暗能量巡天第六年结果：弱引力透镜与星系成团宇宙学分析框架
宇宙学与河外天体物理
2026-01-22 v1
摘要
我们介绍了 Dark Energy Survey (DES) 第六年数据集的弱引力透镜与星系成团分析方法。在本工作中，我们设计并验证了用于宇宙剪切、星系成团加星系星系透镜（pt）以及 pt 联合分析的分析流水线。我们的框架考虑了关键的理论不确定性，如重子反馈和星系偏差，并结合了线性和非线性模型。在理论建模变得不可靠的区间内我们应用了尺度截断。使用模拟数据和模拟验证了流水线的稳健性，证实了无偏的宇宙学约束，并突出了验证过程中后验投影效应的重要性。最终，我们交付了在 CDM 和 CDM 情景下用于宇宙剪切、pt 和 pt 的稳健且经过验证的分析流水线，包括适用于真实数据分析的明确定义的尺度集合、理论系统性的稳健处理方案以及信号的理论协方差。这一综合方法也为未来的星系巡天（如 Vera C. Rubin Observatory Legacy Survey of Space and Time）奠定了基础。
引用
@article{arxiv.2601.14859,
title = {Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework},
author = {D. Sanchez-Cid and A. Ferté and J. Blazek and S. Samuroff and A. Amon and F. Andrade-Oliveira and J. M. Coloma-Nadal and J. Muir and A. Porredon and J. Prat and N. Weaverdyck and M. Yamamoto and D. Anbajagane and M. R. Becker and P. Carrilho and C. Chang and M. Crocce and G. Giannini and W. d'Assignies and J. DeRose and S. Dodelson and E. Krause and E. Legnani and J. Mena-Fernández and N. MacCrann and A. Pourtsidou and C. Preston and P. Rogozenski and M. Rodriguez-Monroy and R. Rosenfeld and E. Sanchez and I. Sevilla-Noarbe and M. Soares-Santos and C. To and M. A. Troxel and M. Tsedrik and B. Yin and J. Zuntz and T. M. C. Abbott and M. Aguena and S. Allam and O. Alves and S. Avila and D. Bacon and K. Bechtol and E. Bertin and S. Bocquet and D. Brooks and H. Camacho and R. Camilleri and A. Campos and A. Carnero Rosell and J. Carretero and F. J. Castander and R. Cawthon and A. Choi and L. N. da Costa and M. E. da Silva Pereira and T. M. Davis and J. De Vicente and S. Desai and C. Doux and A. Drlica-Wagner and T. Eifler and J. Elvin-Poole and S. Everett and A. E. Evrard and B. Flaugher and P. Fosalba and J. Frieman and J. García-Bellido and M. Gatti and E. Gaztanaga and P. Giles and K. Glazebrook and D. Gruen and G. Gutierrez and I. Harrison and K. Herner and S. R. Hinton and D. L. Hollowood and K. Honscheid and D. Huterer and B. Jain and D. J. James and N. Jeffrey and T. Kacprzak and K. Kuehn and O. Lahav and S. Lee and J. L. Marshall and F. Menanteau and R. Miquel and J. J. Mohr and J. Myles and R. C. Nichol and R. L. C. Ogando and A. Palmese and M. Paterno and W. J. Percival and A. A. Plazas Malagón and M. Raveri and A. Roodman and C. Sánchez and T. Schutt and E. Sheldon and N. Sherman and T. Shin and M. Smith and E. Suchyta and M. E. C. Swanson and M. Tabbutt and G. Tarle and D. Thomas and D. L. Tucker and V. Vikram and A. R. Walker and B. Yanny},
journal= {arXiv preprint arXiv:2601.14859},
year = {2026}
}
备注
36 pages, 22 figures