Cross-correlation of CMB with large-scale structure: weak gravitational lensing

Details Cross-correlation of CMB with large-scale structure: weak gravitational lensing Cross-correlation of CMB with large-scale structure: weak gravitational lensing

2004-05-31

arxiv.org/abs/astro-ph/0406004v2

Phys.Rev. D70 (2004) 103501

Astronomy and Astrophysics

Astrophysics

24 pages, 13 figs; matches PRD accepted version

Scientific paper

10.1103/PhysRevD.70.103501

We present the results of a search for gravitational lensing of the cosmic microwave background (CMB) in cross-correlation with the projected density of luminous red galaxies (LRGs). The CMB lensing reconstruction is performed using the first year of Wilkinson Microwave Anisotropy Probe (WMAP) data, and the galaxy maps are obtained using the Sloan Digital Sky Survey (SDSS) imaging data. We find no detection of lensing; our constraint on the galaxy bias derived from the galaxy-convergence cross-spectrum is $b_g=1.81\pm 1.92$ ($1\sigma$, statistical), as compared to the expected result of $b_g\sim 1.8$ for this sample. We discuss possible instrument-related systematic errors and show that the Galactic foregrounds are not important. We do not find any evidence for point source or thermal Sunyaev-Zel'dovich effect contamination.

Affiliated with

Also associated with

No associations

Rating

Cross-correlation of CMB with large-scale structure: weak gravitational lensing 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 Cross-correlation of CMB with large-scale structure: weak gravitational lensing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-correlation of CMB with large-scale structure: weak gravitational lensing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-267070