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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 | Affiliation: | OMP, Toulouse, France | 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. | Source: | arXiv, astro-ph/0109552 | Services: | Forum | Review | PDF | Favorites |
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