Inflationary potential from 21 cm tomography and Planck

被引：16

作者：

Barger, Vernon ^{[2
]}

Gao, Yu ^{[2
]}

Mao, Yi ^{[3
,4
]}

Marfatia, Danny ^{[1
]}

机构：

[1] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[2] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

[4] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

来源：

PHYSICS LETTERS B | 2009年 / 673卷 / 03期

关键词：

CENTIMETER FLUCTUATIONS; COSMOLOGY; WMAP;

D O I：

10.1016/j.physletb.2009.02.021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Three-dimensional neutral hydrogen mapping using the redshifted 21 cm line has recently emerged as a promising cosmological probe. Within the framework of slow-roll reconstruction, we analyze how well the inflationary potential can be reconstructed by combining data from 21 cm experiments and cosmic microwave background data from the Planck satellite. We consider inflationary models classified according to the amplitude of their tensor component, and show that 21 cm measurements can significantly improve constraints on the slow-roll parameters and determine the shape of the inflationary potential. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：173 / 178

页数：6

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