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28 March 2024
 
  » arxiv » astro-ph/0109552

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Constraints on (Omega,Lambda) from strong lensing clusters
G. Golse ; J.-P. Kneib ; G. Soucail ;
Date 28 Sep 2001
Subject astro-ph
AffiliationOMP, Toulouse, France
AbstractWe 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.
Source arXiv, astro-ph/0109552
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