2dF 星系红移测量：对最终目录中涨落的球谐函数分析
天体物理学
2011-03-10 v1
摘要
我们对2dFGRS星系涨落场进行分解，采用球谐正交基与球贝塞尔函数。预期星系直接遵循密度场的整体运动，因此观测到的大尺度红移空间扭曲的绝对�幅预期与星系属性无关。通过将涨落场划分为径向与角向分量，我们线性建模观测到的扭曲，并获得宇宙学约束 Omega_m^{0.6} sigma_8=0.46+/-0.06。线性红移空间扭曲相对于星系涨落场的�幅随星系属性而异。对于红移z=0处的L_*星系，我们测得 beta(L_*,0)=0.58+/-0.08，涨落�幅 b(L_*,0) sigma_8=0.79+/-0.03，边际化对功率谱形状参数。假设功率谱形状固定且符合完整傅里叶分析，得到的约束与此相似。
引用
@article{arxiv.astro-ph/0406513,
title = {The 2dF Galaxy Redshift Survey: Spherical Harmonics analysis of fluctuations in the final catalogue},
author = {Will J. Percival and Daniel Burkey and Alan Heavens and Andy Taylor and Shaun Cole and John A. Peacock and Carlton M. Baugh and Joss Bland-Hawthorn and Terry Bridges and Russell Cannon and Matthew Colless and Chris Collins and Warrick Couch and Gavin Dalton and Roberto De Propris and Simon P. Driver and George Efstathiou and Richard S. Ellis and Carlos S. Frenk and Karl Glazebrook and Carole Jackson and Ofer Lahav and Ian Lewis and Stuart Lumsden and Steve Maddox and Peder Norberg and Bruce A. Peterson and Will Sutherland and Keith Taylor},
journal= {arXiv preprint arXiv:astro-ph/0406513},
year = {2011}
}
备注
19 pages, 11 figures, MNRAS accepted