论文标题
Subaru超级胶卷星系弱透镜与Planck Cosmic微波背景镜头之间的互相关
Cross-correlation between Subaru Hyper Suprime-Cam Galaxy Weak Lensing and Planck Cosmic Microwave Background Lensing
论文作者
论文摘要
星系弱透镜（WL）和宇宙微波背景（CMB）镜头之间的互相关是探测中间红移处探测物质波动并检测两种探针中残留系统的强大工具。在本文中，我们研究了HSC源星系释放的HSC源星系0.3 <z <z <1.5，研究了超级智能Subaru战略计划（HSC）的首次数据发布和CMB镜头的Galaxy WL的互相关。 HSC是最深的III阶段Galaxy WL调查，既提供了研究高红移宇宙的绝佳机会，也提供了与其异常高的源密度相关的新挑战，例如源混合。互相关信号的显着性水平为3.1 $σ$。我们关于最佳拟合2018 Planck Cosmology的最佳拟合模型的幅度为$ a = 0.81 \ pm 0.25 $，与$ a = 1 $一致。我们的结果也与使用不同调查的先前CMB镜头和Galaxy WL互相关研究一致。我们对WL $ b $ - 摩德，点传播功能，光度降移误差和热Sunyaev-Zel'dovich泄漏进行测试，并且找不到残留系统学的显着证据。
Cross-correlations between galaxy weak lensing (WL) and Cosmic Microwave Background (CMB) lensing are a powerful tool to probe matter fluctuations at intermediate redshifts and to detect residual systematics in either probe. In this paper, we study the cross-correlation of galaxy WL from the Hyper Suprime-Cam Subaru Strategic Program (HSC) first data release and CMB lensing from the final Planck data release, for HSC source galaxies at 0.3< z < 1.5. HSC is the deepest Stage-III galaxy WL survey, and provides both a great opportunity to study the high-redshift universe and new challenges related to its exceptionally high source density, such as source blending. The cross-correlation signal is measured at a significance level of 3.1$σ$. The amplitude of our best-fit model with respect to the best-fit 2018 Planck cosmology is $A = 0.81\pm 0.25$, consistent with $A=1$. Our result is also consistent with previous CMB lensing and galaxy WL cross-correlation studies using different surveys. We perform tests with respect to the WL $B$-modes, the point-spread-function, photometric redshift errors, and thermal Sunyaev-Zel'dovich leakage, and find no significant evidence of residual systematics.
