The SRG/eROSITA All-Sky Survey: Tracing the Large-Scale Structure with a clustering study of galaxy clusters
R. Seppi, J. Comparat, V. Ghirardini, C. Garrel, E. Artis, A. G. Sanchez, A. Liu, N. Clerc, E. Bulbul, S. Grandis, M. Kluge, T. H. Reiprich, A. Merloni, X. Zhan… 展开作者
R. Seppi, J. Comparat, V. Ghirardini, C. Garrel, E. Artis, A. G. Sanchez, A. Liu, N. Clerc, E. Bulbul, S. Grandis, M. Kluge, T. H. Reiprich, A. Merloni, X. Zhang, Y. E. Bahar, S. Shreeram, J. Sanders, M. Ramos-Ceja, M. Krumpe
本文利用 eRASS1 星系团样本,首次通过 HOD 与 HAM 模型联合拟合聚类和宇宙学参数,揭示了不同光度星系团的晕占据与偏袒特征,并约束了冷暗物质密度。
摘要:
星系团的空间分布为宇宙中大尺度物质分布提供了可靠的示踪。聚类信号取决于星系团的内禀性质与宇宙学参数。搭载于 Spectrum-Roentgen-Gamma(SRG)上的 eROSITA 发现星系团的能力,使得探测延展 X 射线辐射与暗物质晕之间的关联成为可能。我们的目标是测量投影两点相关函数,以研究第一次 eROSITA 全天巡天(eRASS1)探测到的星系团和星系群对暗物质晕的占据情况。我们构建了五个体积受限样本,探测具有不同红移和 X 射线光度的星系团。我们利用晕占据分布(HOD)模型和晕丰度匹配(HAM)模型解释相关函数。我们同时拟合了一个包含 6493 个星系团、纯度大于 96% 的流量受限样本的宇宙学参数和晕偏袒。结果:我们获得了 eRASS1 星系团晕占据的详细图像。低红移处的较暗群体(S0:LX = 4.63E43 erg/s,0.1 < z < 0.2)相对于暗物质的偏袒最小,b = 2.95 ± 0.21。延伸到较高红移的最亮星系团(S4:LX = 1.77E44 erg/s,0.1 < z < 0.6)表现出更高的偏袒 b = 4.34 ± 0.62。卫星星系群很少见,S0(S4)样本的卫星比例小于 14.9%(8.1%)。我们将 HOD 预测与 HAM 程序相结合,以一种新的方式约束 LX 与质量之间的标度关系,并发现弥散为 0.36。我们得到了物理冷暗物质密度 0.12+0.03-0.02 和平均晕偏袒 b = 3.63+1.02-0.85 的宇宙学约束。我们首次采用 HOD 方法对星系团聚类进行建模,为未来将 eROSITA 与 4MOST、SDSS、Euclid、Rubin 和 DESI 相结合以揭示宇宙中星系团分布的研究铺平了道路。
英文摘要:
The spatial distribution of galaxy clusters provides a reliable tracer of the large-scale distribution of matter in the Universe. The clustering signal depends on intrinsic cluster properties and cosmological parameters. The ability of eROSITA onboard Spectrum-Roentgen-Gamma (SRG) to discover galaxy clusters allows probing the association of extended X-ray emission to dark matter haloes. We aim to measure the projected two-point correlation function to study the occupation of dark matter halos by clusters and groups detected by the first eROSITA all-sky survey (eRASS1). We create five volume-limited samples probing clusters with different redshift and X-ray luminosity. We interpret the correlation function with halo occupation distribution (HOD) and halo abundance matching (HAM) models. We simultaneously fit cosmological parameters and halo bias of a flux-limited sample of 6493 clusters with purity > 96%. Results. We obtain a detailed view of the halo occupation for eRASS1 clusters. The fainter population at low redshift (S0: LX = 4.63E43 erg/s, 0.1 < z < 0.2) is the least biased compared to dark matter, with b = 2.95 $\pm$ 0.21. The brightest clusters up to higher redshift (S4: LX = 1.77E44 erg/s , 0.1 < z < 0.6) exhibit a higher bias b = 4.34 $\pm$ 0.62. Satellite groups are rare, with a satellite fraction < 14.9% (8.1) for the S0 (S4) sample. We combine the HOD prediction with a HAM procedure to constrain the scaling relation between LX and mass in a new way and find a scatter of 0.36. We obtain cosmological constraints for the physical cold dark matter density 0.12+0.03-0.02 and an average halo bias b = 3.63+1.02-0.85. We model the clustering of galaxy clusters with a HOD approach for the first time, paving the way for future studies combining eROSITA with 4MOST, SDSS, Euclid, Rubin, and DESI to unravel the cluster distribution in the Universe.
