Gravitational Lensing and Tests of the Cosmological Constant
Astrophysics
2007-05-23 v1
Abstract
The case for a flat Cold Dark Matter model with a positive cosmological constant has been recently strongly advocated by some theoreticians. In this paper we give the observers point of view to the light of the most recent observations with a special emphasis on lensing tests. We confirm the apparent cosmic concordance for a flat Universe with close to 0.6 but we note that a low mass density open universe with no cosmological constant is still quite acceptable for most of the reliable observational tests, including lensing tests as well.
Keywords
Cite
@article{arxiv.astro-ph/9802006,
title = {Gravitational Lensing and Tests of the Cosmological Constant},
author = {B. Fort and Y. Mellier},
journal= {arXiv preprint arXiv:astro-ph/9802006},
year = {2007}
}
Comments
To appear in the "IVieme colloque de cosmologie". June 4-6 1997, Observatoire de Paris. Latex with sprocl.sty and psfig.sty. 9 pages. 22. Kb gzipped tar file