Superpancakes and the cluster correlation function

Journal Article · Sat Sep 15 04:00:00 EDT 1984 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/162426· OSTI ID:5951450

Dekel, A

It is proposed that the apparent difference between the clustering lengths of galaxies and of rich clusters reflects the fact that galaxies populate lambda/sub g/approx.20--30 Mpc h/sup -1/ pancakes (flat or elongated) while clusters are distributed in lambda/sub c/approx.100--150 Mpc h/sup -1/ superpancakes. The correlation functions near unity are assumed to have grown because of the large-scale pancaking process rather than by hierarchical clustering due to local gravity. Such a structure of flattened, first order and second order superclusters arises if the linear spectrum of perturbations had two coherence lengths associated with amplitude jumps on the corresponding scales. The rms amplitude ratio delta(lambda/sub g/)/delta(lambda/sub c/) should be 3:1, which could be provided by an n> or =-1 spectrum after recombination. On the scale of superpancakes delta(lambda/sub c/)approx.0.5 today.

• Research Organization: Department of Astronomy, Yale University
• OSTI ID: 5951450
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 284:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
BARYONS
COSMOLOGY
DISTRIBUTION
ELEMENTARY PARTICLES
FERMIONS
GALACTIC EVOLUTION
GALAXIES
GALAXY CLUSTERS
HADRONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
NEUTRINOS
SPATIAL DISTRIBUTION
SPECTRA
UNIVERSE