Cosmic Evolution Impressions on Lensing Maps
| dc.creator | Guimarães, Antonio C. C. | |
| dc.date | 2003-04-18 | |
| dc.date.accessioned | 2026-07-07T02:08:17Z | |
| dc.date.available | 2026-07-07T02:08:17Z | |
| dc.description | I investigate through simulations the redshift dependence of several lensing measures for two cosmological models, a flat universe with a cosmological constant (\LambdaCDM), and an open universe (OCDM). I argue that quintessence models can be seen as an intermediate model between these two models under the weak gravitational lensing perspective. I calculate for the convergence field the angular power spectrum, the variance and higher order moments, the probability distribution function, and the Minkowski functionals. I find that in the redshift range examined (from z=0.7 to z=3 various statistics show an increase of the non-Gaussianity of the lensing maps for closer sources. Lensing surveys of higher redshift are expected to be less non-Gaussian than shallow ones because of the non-linear evolution of the density field, and the central limit theorem. | |
| dc.description | 13 pages, 12 figures, conference "Gravitational lensing: a unique tool for cosmology", Aussois, France, 2003 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0304342 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0304342 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/5982 | |
| dc.subject | Astrophysics | |
| dc.title | Cosmic Evolution Impressions on Lensing Maps | |
| dc.type | text |