Measuring dark energy with the integrated Sachs-Wolfe effect

Details Measuring dark energy with the integrated Sachs-Wolfe effect Measuring dark energy with the integrated Sachs-Wolfe effect

2008-05-23

arxiv.org/abs/0805.3645v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures. Talk given in the "43rd Rencontres de Moriond", La Thuile (Val d'Aosta, Italy)

Scientific paper

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.

Affiliated with

Also associated with

No associations

Rating

Measuring dark energy with the integrated Sachs-Wolfe effect does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measuring dark energy with the integrated Sachs-Wolfe effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring dark energy with the integrated Sachs-Wolfe effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-500583