Array; Red Book 2018: Technical specifications and performance forecasts
• Constraints on Cosmology and Gravity from the Dynamics of Voids
• Extreme Value Statistics of the Halo and Stellar Mass Distributions at High Redshift: are JWST Results in Tension with ΛCDM?
• Cosmic Voids and Void Lensing in the Dark Energy Survey Science Verification Data
• The KBC void and Hubble tension contradict $\Lambda$CDM on a Gpc scale $-$ Milgromian dynamics as a possible solution
• A massive blow for $\Lambda$CDM $-$ the high redshift, mass, and collision velocity of the interacting galaxy cluster El Gordo contradicts concordance cosmology
• Cosmic voids in modified gravity models with massive neutrinos
• Euclid: Cosmological forecasts from the void size function
• Imprint of DES super-structures on the Cosmic Microwave Background
• Cosmological constraints from the BOSS DR12 void size function
• Cosmic troublemakers: the Cold Spot, the Eridanus Supervoid, and the Great Walls
• Measuring Baryon Acoustic Oscillations from the clustering of voids
• Cluster-void degeneracy breaking: Neutrino properties and dark energy
• Head-to-Toe Measurement of El Gordo: Improved Analysis of the Galaxy Cluster ACT-CL J0102-4915 with New Wide-field Hubble Space Telescope Imaging Data
• Cosmological exploitation of cosmic void statistics - New numerical tools in the CosmoBolognaLib to extract cosmological constraints from the void size function
• A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
• The perspective of voids on rising cosmology tensions
• DEMNUni: disentangling dark energy from massive neutrinos with the void size function
• Exploring the cosmological synergy between galaxy cluster and cosmic void number counts
• The halo bias inside cosmic voids
• The Halo Void (Dust) Model of Large Scale Structure
• Cluster-Void Degeneracy Breaking: Modified Gravity in the Balance
• On the Significance of Rare Objects at High Redshift: The Impact of Cosmic Variance
• How do galaxy properties affect void statistics?
• On the Merger Rate of Primordial Black Holes in Cosmic Voids
• Got plenty of nothing: cosmic voids as a probe of particle dark matter
• X-ray cluster cosmology
• Unveiling the Universe with Emerging Cosmological Probes
• Constraining cosmological parameters using void statistics from the SDSS survey
• The galaxy bias profile of cosmic voids
• Cosmology with voids from the Nancy Grace Roman Space Telescope
• A spherical hydrodynamical model of cosmic voids in ΛCDM and beyond
• On the Abundance of Extreme Voids II: A Survey of Void Mass Functions
• Cosmology with Cosmic Voids
• Ringing the universe with cosmic emptiness: void properties through a combined analysis of stacked weak gravitational and Doppler lensing