利用 Sunyaev-Zeldovich 效应交叉相关限制天体物理反馈的红移演化
宇宙学与河外天体物理
2019-09-25 v1
摘要
理解天体物理反馈对于限制星系形成模型以及从当前与未来弱引力透镜巡天中提取宇宙学信息十分重要。由 Compton- 参数量化的热 Sunyaev-Zel'dovich 效应是研究反馈的有力工具，因为它直接探测位于暗物质晕中炽热电离气体的压强。星系与从宇宙微波背景巡天获得的 Compton- 图之间的交叉相关对气体压强的红移演化及其对晕质量的依赖敏感。本工作中，我们使用暗能量巡天第一年数据中确认的星系以及由 Planck 观测构建的 Compton- 图。我们在多个红移箱中发现了高度显著（约 ）的星系- 交叉相关探测。通过联合拟合这些测量以及星系成团性测量，我们限制了宇宙在 间作为红移函数的晕偏置加权气体压强。我们将这些测量与流体动力学模拟的预测比较，从而能够限制晕气体中相对于引力坍缩所产生的热能数量。
引用
@article{arxiv.1904.13347,
title = {Constraints on the redshift evolution of astrophysical feedback with Sunyaev-Zeldovich effect cross-correlations},
author = {S. Pandey and E. J. Baxter and Z. Xu and J. Orlowski-Scherer and N. Zhu and A. Lidz and J. Aguirre and J. DeRose and M. Devlin and J. C. Hill and B. Jain and R. K. Sheth and S. Avila and E. Bertin and D. Brooks and E. Buckley-Geer and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and R. Cawthon and L. N. da Costa and J. De Vicente and S. Desai and H. T. Diehl and J. P. Dietrich and P. Doel and A. E. Evrard and B. Flaugher and P. Fosalba and J. Frieman and J. García-Bellido and D. W. Gerdes and T. Giannantonio and R. A. Gruendl and J. Gschwend and W. G. Hartley and D. L. Hollowood and D. J. James and E. Krause and K. Kuehn and N. Kuropatkin and M. A. G. Maia and J. L. Marshall and P. Melchior and F. Menanteau and R. Miquel and A. A. Plazas and A. Roodman and E. Sanchez and S. Serrano and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and F. Sobreira and E. Suchyta and M. E. C. Swanson and G. Tarle and R. H. Wechsler},
journal= {arXiv preprint arXiv:1904.13347},
year = {2019}
}
备注
21 pages, 12 figures, comments welcome