The cross correlation of the ABS and ACT maps

The cross correlation of the ABS and ACT maps
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ABS 和 ACT 地图的互相关

DOI:
10.1088/1475-7516/2020/09/010
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发表时间:
2020
影响因子:
6.4
通讯作者:
Essinger-Hileman, Thomas
Essinger-Hileman, Thomas
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Li, Zack;Naess, Sigurd;Aiola, Simone;Alonso, David;Appel, John W.;Bond, J. Richard;Calabrese, Erminia;Choi, Steve K.;Crowley, Kevin T.;Essinger-Hileman, Thomas

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在CMB研究中,系统误差的最重要检查之一是独立实验绘制的图像的互相关。在本文中,我们报告的交叉相关的地图从阿塔卡马B模式搜索(ABS)和阿塔卡马宇宙望远镜(ACT)的实验在温度和偏振。这些完全不同的测量结果彼此之间有明显的相关性,并且与普朗克卫星在EE和TE光谱中的EE和TE光谱在大约0110 deg 2的范围内都有明显的相关性。TB、EB和BB交叉谱与噪声一致。利用这种互相关对于未来在智利进行的旨在探测30<100 <8,000范围的实验非常重要。
One of the most important checks for systematic errors in CMB studies is the cross correlation of maps made by independent experiments. In this paper we report on the cross correlation between maps from the Atacama B-mode Search (ABS) and Atacama Cosmology Telescope (ACT) experiments in both temperature and polarization. These completely different measurements have a clear correlation with each other and with the Planck satellite in both the EE and TE spectra at ℓ< 400 over the roughly 0110 deg 2 common to all three. The TB, EB, and BB cross spectra are consistent with noise. Exploiting such cross-correlations will be important for future experiments operating in Chile that aim to probe the 30< ℓ< 8,000 range.
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