Void-Supercluster Alignments

Abstract

We investigate alignments between the spin axes of cosmic voids and the principal axes of nearby superclusters using the Millennium Run simulation of a LCDM cosmology. The concept of void spin was first introduced by Lee and Park in 2006 to quantify the tidal effect on voids from the surrounding matter distribution. Our numerical analysis reveals that the void spin axes are strongly aligned with the supercluster minor axes, but anti-aligned with the major axes, and have no correlations with the intermediate axes. We provide physical explanations to this numerical results on the basis of tidally induced correlations. It is expected that our work will provide a new insight into the characterization of the cosmic web on the largest scale.

accepted by ApJ, revised version, improved analysis and discussion, 4 more figures added, 18 pages, 8 figures

References in corpus (13)

• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• A hierarchy of voids: Much ado about nothing
• Voids in the PSCz Survey and the Updated Zwicky Catalog
• Voids in the 2dF Galaxy Redshift Survey
• The structure of voids
• Voids in a $\Lambda$CDM Universe
• Galaxy Spin Statistics and Spin-Density Correlation
• Morphology of the supercluster-void network in LCDM cosmology
• Shapes and Sizes of Voids in the LCDM Universe: Excursion Set Approach
• The Evolution of Voids in the Adhesion Approximation
• The Shape-Alignment relation in $\Lambda$CDM Cosmic Structures
• Rotation of Cosmic Voids and Void-Spin Statistics
• The Shape, Multiplicity, and Evolution of Superclusters in LambdaCDM Cosmology

Cited by in corpus (11)

• A public void catalog from the SDSS DR7 Galaxy Redshift Surveys based on the watershed transform
• Sparse sampling, galaxy bias, and voids
• A robust public catalogue of voids and superclusters in the SDSS Data Release 7 galaxy surveys
• Large-Scale Clustering of Cosmic Voids
• Alignments of Voids in the Cosmic Web
• Voids in the SDSS DR9: observations, simulations, and the impact of the survey mask
• Self-similarity and universality of void density profiles in simulation and SDSS data
• Future virialized structures: An analysis of superstructures in SDSS-DR7
• The Size Distribution of Void Filaments in a LCDM Cosmology
• Void alignment and density profile applied to measuring cosmological parameters
• An observational signal of the void shape correlation and its link to the cosmic web