Filaments and pancakes in the iras 1.2 Jy redshift catalog

B. S. Sathyaprakash, Varun Sahni, Sergei Shandarin, Karl B. Fisher

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


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 Q 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.

Original languageEnglish (US)
Pages (from-to)L109-L112
JournalAstrophysical Journal Letters
Issue number2
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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