The Size of the Longest Filaments in the Universe

Abstract

We analyze the filamentarity in the Las Campanas redshift survey (LCRS) and determine the length scale at which filaments are statistically significant. The largest length-scale at which filaments are statistically significant, real objects, is between 70 to $80h^{-1}$Mpc, for the LCRS $-3^o$ slice. Filamentary features longer than $80h^{-1}$Mpc, though identified, are not statistically significant; they arise from chance alignments. For the five other LCRS slices, filaments of lengths $50h^{-1}$Mpc to $70h^{-1}$Mpc are statistically significant, but not beyond. These results indicate that while individual filaments up to $80h^{-1}$Mpc are statistically significant, the impression of structure on larger scales is a visual effect. On scales larger than $80h^{-1}$Mpc the filaments interconnect by statistical chance to form the filament-void network. The reality of the $80h^{-1}$Mpc features in the $-3^o$ slice make them the longest coherent features in the LCRS. While filaments are a natural outcome of gravitational instability, any numerical model attempting to describe the formation of large scale structure in the universe must produce coherent structures on scales that match these observations.

arXiv comment16 preprint pages, 4 figures, Replaced with accepted version in ApJ. Improved discussion and added references

References in corpus (20)

• The 2dF Galaxy Redshift Survey: Spectra and redshifts
• How Filaments are Woven into the Cosmic Web
• The First Data Release of the Sloan Digital Sky Survey
• The Las Campanas Redshift Survey
• The Supercluster-Void Network I. The Supercluster Catalogue and Large-Scale Distribution
• Shapefinders: A new shape diagnostic for large scale structure
• A 120-Mpc Periodicity in the Three-Dimensional Distribution of Galaxy Superclusters
• The Las Campanas Redshift Survey Galaxy-Galaxy Autocorrelation Function
• The 2D Power Spectrum of the Las Campanas Redshift Survey: Detection of Excess Power on 100 h^{-1} Mpc Scales
• The Angular Power Spectrum of Galaxies from Early SDSS Data
• Clusters and Superclusters in the Sloan Digital Sky Survey
• Measuring the Geometry and Topology of Large Scale Structure using SURFGEN: Methodology and Preliminary Results
• Voids in the LCRS versus CDM Models
• Evidence for Filamentarity in the Las Campanas Redshift Survey
• Two Dimensional Topology of Large Scale Structure in the Las Campanas Redshift Survey
• Detection of Network Structure in the Las Campanas Redshift Survey
• Clusters and Superclusters in the Las Campanas Redshift Survey
• The scale of homogeneity in the Las Campanas Redshift Survey
• Filaments and Pancakes in the IRAS 1.2 Jy Redshift Catalogue
• Topology of the Las Campanas Redshift Survey

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• The Luminosity, Colour and Morphology dependence of galaxy filaments in the Sloan Digital Sky Survey Data Release Four
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