The Alcock-Paczynski test in redshifted 21-cm maps

被引：44

作者：

Nusser, A ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[2] Technion Israel Inst Technol, Asher Space Res Inst, IL-32000 Haifa, Israel

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 364卷 / 02期

关键词：

intergalactic medium; cosmology : theory; large-scale structure of Universe;

D O I：

10.1111/j.1365-2966.2005.09603.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examine the possibility of constraining the cosmological mean mass and dark energy densities by an application of the Alcock-Paczynski test on redshifted 21-cm maps of the epoch of reionization. The 21-cm data will be provided as a function of frequency and angular positions on the sky. The ratio of the frequency to angular distance scales can be determined by inspecting the anisotropy pattern of the correlation function of brightness temperature. We assess the sensitivity of the distance ratio to the cosmological parameters and present a technique for disentangling geometric distortions from redshift-space distortions caused by peculiar motions.

引用

页码：743 / 750

页数：8

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