Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-23
Astrophys.J. 616 (2004) 8-15
Astronomy and Astrophysics
Astrophysics
8 pages, 8 figures. Expanded discussion of systematic errors and kSZ effect, including new figure; version accepted by ApJ
Scientific paper
10.1086/424808
Galaxy clusters will distort the pattern of temperature anisotropies in the microwave background via gravitational lensing. We create lensed microwave background maps using clusters drawn from numerical cosmological simulations. A distinctive dipole-like temperature fluctuation pattern is formed aligned with the underlying microwave temperature gradient. For a massive cluster, the characteristic angular size of the temperature distortion is a few arcminutes and the characteristic amplitude a few micro-Kelvin. We demonstrate a simple technique for estimating the lensing deflection induced by the cluster; microwave background lensing measurements have the potential to determine the mass distribution for some clusters with good accuracy on angular scales up to a few arcminutes. Future high-resolution and high-sensitivity microwave background maps will have the capability to detect lensing by clusters; we discuss various systematic limitations on probing cluster masses using this technique.
Holder Gilbert P.
Kosowsky Arthur
No associations
LandOfFree
Gravitational Lensing of the Microwave Background by Galaxy Clusters 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 of the Microwave Background by Galaxy Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational Lensing of the Microwave Background by Galaxy Clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-454857