DESI-DR1 $3 \times 2$-pt 分析：弱引力透镜测量的一致性宇宙学
宇宙学与河外天体物理
2026-04-29 v3
摘要
我们呈现对暗能量光谱仪器数据发布第 1 版 (DESI-DR1) 中投影星系聚类观测与来自三大数据集的重叠弱引力引力透镜观测的联合宇宙学分析：开阔度级测绘 (KiDS-1000)、暗能量探测 (DES-Y3) 和 Hyper Suprime-Cam 测绘 (HSC-Y3)。该组合的大尺度结构探针允许我们测量一组 -pt 相关函数，打破单个可观测量在宇宙学拟合中的参数退化。我们获得的来自 DESI-DR1 与 DES-Y3 组合的 ，来自 KiDS-1000 的 ，来自 HSC-Y3 的 。这些参数确定值与普朗克宇宙微波背景数据集的拟合结果一致，尽管在 平面上略低 1.5-2 个σ。我们采用针对每个宇宙剪切测绘要求量身定制的统一管道进行分析，该管道自洅地确定宇宙学和天体物理参数。我们生成用于相关数据的分析协方差矩阵，包含所有探针之间的交叉协方差，并设计一种新的盲法程序以防止确认偏差，同时保持拟合优度统计量不变。本研究是 DESI-DR1 和弱引力透镜数据集联合宇宙学分析系列论文之一。
引用
@article{arxiv.2512.15960,
title = {DESI-DR1 $3 \times 2$-pt analysis: consistent cosmology across weak lensing surveys},
author = {A. Porredon and C. Blake and J. U. Lange and N. Emas and J. Aguilar and S. Ahlen and A. Bera and D. Bianchi and D. Brooks and F. J. Castander and T. Claybaugh and J. Coloma Nadal and A. Cuceu and K. S. Dawson and A. de la Macorra and Biprateep Dey and P. Doel and A. Elliott and S. Ferraro and A. Font-Ribera and J. E. Forero-Romero and C. Garcia-Quintero and E. Gaztañaga and S. Gontcho A Gontcho and G. Gutierrez and J. Guy and B. Hadzhiyska and H. K. Herrera-Alcantar and S. Heydenreich and K. Honscheid and C. Howlett and D. Huterer and M. Ishak and S. Joudaki and R. Joyce and D. Kirkby and A. Kremin and A. Krolewski and O. Lahav and C. Lamman and M. Landriau and L. Le Guillou and A. Leauthaud and M. E. Levi and M. Manera and A. Meisner and R. Miquel and S. Nadathur and J. A. Newman and G. Niz and N. Palanque-Delabrouille and W. J. Percival and C. Poppett and F. Prada and I. Pérez-Ràfols and A. Robertson and G. Rossi and R. Ruggeri and E. Sanchez and C. Saulder and D. Schlegel and M. Schubnell and A. Semenaite and H. Seo and J. Silber and A. Souki and D. Sprayberry and G. Tarlé and M. Vargas-Magaña and B. A. Weaver and C. Zhou and R. Zhou and H. Zou},
journal= {arXiv preprint arXiv:2512.15960},
year = {2026}
}
备注
21 pages, 15 figures; Published in the Open Journal of Astrophysics