Filaments and pancakes in the IRAS 1.2 Jy Redshift Catalog

Sathyaprakash, Bangalore Suryanarayana ORCID: https://orcid.org/0000-0003-3845-7586, Sahni, Varun, Shandarin, Sergei and Fisher, Karl B. 1998. Filaments and pancakes in the IRAS 1.2 Jy Redshift Catalog. Astrophysical Journal 507 (2) , L109-L112. 10.1086/311689

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Abstract

We explore the shapes of clusters and superclusters in the IRAS 1.2 Jy redshift survey with three reconstructions spanning the range β=0.1, 0.5, and 1.0, where β=Ω0.6/b; b is the bias factor, and Ω is the present value of the dimensionless matter density. Comparing our results with Gaussian randomized reconstructions of the IRAS catalog, we find structures having both planar and filamentary properties. For β=0.5 and 1.0, the largest structures in the survey have a distinct tendency to be filament-like, in general agreement with the results of N-body simulations.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	cosmology: theory—galaxies: clusters: general—infrared: galaxies— large-scale structure of universe—methods: analytical—methods: numerical
Publisher:	IOP Publishing
ISSN:	0004-637X
Last Modified:	24 Oct 2022 10:49
URI:	https://orca.cardiff.ac.uk/id/eprint/45971

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