High redshift quasars. II. The evolution of quasar space density.

Details High redshift quasars. II. The evolution of quasar space density. High redshift quasars. II. The evolution of quasar space density.

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pabei..10..190c&link_type=abstract

Prog. Astron., Vol. 10, No. 3, p. 190 - 200

Astronomy and Astrophysics

Astronomy

Scientific paper

The authors summarize what has been learned about the evolution of quasar space density (expressed in the form of luminosity function). A number of quasars with redshift z > 4 have been discovered in recent years, which provide important constraints to theoretical models for the large scale structure evolution of the universe and the formation of galaxies at early time. The evolution of the luminosity function of quasars for z < 2.2 can be described in rather simple term, i.e. a pure luminosity evolution. The results of a recent quasar survey at high redshift clearly demonstrate a marked decline in the space density of quasars brighter than MB = -2.6.

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