Maximal lens bounds on QSO-galaxy association

Details Maximal lens bounds on QSO-galaxy association Maximal lens bounds on QSO-galaxy association

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341l...1k&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 341, June 1, 1989, p. L1-L4.

Statistics

Computation

31

Computational Astrophysics, Galaxies, Gravitational Lenses, Quasars, Background Radiation, Brightness Distribution, Image Processing

Scientific paper

The maximal possible enhancement of QSO number counts that can be produced by any ensemble of lenses which conserve brightness and in which the magnification probability is negligibly correlated with the intrinsic QSO flux is obtained. Under the assumption of the Boyle et al. (1988) number-magnitude relation for the QSOs unaffected by lenses, the theory is applied to the QSO-galaxy association sample of Webster et al. (1988). The results suggest that the background QSOs of Webster et al. may be appreciably affected by lensing.

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