The topology of large-scale structure. VI - Slices of the universe

Details The topology of large-scale structure. VI - Slices of the universe The topology of large-scale structure. VI - Slices of the universe

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387....1p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 1, 1992, p. 1-8. Research supported by University of Kansas.

Statistics

Computation

37

Computational Astrophysics, Topology, Universe, Astronomical Models, Dark Matter, Gravitational Effects, Sky Surveys (Astronomy)

Scientific paper

Results of an investigation of the topology of large-scale structure in two observed slices of the universe are presented. Both slices pass through the Coma cluster and their depths are 100 and 230/h Mpc. The present topology study shows that the largest void in the CfA slice is divided into two smaller voids by a statistically significant line of galaxies. The topology of toy models like the white noise and bubble models is shown to be inconsistent with that of the observed slices. A large N-body simulation was made of the biased cloud dark matter model and the slices are simulated by matching them in selection functions and boundary conditions. The genus curves for these simulated slices are spongelike and have a small shift in the direction of a meatball topology like those of observed slices.

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