Gravitational lenses and the brightness distribution of distant sources

Details Gravitational lenses and the brightness distribution of distant sources Gravitational lenses and the brightness distribution of distant sources

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...197...63k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 197, no. 1-2, May 1988, p. 63-68.

Statistics

Computation

7

Brightness Distribution, Cosmology, Galactic Nuclei, Gravitational Lenses, Quasars, Seyfert Galaxies, Computational Astrophysics, Galactic Clusters, Geometrical Optics

Scientific paper

The brightness distribution of distant and compact sources due to gravitational lensing is investigated, with an emphasis on the high amplification part of the distribution. In the case of extended deflectors (≡ King galaxies) with short focal lengths there is often found a significant higher probability of getting high amplifications than with point mass deflectors found earlier by Refsdal (1970) (up to a factor 6). From their results, however, the authors cannot explain all quasars as highly amplified images of Seyfert galaxy nuclei.

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