DESI 2024 V：来自星系与类星体的全形状星系成团
摘要
我们利用暗能量光谱仪（DESI 数据发布 1）第一年观测中超过 470 万个独立星系和类星体红移（范围在 ，划分为六个红移分箱，覆盖约 7,500 平方度天区），展示了星系两点成团的测量及其宇宙学影响。通过拟合完整功率谱，我们将先前的 DESI DR1 重子声学振荡（BAO）测量扩展至包含红移空间畸变和来自物质-辐射相等尺度的信号。这是首次在星表层级对全形状分析进行盲化以避免确认偏差，并且系统性误差在两点成团层级被纳入考量，从而自动传播至任何宇宙学参数中。在使用压缩的模型无关变量分析数据时，我们在红移空间畸变信号幅度上获得了 4.7% 的综合精度，仅凭一年的 DESI 数据就达到了与上一代巡天 20 年观测相近的精度。我们利用微扰理论分析数据以直接约束 CDM 模型内的宇宙学参数，并将此信息与重构的 DESI DR1 星系 BAO 相结合。使用基于大爆炸核合成对重子密度参数的高斯先验，以及对谱指数的高斯先验，我们约束物质密度为 ，哈勃常数 。此外，我们测得成团幅度 。DESI DR1 结果与基于广义相对论的 CDM 模型一致，其参数与 Planck 的结果相符。结合外部数据集对这些结果的宇宙学解释将在一篇姊妹论文中给出。
引用
@article{arxiv.2411.12021,
title = {DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars},
author = {A. G. Adame and J. Aguilar and S. Ahlen and S. Alam and D. M. Alexander and M. Alvarez and O. Alves and A. Anand and U. Andrade and E. Armengaud and S. Avila and A. Aviles and H. Awan and S. Bailey and C. Baltay and A. Bault and J. Behera and S. BenZvi and F. Beutler and D. Bianchi and C. Blake and R. Blum and S. Brieden and A. Brodzeller and D. Brooks and E. Buckley-Geer and E. Burtin and R. Calderon and R. Canning and A. Carnero Rosell and R. Cereskaite and J. L. Cervantes-Cota and S. Chabanier and E. Chaussidon and J. Chaves-Montero and S. Chen and X. Chen and T. Claybaugh and S. Cole and A. Cuceu and T. M. Davis and K. Dawson and A. de la Macorra and A. de Mattia and N. Deiosso and A. Dey and B. Dey and Z. Ding and P. Doel and J. Edelstein and S. Eftekharzadeh and D. J. Eisenstein and A. Elliott and P. Fagrelius and K. Fanning and S. Ferraro and J. Ereza and N. Findlay and B. Flaugher and A. Font-Ribera and D. Forero-Sánchez and J. E. Forero-Romero and C. Garcia-Quintero and L. H. Garrison and E. Gaztañaga and H. Gil-Marín and S. Gontcho A Gontcho and A. X. Gonzalez-Morales and V. Gonzalez-Perez and C. Gordon and D. Green and D. Gruen and R. Gsponer and G. Gutierrez and J. Guy and B. Hadzhiyska and C. Hahn and M. M. S Hanif and H. K. Herrera-Alcantar and K. Honscheid and C. Howlett and D. Huterer and V. Iršič and M. Ishak and S. Juneau and N. G. Karaçaylı and R. Kehoe and S. Kent and D. Kirkby and H. Kong and S. E. Koposov and A. Kremin and A. Krolewski and Y. Lai and T. -W. Lan and M. Landriau and D. Lang and J. Lasker and J. M. Le Goff and L. Le Guillou and A. Leauthaud and M. E. Levi and T. S. Li and K. Lodha and C. Magneville and M. Manera and D. Margala and P. Martini and M. Maus and P. McDonald and L. Medina-Varela and A. Meisner and J. Mena-Fernández and R. Miquel and J. Moon and S. Moore and J. Moustakas and E. Mueller and A. Muñoz-Gutiérrez and A. D. Myers and S. Nadathur and L. Napolitano and R. Neveux and J. A. Newman and N. M. Nguyen and J. Nie and G. Niz and H. E. Noriega and N. Padmanabhan and E. Paillas and N. Palanque-Delabrouille and J. Pan and S. Penmetsa and W. J. Percival and M. M. Pieri and M. Pinon and C. Poppett and A. Porredon and F. Prada and A. Pérez-Fernández and I. Pérez-Ràfols and D. Rabinowitz and A. Raichoor and C. Ramírez-Pérez and S. Ramirez-Solano and M. Rashkovetskyi and C. Ravoux and M. Rezaie and J. Rich and A. Rocher and C. Rockosi and F. Rodríguez-Martínez and N. A. Roe and A. Rosado-Marin and A. J. Ross and G. Rossi and R. Ruggeri and V. Ruhlmann-Kleider and L. Samushia and E. Sanchez and C. Saulder and E. F. Schlafly and D. Schlegel and M. Schubnell and H. Seo and R. Sharples and J. Silber and A. Slosar and A. Smith and D. Sprayberry and T. Tan and G. Tarlé and S. Trusov and R. Vaisakh and D. Valcin and F. Valdes and M. Vargas-Magaña and L. Verde and M. Walther and B. Wang and M. S. Wang and B. A. Weaver and N. Weaverdyck and R. H. Wechsler and D. H. Weinberg and M. White and M. J. Wilson and J. Yu and Y. Yu and S. Yuan and C. Yèche and E. A. Zaborowski and P. Zarrouk and H. Zhang and C. Zhao and R. Zhao and R. Zhou and H. Zou},
journal= {arXiv preprint arXiv:2411.12021},
year = {2025}
}
备注
This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers/). 90 pages, 26 figures. This version updates the published version in JCAP, correcting a typo when reporting the datavectors and matrices of Appendix A. Material for reproducing all figures available at https://zenodo.org/records/16992652