The axis of evil revisited

被引：114

作者：

Land, Kate

Magueijo, Joao

机构：

[1] Univ Oxford, Oxford OX1 3RH, England

[2] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada

[3] Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada

[4] Imperial Coll, Theoret Phys Grp, London SW7 2BZ, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 378卷 / 01期

关键词：

cosmic microwave background;

D O I：

10.1111/j.1365-2966.2007.11749.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In light of the three-year data release from the Wilkinson Microwave Anisotropy Probe, we re-examine the evidence for the 'Axis of Evil' (AoE). We discover that previous statistics are not robust with respect to the data sets available and different treatments of the Galactic plane. We identify the cause of the instability and implement an alternative 'model selection' approach. A comparison to Gaussian isotropic simulations finds the features significant at the 94-98 per cent level, depending on the particular AoE model. The Bayesian evidence finds lower significance, ranging from 'substantial' at Delta(ln E) similar to 1.4 to no vidence for the most general AoE model.

引用

收藏

页码：153 / 158

页数：6

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