Extending the WMAP bound on the size of the Universe

被引：62

作者：

Key, Joey Shapiro ^{[1
]}

Cornish, Neil J.

Spergel, David N.

Starkman, Glenn D.

机构：

[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[2] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[3] Case Western Reserve Univ, Dept Phys, Ctr Educ & Res Cosmol & Astrophys, Cleveland, OH 44106 USA

[4] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.75.084034

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The topology of the Universe can leave an imprint on the cosmic microwave background (CMB) radiation. Clues to the shape of our Universe can be found by searching the CMB for matching circles of temperature patterns. A full sky search of the CMB, mapped extremely accurately by NASA's WMAP satellite, returned no detection of such matching circles and placed a lower bound on the size of the Universe at 24 Gpc. This lower bound can be extended by optimally filtering the WMAP power spectrum. More stringent bounds can be placed on specific candidate topologies by using a combination statistic. We use optimal filtering and the combination statistic to rule out the suggestion that we live in a Poincare dodecahedral space.

引用

页数：10

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