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Evolution of the Dark Matter Distribution with 3-D Weak Lensing | | D. J. Bacon
; A. N. Taylor
; M. L. Brown
; M. E. Gray
; C. Wolf
; K. Meisenheimer
; S. Dye
; L. Wisotzki
; A. Borch
; M. Kleinheinrich
; | | Date: |
16 Mar 2004 | | Journal: | Mon.Not.Roy.Astron.Soc. 363 (2005) 723-733 | | Subject: | astro-ph | | Affiliation: | IfA, Edinburgh, Nottingham, Oxford, MPIA, Heidelberg, Imperial College, London, Potsdam | | Abstract: | 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 | | Source: | arXiv, astro-ph/0403384 | | Services: | Forum | Review | PDF | Favorites | |
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