Ionization from cosmic strings at cosmic dawn

被引：5
|
作者：
Laliberte, Samuel [1 ]
Brandenberger, Robert [1 ,2 ]
机构：
[1] McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada
[2] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland
来源：
PHYSICAL REVIEW D | 2020年 / 101卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
TOPOLOGICAL DEFECTS; RADIATION; EVOLUTION; FLUX;
D O I：
10.1103/PhysRevD.101.023528
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cosmic strings produce charged particles which, by emitting electromagnetic radiation, partially ionize neutral hydrogen during the dark ages. Corrections to the ionization fraction of neutral hydrogen induced by cosmic strings lead to new constraints on the string tension around G mu similar to 10(-16)-10(-20) for values of the primordial magnetic field greater than B-0 similar to 10(-11) G.
引用
收藏
页数：8
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