Rapid modelling of the redshift-space power spectrum multipoles for a masked density field

被引：69
作者：
Wilson, M. J. [1 ]
Peacock, J. A. [1 ]
Taylor, A. N. [1 ]
de la Torre, S. [2 ]
机构：
[1] Univ Edinburgh, Inst Astron, Royal Observ, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland
[2] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 464卷 / 03期
关键词：
cosmology: observations; cosmology: theory; large-scale structure of Universe; LARGE-SCALE STRUCTURE; GALAXY SURVEYS; DISTORTIONS; OMEGA;
D O I：
10.1093/mnras/stw2576
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this work, we reformulate the forward modelling of the redshift-space power spectrum multipole moments for a masked density field, as encountered in galaxy redshift surveys. Exploiting the symmetries of the redshift-space correlation function, we provide a maskedfield generalization of the Hankel transform relation between the multipole moments in real and Fourier space. Using this result, we detail how a likelihood analysis requiring computation for a broad range of desired P(k) models may be executed 103-104 times faster than with other common approaches, together with significant gains in spectral resolution. We present a concrete application to the complex angular geometry of the VIMOS Public Extragalactic Redshift Survey PDR-1 release and discuss the validity of this technique for finite-angle surveys.
引用
收藏
页码：3121 / 3130
页数：10
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