Constraints on (Omega,Lambda) from strong lensing clusters
Astrophysics
2007-05-23 v1
Abstract
We use three strong lensing clusters to constrain the cosmological parameters Omega_m and Omega_lambda. Recent HST observations of galaxy clusters reveal a large number of multiple images, which are predicted to be at different redshifts. We showed in a previous work that if it is possible to measure spectroscopically the redshift of many multiple images then one can constrain (Omega_m,Omega_lambda) through ratios of angular diameter distances independently of any external assumptions. Using three strong lensing clusters, our combined results lead to tight constraints.
Cite
@article{arxiv.astro-ph/0109552,
title = {Constraints on (Omega,Lambda) from strong lensing clusters},
author = {G. Golse and J. -P. Kneib and G. Soucail},
journal= {arXiv preprint arXiv:astro-ph/0109552},
year = {2007}
}
Comments
2 pages, includes 4 figures, to appear in the proceedings of the Sesto 2001 International Workshop "Tracing Cosmic Evolution with Galaxy Clusters", July 2001, Sesto (Italy)