Evolution of the Dark Matter Distribution with 3-D Weak Lensing

Details Evolution of the Dark Matter Distribution with 3-D Weak Lensing Evolution of the Dark Matter Distribution with 3-D Weak Lensing

2004-03-16

arxiv.org/abs/astro-ph/0403384v1

Mon.Not.Roy.Astron.Soc.363:723-733,2005

Astronomy and Astrophysics

Astrophysics

11 pages, 4 figures; submitted to MNRAS

Scientific paper

10.1111/j.1365-2966.2005.09420.x

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 0.25 square degree 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 3-D 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 7.7 sigma level given minimal priors, and measure the rate of evolution for 0

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