Evolution of the dark matter distribution with 3-D weak lensing

被引：1

作者：

Bacon, D. J. ^{[1
]}

Taylor, A. N. ^{[1
]}

Brown, M. L. ^{[1
]}

Gray, M. E. ^{[1
]}

Wolf, C. ^{[1
]}

Meisenheimer, K. ^{[1
]}

Dye, S. ^{[1
]}

Wisotzki, L. ^{[1
]}

Borch, A. ^{[1
]}

Kleinheinrich, M. ^{[1
]}

机构：

[1] Univ Edinburgh, Astron Inst, Edinburgh EH9 3HJ, Midlothian, Scotland

来源：

IMPACT OF GRAVITIONAL LENSING ON COSMOLOGY | 2005年 / 225卷

关键词：

D O I：

10.1017/S1743921305001778

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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. Deep R-band imaging of two 0.5 x 0.5 square degree fields is used to provide shear estimates for over 52000 galaxies; these are combined with photometric redshift estimates from our 17 band survey, in order to obtain a 3-D shear field. We discuss how theoretical models for evolving matter power spectra and correlation functions cab be used to find a best fit to this 3-D shear field. We present the detection of the evolution of the power, and measurements of the rate of evolution for 0 < z < 1. We discuss future refinements which will improve the accuracy with which the effect can be measured.

引用

页码：37 / 42

页数：6

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