The Relevance of the Cosmological Constant for Lensing

Details The Relevance of the Cosmological Constant for Lensing The Relevance of the Cosmological Constant for Lensing

2010-05-31

arxiv.org/abs/1006.0014v1

Gen. Rel. Grav. 42: 2247-2268, 2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Invited review article to appear in the GRG special issue on gravitational lensing (P. Jetzer, Y. Mellier and V. Perlick Eds.)

Scientific paper

10.1007/s10714-010-0973-9

This review surveys some recent developments concerning the effect of the cosmological constant on the bending of light by a spherical mass in Kottler (Schwarzchild-de Sitter) spacetime. Some proposals of how such an effect may be put into a setting of gravitational lensing in cosmology are also discussed. The picture that emerges from this review is that it seems fair to assert that the contribution of $\Lambda$ to the bending of light has by now been well established, while putting the $\Lambda$ light-bending terms into a cosmological context is still subject to some interpretation and requires further work and clarification.

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