DESI 2024 重子声学振荡的最优重构
宇宙学与河外天体物理
2025-04-14 v3
摘要
重子声学振荡（BAO）提供了一个稳健的标准尺，可通过星系成团性测量宇宙的膨胀历史。密度场重构是目前广泛采用的提高 BAO 探测精度和准确性的程序。为了寻找 DESI 2024 星系 BAO 分析中使用的最优重构设置，我们在 DESI 第一年观测（DR1）的盲测数据以及模拟 DESI DR1 目标样本预期成团和选择性质的 mock 上进行了测试，评估了重构后 BAO 约束对分析配置不同选择的敏感性。总体而言，我们发现 BAO 约束在重构过程的多个方面均保持稳健，包括平滑尺度的选择、红移空间畸变的处理、光纤分配的不完备性以及 BAO 模型的参数化。我们还展示了 DESI 在大尺度结构星表揭盲之前所进行的一系列测试，以评估端到端星系 BAO 管线的成熟度。
引用
@article{arxiv.2404.03005,
title = {Optimal Reconstruction of Baryon Acoustic Oscillations for DESI 2024},
author = {E. Paillas and Z. Ding and X. Chen and H. Seo and N. Padmanabhan and A. de Mattia and A. J. Ross and S. Nadathur and C. Howlett and J. Aguilar and S. Ahlen and O. Alves and U. Andrade and D. Brooks and E. Buckley-Geer and E. Burtin and S. Chen and T. Claybaugh and S. Cole and K. Dawson and A. de la Macorra and Arjun Dey and P. Doel and K. Fanning and S. Ferraro and J. E. Forero-Romero and C. Garcia-Quintero and E. Gaztañaga and H. Gil-Marín and S. Gontcho A Gontcho and G. Gutierrez and C. Hahn and M. M. S Hanif and K. Honscheid and M. Ishak and R. Kehoe and A. Kremin and M. Landriau and L. Le Guillou and M. E. Levi and M. Manera and P. Martini and L. Medina-Varela and A. Meisner and J. Mena-Fernández and R. Miquel and J. Moustakas and E. Mueller and A. Muñoz-Gutiérrez and A. D. Myers and J. A. Newman and J. Nie and G. Niz and N. Palanque-Delabrouille and W. J. Percival and C. Poppett and F. Prada and A. Pérez-Fernández and M. Rashkovetskyi and M. Rezaie and A. Rosado-Marin and G. Rossi and R. Ruggeri and E. Sanchez and C. Saulder and E. F. Schlafly and D. Schlegel and M. Schubnell and D. Sprayberry and G. Tarlé and D. Valcin and M. Vargas-Magaña and J. Yu and S. Yuan and R. Zhou and H. Zou},
journal= {arXiv preprint arXiv:2404.03005},
year = {2025}
}
备注
Supporting publication of DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars