The Shape, Multiplicity, and Evolution of Superclusters in LambdaCDM Cosmology

Abstract

We determine the shape, multiplicity, size, and radial structure of superclusters in the LambdaCDM concordance cosmology from z = 0 to z = 2. Superclusters are defined as clusters of clusters in our large-scale cosmological simulation. We find that superclusters are triaxial in shape; many have flattened since early times to become nearly two-dimensional structures at present, with a small fraction of filamentary systems. The size and multiplicity functions are presented at different redshifts. Supercluster sizes extend to scales of ~ 100 - 200 Mpc/h. The supercluster multiplicity (richness) increases linearly with supercluster size. The density profile in superclusters is approximately isothermal (~ R^{-2}) and steepens on larger scales. These results can be used as a new test of the current cosmology when compared with upcoming observations of large-scale surveys.

arXiv comment33 pages, 15 figures, accepted to ApJ; minor content changes, some figures removed to shorten paper

References in corpus (17)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Sloan Digital Sky Survey: Technical Summary
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Spectroscopic Target Selection in the Sloan Digital Sky Survey: The Main Galaxy Sample
• The Cosmic Triangle: Revealing the State of the Universe
• A Map of the Universe
• Large Synoptic Survey Telescope: Overview
• Cluster Alignments and Ellipticities in LCDM Cosmology
• Creating Spectral Templates from Multicolor Redshift Surveys
• Spectral Templates from Multicolor Redshift Surveys
• The 2dF Galaxy Redshift Survey: Wiener Reconstruction of the Cosmic Web
• Tree-Particle-Mesh: an adaptive, efficient, and parallel code for collisionless cosmological simulation
• Clusters and Superclusters in the Sloan Digital Sky Survey
• Reconstructing Galaxy Spectral Energy Distributions from Broadband Photometry
• Clusters and Superclusters in the Las Campanas Redshift Survey
• Supercluster Properties as a Cosmological Probe
• Why is the Zel'dovich Approximation so Accurate?

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