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arXiv 1202.5178astro-ph.CO
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CMB透镜和巨环

CMB Lensing and Giant Rings

Ben Rathaus, Nissan Itzhaki

摘要:

我们研究了宇宙微波背景辐射中一个前惯性粒子(PIP)的引力透镜特征,假设它是最近在WMAP数据中发现的巨环异常的原因。模拟普朗克数据,我们发现,一般的CMB透镜信噪比与这样的PIP是相当小的,它将是困难的交叉关联的温度巨环与CMB透镜信号。然而,如果起始前的粒子也是从局部大尺度结构测量的整体流的原因,而局部大尺度结构恰好指向与巨环大致相同的方向,那么CMB透镜的信噪比是相当重要的。

英文摘要:

We study the CMB lensing signature of a pre-inationary particle (PIP), assuming it is responsible for the giant rings anomaly that was found recently in the WMAP data. Simulating Planck-like data we find that generically the CMB lensing signal to noise ratio associated with such a PIP is quite small and it would be difficult to cross correlate the temperature giant rings with the CMB lensing signal. However, if the pre-inationary particle is also responsible for the bulk flow measured from the local large scale structure, which happens to point roughly at the same direction as the giant rings, then the CMB lensing signal to noise ratio is fairly significant.

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