Cross-correlation of Dark Energy Survey Year 3 lensing data with ACT and Planck thermal Sunyaev-Zel’dovich effect observations. II. Modeling and constraints on halo pressure profiles
Cross-correlation of Dark Energy Survey Year 3 lensing data with ACT and Planck thermal Sunyaev-Zel’dovich effect observations. II. Modeling and constraints on halo pressure profiles
复制标题
暗能量调查第 3 年透镜数据与 ACT 和普朗克热 Sunyaev-Zelâdovich 效应观测结果的互相关。
DOI：
10.1103/physrevd.105.123526
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发表时间：
2022
影响因子：
5
通讯作者：
Huang, H.
中科院分区：
文献类型：
--
作者：
Pandey, S.;Gatti, M.;Baxter, E.;Hill, J. C.;Fang, X.;Doux, C.;Giannini, G.;Raveri, M.;DeRose, J.;Huang, H.
热的电离气体通过热Sunyaev-Zel'dovich（tSZ）效应在宇宙微波背景上留下印记。引力透镜效应（追踪投射的质量）与tSZ效应（追踪投射的气压）的互相关是整个宇宙中电离重子热状态的有力探测器，并且对重子反馈等效应敏感。在一篇配套论文（Gattiet al.Phys. Rev. D 105，123525（2022）PRVDAQ 2470 -0010）中，我们介绍了暗能量巡天前三年观测的星系剪切测量值与阿塔卡马宇宙学望远镜和普朗克观测组合的tSZ测量值之间的互相关的层析测量和验证测试。在这项工作中，我们使用相同的测量来约束模型的压力分布的晕在很宽的范围内的晕质量和红移。我们发现的证据表明，在低质量的晕减少压力，从活跃的银河系核反馈的影响与预测一致。当采用普朗克偏好的宇宙学参数时，我们从我们的测量中推断出流体静力学质量偏差（）。我们还发现，我们的测量是一致的非零红移的演变，正确的符号和足够的幅度来解释的质量偏差，必要的协调与普朗克首选的宇宙学集群计数测量。我们的分析介绍了一个模型的影响，内在的路线（IA）的星系形状的剪切-tSZ相关。我们表明，IA可以有显着的影响，这些相关性在当前的噪声水平。
Hot, ionized gas leaves an imprint on the cosmic microwave background via the thermal Sunyaev-Zel’dovich (tSZ) effect. The cross-correlation of gravitational lensing (which traces the projected mass) with the tSZ effect (which traces the projected gas pressure) is a powerful probe of the thermal state of ionized baryons throughout the Universe and is sensitive to effects such as baryonic feedback. In a companion paper (Gattiet al.Phys. Rev. D 105, 123525 (2022)PRVDAQ2470-0010), we present tomographic measurements and validation tests of the cross-correlation between Galaxy shear measurements from the first three years of observations of the Dark Energy Survey and tSZ measurements from a combination of Atacama Cosmology Telescope andPlanckobservations. In this work, we use the same measurements to constrain models for the pressure profiles of halos across a wide range of halo mass and redshift. We find evidence for reduced pressure in low-mass halos, consistent with predictions for the effects of feedback from active Galactic nuclei. We infer the hydrostatic mass bias () from our measurements, findingwhen adopting thePlanck-preferred cosmological parameters. We additionally find that our measurements are consistent with a nonzero redshift evolution of, with the correct sign and sufficient magnitude to explain the mass bias necessary to reconcile cluster count measurements with thePlanck-preferred cosmology. Our analysis introduces a model for the impact of intrinsic alignments (IAs) of galaxy shapes on the shear-tSZ correlation. We show that IA can have a significant impact on these correlations at current noise levels.