The number excess of galaxies around high redshift quasars

Details The number excess of galaxies around high redshift quasars The number excess of galaxies around high redshift quasars

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...221..221s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 221, no. 2, Sept. 1989, p. 221-229.

Statistics

Computation

35

Computational Astrophysics, Galaxies, Quasars, Red Shift, Astronomical Models, Astronomical Spectroscopy, Gravitational Lenses

Scientific paper

The question of whether the overdensity of galaxies around high-redshift quasars can be explained by gravitational lensing is addressed. A model is presented which neglects the effects of finite source size and the influence of galaxy-galaxy clustering on the expected galaxy density near quasars. The results suggest that lensing can lead to a significant overdensity of galaxies around high-redshift quasars. Possible modification of the simplified model, including the expected influence of galaxy-galaxy clustering, is discussed.

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