A counterexample to claimed COBE constraints on compact toroidal universe models

被引:16
作者
Roukema, BF [1 ]
机构
[1] Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India
关键词
D O I
10.1088/0264-9381/17/19/301
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
It has been suggested that if the Universe satisfies a flat, multiply connected, perturbed Friedmann-Lemaitre model, then cosmic microwave background data from the COBE satellite implies that the minimum size of the injectivity diameter (shortest closed spatial geodesic) must be larger than about a of the horizon diameter. To show that this claim is misleading, a simple T-2 X R universe model of injectivity diameter a quarter of this size, i.e. a tenth of the horizon diameter, is shown to be consistent with COBE four-year observational maps of the cosmic microwave background. This is done using the identified circles principle.
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页码:3951 / 3963
页数:13
相关论文
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