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Excessive Shift of the CMB Acoustic Peaks of the Cold Spot Area

机译:热点地区CMB声学峰的过度偏移

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Measurement of the acoustic peaks of the cosmic microwave background (CMB) temperature anisotropies has been instrumental in deciding the geometry and content of the universe. Acoustic peak positions vary in different parts of the sky owing to statistical fluctuation. We present the statistics of the peak positions of small patches from ESA Planck data. We found that the peak positions have significantly high variance compared to the 100 CMB simulations with the best-fit ΛCDM model with lensing and Doppler boosting effects included. Examining individual patches, we found that the one containing the mysterious "Cold Spot," an area near the Eridanus constellation where the temperature is significantly lower than Gaussian theory predicts, displays large synchronous shifts of peak positions toward smaller multipole numbers with significance lower than 1.11?×?10?4. The combination of large synchronous shifts in acoustic peaks and lower-than-usual temperature at the Cold Spot area results in a 4.73σ detection (significance p = 1.11 × 10?6) against the ΛCDM model. And it was already reported in Finelli et al. that in the WISE-2MASS galaxy catalog at z.
机译:宇宙微波背景(CMB)温度各向异性的声峰的测量有助于确定宇宙的几何形状和含量。由于统计波动,天空的不同部分的声峰位置会有所不同。我们提供了来自ESA普朗克数据的小补丁峰值位置的统计信息。我们发现,与包括最合适的ΛCDM模型(包括透镜和多普勒增强效果)的100 CMB仿真相比,峰位置具有显着高的方差。检查单个补丁,我们发现一个包含神秘的“冷点”的斑点显示出峰位置向较小的多极数的大同步移动,该显着性低于1.11,该区域的温度显着低于高斯理论的预测。 ×××10×4。相对于ΛCDM模型,声学峰的大同步位移和冷点区域的温度低于正常水平的结合导致了4.73σ的检测(重要性p = 1.11×10?6)。 Finelli等人已经对此进行了报道。 WISE-2MASS星系目录中位于z的位置。

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