Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-08-26
ApJ (2000) 533, L83
Astronomy and Astrophysics
Astrophysics
6 pages, 2 figures; replaced with published version
Scientific paper
10.1086/312613
We investigate the weak gravitational lensing effect due to the large-scale structure of the universe on two-point correlations of local maxima ({\em hotspots}) in the 2D sky map of the cosmic microwave background (CMB) anisotropy. According to the Gaussian random statistics as most inflationary scenarios predict, the hotspots are discretely distributed with some {\em characteristic} angular separations on the last scattering surface owing to oscillations of the CMB angular power spectrum. The weak lensing then causes pairs of hotspots which are separated with the characteristic scale to be observed with various separations. We found that the lensing fairly smoothes the oscillatory features of the two-point correlation function of hotspots. This indicates that the hotspots correlations can be a new statistical tool for measuring shape and normalization of the power spectrum of matter fluctuations from the lensing signatures.
Futamase Toshifumi
Komatsu Eiichiro
Takada Masahiro
No associations
LandOfFree
Gravitational Lensing Effect on the Two-point Correlation of Hotspots in the Cosmic Microwave Background 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 Gravitational Lensing Effect on the Two-point Correlation of Hotspots in the Cosmic Microwave Background, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational Lensing Effect on the Two-point Correlation of Hotspots in the Cosmic Microwave Background will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-476737