MB lensing tomography, or the cross-correlation between CMB lensing maps and large-scale structure tracers over a well-defined redshift range, has the potential to map the amplitude and growth of structure over cosmic time, provide some of the most stringent tests of gravity, and break important degeneracies between cosmological parameters. In this work, we use the unWISE galaxy catalog to provide three samples at median redshifts $z \sim 0.6, 1.1$ and 1.5, fully spanning the Dark Energy dominated era, together with the most recent Planck CMB lensing maps. We obtain a combined cross-correlation significance $S/N = 79.3$ over the range of scales $100 < \ell < 1000$. We measure the redshift distribution of unWISE sources by a combination of cross-matching with the COSMOS photometric catalog and cross-correlation with BOSS galaxies and quasars and eBOSS quasars. We also show that magnification bias must be included in our analysis and perform a number of null tests. In a companion paper, we explore the derived cosmological parameters by modeling the non-linearities and propagating the redshift distribution uncertainties.

中文翻译：

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普朗克 CMB 透镜的 unWISE 断层扫描

MB 透镜断层扫描，或 CMB 透镜图和大尺度结构示踪剂在明确定义的红移范围内的互相关，有可能在宇宙时间内绘制结构的振幅和增长，提供一些最严格的测试引力，并打破宇宙学参数之间的重要简并。在这项工作中，我们使用 unWISE 星系目录提供三个样本，中值红移 $z\sim 0.6、1.1$ 和 1.5，完全跨越暗能量主导时代，以及最新的普朗克 CMB 透镜图。我们在 $100 < \ell < 1000$ 的范围内获得了组合互相关显着性 $S/N = 79.3$。我们通过与 COSMOS 光度目录的交叉匹配以及与 BOSS 星系和类星体以及 eBOSS 类星体的互相关来测量 unWISE 源的红移分布。我们还表明，放大偏差必须包含在我们的分析中，并进行一些零测试。在一篇配套论文中，我们通过对非线性建模和传播红移分布不确定性来探索导出的宇宙学参数。