Measuring dark energy with the integrated Sachs-Wolfe effect
| dc.creator | Giannantonio, Tommaso | |
| dc.date | 2008-05-23 | |
| dc.date.accessioned | 2026-07-07T09:40:40Z | |
| dc.date.available | 2026-07-07T09:40:40Z | |
| dc.description | I present to this conference our latest measurements of the integrated Sachs-Wolfe (ISW) effect. After a brief review of the reasons for which this effect arises and of the technique to detect it by cross-correlating the cosmic microwave background (CMB) with the large scale structure of the Universe (LSS), I describe the current state of the art measurement. This is obtained from a combined analysis of six different galaxy datasets, and has a significance level of ~ 4.5 sigma. I then describe the cosmological implications, which show agreement with a flat LCDM model with Omega_m = 0.20 +0.19 -0.11 at 95% confidence level. I finally show how these data can be used to constrain modified gravity theories, focusing in particular on the Dvali-Gabadaze-Porrati (DGP) model. | |
| dc.description | 4 pages, 3 figures. Talk given in the "43rd Rencontres de Moriond", La Thuile (Val d'Aosta, Italy) | |
| dc.identifier | https://arxiv.org/abs/0805.3645 | |
| dc.identifier | http://arxiv.org/abs/0805.3645 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/161555 | |
| dc.subject | Astrophysics | |
| dc.title | Measuring dark energy with the integrated Sachs-Wolfe effect | |
| dc.type | text |