Constraints on (Omega_M0, Omega_Lambda) from strong lensing in AC 114
| dc.creator | Golse, G. | |
| dc.creator | Kneib, J. -P. | |
| dc.creator | Soucail, G. | |
| dc.date | 2002-05-21 | |
| dc.date.accessioned | 2026-07-07T02:03:44Z | |
| dc.date.available | 2026-07-07T02:03:44Z | |
| dc.description | We use a strong lensing inversion in the cluster of galaxies AC 114 to derive constraints on the cosmological parameters Omega_M0 and Omega_Lambda. If it is possible to measure spectroscopically the redshifts of many multiple images then one can in principle constrain (Omega_M0,Omega_Lambda) through ratios of angular diameter distances, independently of any external assumptions. Numerical tests on simulated data show rather good constraints from this test. We also use an analytic ``pseudo-elliptical'' NFW profile in the simulations, following the general new formalism we present. An application to AC 114 favors a flat Universe, an EdS model being marginally ruled out. | |
| dc.description | 4 pages, 4 figures. To appear in the proceedings of the "XXXVIIe Rencontres de Moriond : Le Modele Cosmologique /The Cosmological Model" (March 16-23, 2002) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0205357 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0205357 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/4488 | |
| dc.subject | Astrophysics | |
| dc.title | Constraints on (Omega_M0, Omega_Lambda) from strong lensing in AC 114 | |
| dc.type | text |