Possible existence of quasi-stellar-object clusters

Details Possible existence of quasi-stellar-object clusters Possible existence of quasi-stellar-object clusters

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982acaps...1..243l&link_type=abstract

(Acta Astrophysica Sinica, vol. 1, July 1981, p. 243-248.) Chinese Physics, vol. 2, July-Sept. 1982, p. 695-699. Translation.

Physics

Astronomical Models, Cosmology, Light Emission, Quasars, Red Shift, Deceleration, Diameters, Size Determination, Spatial Distribution

Scientific paper

Reference is made to the apparent local 'clustering' found among the 1054 known QSOs. Assuming that some of them constitute real QSO clusters and that the redshifts of their constituents are cosmological, a method to determine independently the (cosmological) deceleration parameter is proposed. The method relates this parameter to such observational data as the angular diameter of the cluster and the maximum and minimum redshifts of the constituent QSOs. By the same token, given a value of the deceleration parameter, the angular diameter may be computed instead within the same framework. Reasonable agreement is found between the computed and observed angular diameters for all four 'clusters' under study for parameter values in the range 3.5-4.0. This is seen as favoring the view of a 'closed' universe. The conclusion is that some apparent local QSO clustering may indeed be associated with real QSO clusters in space. With the method described here, the accuracy with which the deceleration parameter can be determined is primarily limited by the uncertainty in the observed angular diameter.

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