Fragmenting the universe

Details Fragmenting the universe Fragmenting the universe

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...184...16i&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 184, no. 1-2, Oct. 1987, p. 16-32.

Astronomy and Astrophysics

Astrophysics

94

Cosmology, Galactic Clusters, Mathematical Models, Universe, Algorithms, Monte Carlo Method, Morphology

Scientific paper

The authors present a Monte Carlo study of the matter distribution in a kinematical model of superclustering in the Universe. It has been shown (Centrella and Melott, 1983; Icke, 1984) that the regions of lower than average density in the early Universe become more and more spherical as time goes by. Thus, the large scale morphology of the high-density baryonic material in the Universe, consisting of "clusters" in the form of pancakes, filaments, and nodes is obtained when matter streams away from a distribution of low-density expansion centres ("nuclei") and collects in the interstices of a close packing of spheres. This naturally leads to a partitioning of space generated by a process known as Voronoi tessellation. The authors have studied the statistical properties of specific instances of these tessellations, which they call Voronoi foams, for several model distributions of expansion centres.

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