The Relevance of the Cosmological Constant for Lensing

Mustapha Ishak; Wolfgang Rindler (The University of Texas at Dallas)

arxiv: 1006.0014 · v1 · pith:JW6ET7XNnew · submitted 2010-05-31 · 🌌 astro-ph.CO · gr-qc

The Relevance of the Cosmological Constant for Lensing

Mustapha Ishak , Wolfgang Rindler (The University of Texas at Dallas) This is my paper

classification 🌌 astro-ph.CO gr-qc

keywords cosmologicalsomebendingconstanteffectlambdalensinglight

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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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