Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...369..287w&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 369, March 10, 1991, p. 287-299. Research supported by NSERC, U.S. - Israel
Astronomy and Astrophysics
Astrophysics
56
Astronomical Models, Dark Matter, Galactic Clusters, Galactic Evolution, Cold Plasmas, Computerized Simulation, Power Spectra, Star Distribution
Scientific paper
The relative orientations of neighboring clusters of galaxies in a universe dominated by cold dark matter (CDM) are examined using N-body simulations. A clear tendency is found for the major axes of neighboring clusters to be aligned for separations up to 10-15/sq h Mpc when all clusters pairs are included. When only those clusters which reside within superclusters are considered, alignments are found over even larger scales, up to about 30/sq h Mpc. The orientations of cluster minor axes also provide supporting evidence of the presence of filamentary rather than sheetlike features in the large-scale mass distributions. These findings agree well with observational results. The results indicate that a CDM-dominated universe can account for many of the observed features of the large-scale structure.
Dekel Avishai
Villumsen Jens V.
West Michael J.
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