Evidence for evolution in the clustering of quasars

Details Evidence for evolution in the clustering of quasars Evidence for evolution in the clustering of quasars

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990acaps..10..218z&link_type=abstract

(Acta Astrophysica Sinica, vol. 10, no. 3, 1990, p. 218-226) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 14, Dec.

Astronomy and Astrophysics

Astrophysics

1

Galactic Clusters, Galactic Evolution, Quasars, Astronomical Catalogs, Luminosity, Red Shift, Statistical Analysis

Scientific paper

The changes in the amplitude of the correlation function of quasar clustering with the redshift are discussed. Using the new Hewitt-Burbidge QSO catalog, it is found from a statistical analysis of the quasar pairs that the positive results of quasar clustering are mainly contributed by low-redshift quasars. There is an obvious change in the quasar distribution at z = 2. There is no clustering for z greater than 2. The difference in clustering is not due to any selection effect on the brightness. The evidence is that quasar clustering evolved with cosmological time.

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