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Gravitational Lenses and Dark Matter: Observations

Published online by Cambridge University Press:  04 August 2017

Edwin L. Turner
Edwin L. Turner*
Affiliation:
Princeton University Observatory, Princeton, NJ 08544 USA

Abstract

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Following a few general comments on gravitational lenses from an observer's perspective, the currently available observations of the six known gravitational lenses are summarized. Attention is then called to some regularities and peculiarities of the properties of the known lenses and to how they might be interpreted. The most important conclusions relevant to the dark matter problem which can be obtained from the current observations are that the distributions of mass and light appear to be quite different in at least some of the lensing objects and that objects with projected M/R values about ten times larger than those ordinarily associated with galaxies exist and are not too rare (assuming Λ = 0).

Type
Review Paper
Information
Symposium - International Astronomical Union , Volume 117: Dark Matter in the Universe , 1987 , pp. 227 - 239
Copyright
Copyright © Reidel 1987 

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