Cosmic gravitational lenses and the evolution of quasars. II

Details Cosmic gravitational lenses and the evolution of quasars. II Cosmic gravitational lenses and the evolution of quasars. II

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988s%26w....27..220k&link_type=abstract

Sterne und Weltraum (ISSN 0039-1263), vol. 27, April 1988, p. 220-222. In German.

Astronomy and Astrophysics

Astronomy

Black Holes (Astronomy), Galactic Evolution, Gravitational Lenses, Quasars, Radio Sources (Astronomy), Spiral Galaxies, Astronomical Spectroscopy, Charge Coupled Devices, Galactic Nuclei, Line Spectra

Scientific paper

The possibility that the brightness of certain quasars could be due to gravitational lensing of their light is addressed. It is argued that the existence of a black hole in such quasars could produce this brightness without the need for gravitational lensing. It is also argued that, since the brightest quasars occur only at relatively close distances, there is a lack of foreground galaxies to serve as lenses.

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