Early reionization by cosmic strings reexamined

被引：17

作者：

Pogosian, L ^{[1
]}

Vilenkin, A ^{[1
]}

机构：

[1] Tufts Univ, Dept Phys & Astron, Inst Cosmol, Medford, MA 02155 USA

来源：

PHYSICAL REVIEW D | 2004年 / 70卷 / 06期

关键词：

D O I：

10.1103/PhysRevD.70.063523

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Measurements of the Cosmic Microwave Background (CMB) temperature anisotropy and the temperature-polarization cross correlation by Wilkinson Microwave Anistropy Probe (WMAP) suggest a reionization redshift of zsimilar to17+/-5. On the other hand, observations of high redshift galaxies indicate a presence of a significant fraction of neutral hydrogen at redshift zsimilar to6-7. We show that cosmic strings with tensions well within, but not far from, current observation bounds could cause early star formation at a level sufficient to explain the high reionization redshift.

引用

页码：063523 / 1

页数：6

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