Constraining anisotropic models of the early Universe with WMAP9 data
Constraining anisotropic models of the early Universe with WMAP9 data
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DOI：
10.1103/physrevd.89.043517
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发表时间：
2013-11
影响因子：
5
通讯作者：
S. Ramazanov;G. Rubtsov
中科院分区：
文献类型：
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作者：
S. Ramazanov;G. Rubtsov
我们约束几个模型的早期宇宙，预测宇宙微波背景（CMB）天空的统计各向异性。我们利用WMAP 9地图与光束不对称性去卷积。与以前发布的WMAP数据相比，它们没有表现出统计各向异性的巨大四极矩。这使我们能够加强对早期文献中建立的模型参数的限制。特别地，特殊四极的幅度被约束为：
We constrain several models of the early Universe that predict a statistical anisotropy of the cosmic microwave background (CMB) sky. We make use of WMAP9 maps deconvolved with beam asymmetries. As compared to previous releases of WMAP data, they do not exhibit the anomalously large quadrupole of statistical anisotropy. This allows us to strengthen the limits on the parameters of models established earlier in the literature. In particular, the amplitude of the special quadrupole is constrained as