暗能量巡天第三年结果：来自星系成团与弱引力透镜的宇宙学约束
宇宙学与河外天体物理
2022-03-22 v3
摘要
我们展示了暗能量巡天（DES）大尺度结构的第一批宇宙学结果，覆盖 5000 deg。我们执行了一项结合三个两点关联函数（32pt）的分析：(i) 使用 1 亿源星系的宇宙剪切，(ii) 星系成团，以及 (iii) 源星系剪切与透镜星系位置的互相关。该分析旨在减轻确认偏倚或观测者偏倚；我们描述了在结果揭盲后对透镜星系样本所做的具体更改。我们在平坦 CDM 和 CDM 宇宙学模型内对数据建模。我们发现三个两点关联函数之间的宇宙学结果一致；它们的组合在 CDM 中给出成团振幅 和物质密度 （均值带 68% 置信限）；在 CDM 中给出 、 和暗能量状态方程参数 。这一 DES 数据组合与 Planck 2018 宇宙微波背景（CMB）原初各向异性数据所偏好的模型预测一致，其超出概率 至 。当将 DES 32pt 数据与可用的重子声学振荡、红移空间畸变和 Ia 型超新星数据结合时，我们发现 。将所有这些数据集与 Planck CMB 透镜结合，在 CDM 中得到联合参数约束 、、 和 ；在 CDM 中得到 、、 和 。（节略）
引用
@article{arxiv.2105.13549,
title = {Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing},
author = {DES Collaboration and T. M. C. Abbott and M. Aguena and A. Alarcon and S. Allam and O. Alves and A. Amon and F. Andrade-Oliveira and J. Annis and S. Avila and D. Bacon and E. Baxter and K. Bechtol and M. R. Becker and G. M. Bernstein and S. Bhargava and S. Birrer and J. Blazek and A. Brandao-Souza and S. L. Bridle and D. Brooks and E. Buckley-Geer and D. L. Burke and H. Camacho and A. Campos and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and R. Cawthon and C. Chang and A. Chen and R. Chen and A. Choi and C. Conselice and J. Cordero and M. Costanzi and M. Crocce and L. N. da Costa and M. E. da Silva Pereira and C. Davis and T. M. Davis and J. De Vicente and J. DeRose and S. Desai and E. Di Valentino and H. T. Diehl and J. P. Dietrich and S. Dodelson and P. Doel and C. Doux and A. Drlica-Wagner and K. Eckert and T. F. Eifler and F. Elsner and J. Elvin-Poole and S. Everett and A. E. Evrard and X. Fang and A. Farahi and E. Fernandez and I. Ferrero and A. Ferté and P. Fosalba and O. Friedrich and J. Frieman and J. García-Bellido and M. Gatti and E. Gaztanaga and D. W. Gerdes and T. Giannantonio and G. Giannini and D. Gruen and R. A. Gruendl and J. Gschwend and G. Gutierrez and I. Harrison and W. G. Hartley and K. Herner and S. R. Hinton and D. L. Hollowood and K. Honscheid and B. Hoyle and E. M. Huff and D. Huterer and B. Jain and D. J. James and M. Jarvis and N. Jeffrey and T. Jeltema and A. Kovacs and E. Krause and R. Kron and K. Kuehn and N. Kuropatkin and O. Lahav and P. -F. Leget and P. Lemos and A. R. Liddle and C. Lidman and M. Lima and H. Lin and N. MacCrann and M. A. G. Maia and J. L. Marshall and P. Martini and J. McCullough and P. Melchior and J. Mena-Fernández and F. Menanteau and R. Miquel and J. J. Mohr and R. Morgan and J. Muir and J. Myles and S. Nadathur and A. Navarro-Alsina and R. C. Nichol and R. L. C. Ogando and Y. Omori and A. Palmese and S. Pandey and Y. Park and F. Paz-Chinchón and D. Petravick and A. Pieres and A. A. Plazas Malagón and A. Porredon and J. Prat and M. Raveri and M. Rodriguez-Monroy and R. P. Rollins and A. K. Romer and A. Roodman and R. Rosenfeld and A. J. Ross and E. S. Rykoff and S. Samuroff and C. Sánchez and E. Sanchez and J. Sanchez and D. Sanchez Cid and V. Scarpine and M. Schubnell and D. Scolnic and L. F. Secco and S. Serrano and I. Sevilla-Noarbe and E. Sheldon and T. Shin and M. Smith and M. Soares-Santos and E. Suchyta and M. E. C. Swanson and M. Tabbutt and G. Tarle and D. Thomas and C. To and A. Troja and M. A. Troxel and D. L. Tucker and I. Tutusaus and T. N. Varga and A. R. Walker and N. Weaverdyck and R. Wechsler and J. Weller and B. Yanny and B. Yin and Y. Zhang and J. Zuntz},
journal= {arXiv preprint arXiv:2105.13549},
year = {2022}
}
备注
See https://www.darkenergysurvey.org/des-year-3-cosmology-results-papers/ for the full DES Y3 3x2pt cosmology release. Matches version accepted in PRD