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Research in extragalactic astrophysicsThe spatial distribution of clusters of galaxies and the large scale structure of the universe is investigated. Correlations in the spatial cluster distribution are much stronger than those seen for galaxies, and over scales much larger than previously anticipated. The following main studies are completed and published; (1) The determination of the correlation functions of rich clusters of galaxies, and its dependence on richness and other parameters. Very large scale structure exists in the universe, and rich clusters participate in this structure more efficiently than galaxies. (2) A complete catalog of superclusters, is determined. The selection criteria is that of a volume density enhancement, and is done in 3 dimensions. (3) The giant galaxy void in Bootes is found to be surrouned by rich, large superclusters from the catalog described above. (4) A very large scale void of rich clusters of galaxies is found in the study of the spatial distribution of rich clusters.
Document ID
19840018468
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Bahcall, N. (Princeton Univ. NJ, United States)
Date Acquired
September 4, 2013
Publication Date
June 1, 1984
Subject Category
Astrophysics
Report/Patent Number
NASA-CR-173608
NAS 1.26:173608
Accession Number
84N26536
Funding Number(s)
CONTRACT_GRANT: NSG-7256
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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