Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991qjras..32...85i&link_type=abstract
Royal Astronomical Society, Quarterly Journal (ISSN 0035-8738), vol. 32, June 1991, p. 85-112.
Astronomy and Astrophysics
Astronomy
17
Astronomical Models, Cosmology, Galaxies, Morphology, Spatial Distribution, Universe, Foams, Galactic Clusters, Many Body Problem, Mass Distribution, Sky Surveys (Astronomy)
Scientific paper
A geometrical model, called Voronoi foam, is presented for the asymptotic distribution of the cosmic mass on 10-200 Mpc scales. Voronoi foam represents a packing of polyhedral cells uniquely determined by the sites of the initial underdense regions. The Voronoi tesselation describes the large-scale galaxy distribution by forming a useful complement to N-body techniques with a low dynamic range, sampling noise, and boundary effects on very large scales. The Voronoi model makes it possible to study the consequences of a cellular galaxy distribution, in particular the cluster distribution and the appearance of deep pencil-beam surveys. It is found that the correlation function of the vertices in the Voronoi tessellation is a power law with a slope and amplitude totally in accordance with the observed cluster-cluster correlation. This finding indicates that the function could be due to cellular geometry of the galaxy distribution on large scales, rather than to the dynamics of these structures.
de Weygaert Rien van
Icke Vincent
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