Please note that eDoc will be permanently shut down in the first quarter of 2021!      Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Quick Search
My eDoc
Session History
Support Wiki
Direct access to
document ID:

          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 276878.0, MPI für Astronomie / Publikationen_mpia
Evolution of the dark matter distribution with three-dimensional weak lensing
Authors:Bacon, D. J.; Taylor, A. N.; Brown, M. L.; Gray, M. E.; Wolf, C.; Meisenheimer, K.; Dye, S.; Wisotzki, L.; Borch, A.; Kleinheinrich, M.
Date of Publication (YYYY-MM-DD):2005
Title of Journal:Monthly Notices of the Royal Astronomical Society
Journal Abbrev.:Monthly Notices of the Royal Astronomical Society
Start Page:723
End Page:733
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We present a direct detection of the growth of large-scale structure, using weak gravitational lensing and photometric redshift data from the COMBO-17 survey. We use deep R-band imaging of two 0.5 _ 0.5 deg2 fields, affording shear estimates for over 52000 galaxies; we combine these with photometric redshift estimates from our 17-band survey, in order to obtain a 3D shear field. We find theoretical models for evolving matter power spectra and correlation functions, and fit the corresponding shear correlation functions to the data as a function of redshift. We detect the evolution of the power at the 4.7sigma level given reasonable priors, and measure the rate of evolution for 0 < z < 1. We also fit correlation functions to our 3D data as a function of cosmological parameters sigma8 and OmegaLambda. We find joint constraints on OmegaLambda and sigma8, demonstrating an improvement in accuracy by ~=40 per cent over that available from 2D weak lensing for the same area.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL: bib_query?b... [ID No:1]
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.