利用 DES 三年期小尺度测量以宇宙剪切约束重子反馈
宇宙学与河外天体物理
2022-11-16 v1
摘要
我们利用暗能量巡天（DES）三年期宇宙剪切测量中的小尺度数据（该部分被排除在 DES 三年期宇宙学分析之外）来约束重子反馈。为建模重子反馈，我们采用重子修正模型，并使用数值包 \texttt{Baccoemu} 来加速重子非线性物质功率谱的求值。我们设计了分析流程，聚焦于重子抑制效应的约束，利用了主成分分析对 Fisher 预报所给的启示。我们对重子效应的约束随后可用于更好地建模并减轻重子的影响，从而从下一代大尺度结构巡天中产生宇宙学约束。我们以约 的显著性探测到宇宙剪切测量上的重子抑制。被重子反馈喷出一半气体的特征晕质量被约束为 （95% 置信水平）。最佳拟合的重子抑制在 处约为 ，在 处约为 。我们的结论对于宇宙学参数、重子模型细节以及内禀对齐的假设均是稳健的。
引用
@article{arxiv.2206.08591,
title = {Constraining the Baryonic Feedback with Cosmic Shear Using the DES Year-3 Small-Scale Measurements},
author = {A. Chen and G. Aricò and D. Huterer and R. Angulo and N. Weaverdyck and O. Friedrich and L. F. Secco and C. Hernández-Monteagudo and A. Alarcon and O. Alves and A. Amon and F. Andrade-Oliveira and E. Baxter and K. Bechtol and M. R. Becker and G. M. Bernstein and J. Blazek and A. Brandao-Souza and S. L. Bridle and H. Camacho and A. Campos and A. Carnero Rosell and M. Carrasco Kind and R. Cawthon and C. Chang and R. Chen and P. Chintalapati and A. Choi and J. Cordero and M. Crocce and M. E. S. Pereira and C. Davis and J. DeRose and E. Di Valentino and H. T. Diehl and S. Dodelson 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 X. Fang and A. Ferté and P. Fosalba and M. Gatti and E. Gaztanaga and G. Giannini and D. Gruen and R. A. Gruendl and I. Harrison and W. G. Hartley and K. Herner and K. Hoffmann and H. Huang and E. M. Huff and B. Jain and M. Jarvis and N. Jeffrey and T. Kacprzak and E. Krause and N. Kuropatkin and P. -F. Leget and P. Lemos and A. R. Liddle and N. MacCrann and J. McCullough and J. Muir and J. Myles and A. Navarro-Alsina and Y. Omori and S. Pandey and Y. Park and A. Porredon and J. Prat and M. Raveri and A. Refregier and R. P. Rollins and A. Roodman and R. Rosenfeld and A. J. Ross and E. S. Rykoff and S. Samuroff and C. Sánchez and J. Sanchez and I. Sevilla-Noarbe and E. Sheldon and T. Shin and A. Troja and M. A. Troxel and I. Tutusaus and T. N. Varga and R. H. Wechsler and B. Yanny and B. Yin and Y. Zhang and J. Zuntz and M. Aguena and J. Annis and D. Bacon and E. Bertin and S. Bocquet and D. Brooks and D. L. Burke and J. Carretero and C. Conselice and M. Costanzi and L. N. da Costa and J. De Vicente and S. Desai and P. Doel and I. Ferrero and B. Flaugher and J. Frieman and J. García-Bellido and D. W. Gerdes and T. Giannantonio and J. Gschwend and G. Gutierrez and S. R. Hinton and D. L. Hollowood and K. Honscheid and D. J. James and K. Kuehn and O. Lahav and M. March and J. L. Marshall and P. Melchior and F. Menanteau and R. Miquel and J. J. Mohr and R. Morgan and F. Paz-Chinchón and A. Pieres and E. Sanchez and M. Smith and E. Suchyta and M. E. C. Swanson and G. Tarle and D. Thomas and C. To},
journal= {arXiv preprint arXiv:2206.08591},
year = {2022}
}
备注
20 pages, 10 figures. DES Collaboration, Year-3 analysis