Joint analysis of Dark Energy Survey Year 3 data and CMB lensing from SPT and Planck . III. Combined cosmological constraints
Joint analysis of Dark Energy Survey Year 3 data and CMB lensing from SPT and Planck . III. Combined cosmological constraints
复制标题
对暗能量调查第 3 年数据以及 SPT 和普朗克的 CMB 透镜的联合分析。
DOI：
10.1103/physrevd.107.023531
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发表时间：
2023
影响因子：
5
通讯作者：
Bacon, D.
中科院分区：
文献类型：
--
作者：
Abbott, T. M. C.;Aguena, M.;Alarcon, A.;Alves, O.;Amon, A.;Andrade-Oliveira, F.;Annis, J.;Ansarinejad, B.;Avila, S.;Bacon, D.
我们通过分析暗能量调查（DES）第3年数据中测量的星系位置和星系透镜之间的两点相关函数，以及南极望远镜（SPT）和普朗克望远镜（planck）测量的宇宙微波背景（CMB）透镜，提出了宇宙学约束。当我们联合分析DES-only两点函数和DES与cmb透镜的相互关系时，我们发现，假设。当与CMB透镜自谱测量结果结合时，我们发现。CMB透镜相互关联的高信噪比使得对这些结果进行了几次强有力的一致性测试，包括与仅来自相互关联的约束的比较，以及旨在测试DES星系透镜和聚类测量的稳健性的比较。我们没有发现仅des分析或与CMB透镜相互关联的联合分析在基线宇宙学约束中存在显著偏差的证据。然而，CMB透镜相互关联表明，使用替代透镜星系样本（特别是神奇星系和高红移星系）进行相关函数测量可能存在问题，这与先前的研究结果一致。我们使用CMB透镜相互关系来确定进一步研究这些问题的方向。
We present cosmological constraints from the analysis of two-point correlation functions between galaxy positions and galaxy lensing measured in Dark Energy Survey (DES) Year 3 data and measurements of cosmic microwave background (CMB) lensing from the South Pole Telescope (SPT) andPlanck. When jointly analyzing the DES-only two-point functions and the DES cross-correlations withCMB lensing, we findand, assuming. When additionally combining with measurements of the CMB lensing autospectrum, we findand. The high signal-to-noise of the CMB lensing cross-correlations enables several powerful consistency tests of these results, including comparisons with constraints derived from cross-correlations only, and comparisons designed to test the robustness of the galaxy lensing and clustering measurements from DES. Applying these tests to our measurements, we find no evidence of significant biases in the baseline cosmological constraints from the DES-only analyses or from the joint analyses with CMB lensing cross-correlations. However, the CMB lensing cross-correlations suggest possible problems with the correlation function measurements using alternative lens galaxy samples, in particular theredmagicgalaxies and high-redshiftmaglimgalaxies, consistent with the findings of previous studies. We use the CMB lensing cross-correlations to identify directions for further investigating these problems.