CMB limits on large-scale magnetic fields in an inhomogeneous universe

被引：19
|
作者：
Clarkson, CA [1 ]
Coley, AA
Maartens, R
Tsagas, CG
机构：
[1] Dalhousie Univ, Dept Math & Stat, Halifax, NS B3H 3J5, Canada
[2] Univ Cape Town, Dept Math & Appl Math, Relat & Cosmol Grp, ZA-7701 Cape Town, South Africa
[3] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2EG, Hants, England
来源：
CLASSICAL AND QUANTUM GRAVITY | 2003年 / 20卷 / 08期
关键词：
D O I：
10.1088/0264-9381/20/8/308
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We use the cosmic microwave background temperature anisotropy to place limits on large-scale magnetic fields is an inhomogeneous (perturbed Friedmann) universe. If no assumptions are made about the spacetime geometry, only a weak limit can be deduced directly from the CMB. In the special case where spatial inhomogeneity is neglected to first order, the upper limit is much stronger, i.e. a few x 10(-9) G.
引用
收藏
页码：1519 / 1528
页数：10
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