论文标题
Atacama宇宙学望远镜：CMB镜头质量地图超过2100平方度的天空及其与Boss-Crass Galaxies的互相关
The Atacama Cosmology Telescope: A CMB lensing mass map over 2100 square degrees of sky and its cross-correlation with BOSS-CMASS galaxies
论文作者
论文摘要
我们使用Atacama Cosmology TeleScope（ACT）的观测值（ACT）构建宇宙微波背景镜头图。这些地图涵盖了2100平方英尺的天空，并与各种光学调查重叠。这些图的信号在很大的尺度上占主导地位，并具有忠诚度，以使它们与宇宙红外背景的相关性清晰可见。我们还使用一种新颖的清洁程序去除了透镜图，并使用热清洁程序去除了镜头图，该过程仅略微降低了镜头信号 - 噪声比率。相对于Planck Best-Fit LCDM Cosmological模型，具有$ 10 $ - $σ$的意义，清洁镜头图和Boss CMASS Galaxy样品之间的跨光谱以$ 10 $ - $σ$的意义。我们的测量奠定了与当前ACT数据及以后的镜头互相关科学的基础。
We construct cosmic microwave background lensing mass maps using data from the 2014 and 2015 seasons of observations with the Atacama Cosmology Telescope (ACT). These maps cover 2100 square degrees of sky and overlap with a wide variety of optical surveys. The maps are signal dominated on large scales and have fidelity such that their correlation with the cosmic infrared background is clearly visible by eye. We also create lensing maps with thermal Sunyaev-Zel'dovich contamination removed using a novel cleaning procedure that only slightly degrades the lensing signal-to-noise ratio. The cross-spectrum between the cleaned lensing map and the BOSS CMASS galaxy sample is detected at $10$-$σ$ significance, with an amplitude of $A=1.02 \pm 0.10$ relative to the Planck best-fit LCDM cosmological model with fiducial linear galaxy bias. Our measurement lays the foundation for lensing cross-correlation science with current ACT data and beyond.