The SRG/eROSITA All-Sky Survey $J$-Band Follow-Up Observations for Selected High-Redshift Galaxy Cluster Candidates
University of Innsbruck(因斯布鲁克大学);Max Planck Institute for Extraterrestrial Physics(马克斯·普朗克地外物理学研究所);INAF, Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所空间天体物理与科学观测站)
The SRG/eROSITA all-sky survey: The morphologies of clusters of galaxies: II. The intrinsic distributions of morphological parameters
Max-Planck-Institut für extraterrestrische Physik(马克斯·普朗克地外物理学研究所);IRAP, CNRS, UPS, CNES(法国国家科学研究中心/图卢兹第三大学/欧洲空间局天体物理研究所);Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University(北京师范大学天文与前沿科学研究院);Argelander-Institut für Astronomie (AIfA), Universität Bonn(波恩大学阿尔兰德尔天文学研究所)
The SRG/eROSITA All-Sky Survey. The Weak-Lensing Mass Calibration and the Stellar Mass-to-Halo Mass Relation from the Hyper Suprime-Cam Subaru Strategic Program
National Cheng Kung University(国立成功大学);Max Planck Institute for Extraterrestrial Physics(马克斯·普朗克地外物理研究所);INAF, Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所空间科学天文台);Hiroshima University(广岛大学);Academia Sinica(中央研究院);Chiba University(千叶大学);National Yang Ming Chiao Tung University(国立阳明交通大学)
The SRG/eROSITA All-Sky Survey: Early dark energy and Hubble constant from the cluster mass function
Max Planck Institute for Extraterrestrial Physics(马克斯·普朗克地外物理研究所);LMU München(慕尼黑大学);Universität Innsbruck(因斯布鲁克大学);IRAP, Université de Toulouse, CNRS, UPS, CNES(图卢兹大学/法国国家科学研究中心/法国航天研究中心天体物理学与行星学研究所);INAF, Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所空间天体物理观测站);Beijing Normal University(北京师范大学);Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3(格勒诺布尔阿尔卑斯大学);National Cheng Kung University(国立成功大学);Nagoya University(名古屋大学);The University of Tokyo(东京大学)
The Abell 3391/95 galaxy cluster system: A 15 Mpc intergalactic medium emission filament, a warm gas bridge, infalling matter clumps, and (re-) accelerated plasma discovered by combining SRG/eROSITA data with ASKAP/EMU and DECam data
The SRG/eROSITA All-Sky Survey. Detection of shock-heated gas beyond the halo boundary into the accretion region
Max Planck Institute for Extraterrestrial Physics(马克斯·普朗克地外物理研究所);Department of Astronomy, University of Maryland(马里兰大学天文学系);INAF, Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所空间科学天文台);Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University(北京师范大学天文与前沿科学研究院)
The SRG/eROSITA all-sky survey: X-ray scaling relations of galaxy groups and clusters in the western Galactic hemisphere
Max Planck Institute for extraterrestrial Physics(马克斯·普朗克地外物理研究所);Ludwig-Maximilians-Universität(慕尼黑大学);INAF, Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所空间天文台);IRAP, Université de Toulouse, CNRS, UPS, CNES(图卢兹大学);Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University(北京师范大学天文与前沿科学研究院);Argelander-Institut für Astronomie (AIfA), Universität Bonn(波恩大学阿根德纳天文学研究所)
The SRG/eROSITA All-Sky Survey: A comprehensive X-ray analysis of the Hydra I galaxy cluster
Universität Bonn(波恩大学);Università degli studi di Roma ‘Tor Vergata’(罗马托维尔加塔大学);INFN, Sezione di Roma 2(意大利国家核物理研究所罗马第二分部);Max-Planck-Institut für Radioastronomie(马克斯·普朗克射电天文研究所);Universität Erlangen-Nürnberg(埃尔朗根-纽伦堡大学)
The SRG/eROSITA all-sky survey: Constraints on Ultra-light Axion Dark Matter through Galaxy Cluster Number Counts
Max Planck Institute for Extraterrestrial Physics(马克斯·普朗克地外物理研究所);Universität Innsbruck, Institut für Astro- und Teilchenphysik(因斯布鲁克大学天体与粒子物理研究所);INAF, Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所空间科学与天文观测台);Department of Physics and Astronomy, Stony Brook University(纽约州立大学石溪分校物理与天文学系);Universität Hamburg, Hamburger Sternwarte(汉堡大学汉堡天文台);Department of Physics, National Cheng Kung University(国立成功大学物理系);IRAP, Université de Toulouse, CNRS, UPS, CNES(图卢兹大学宇宙射线与天体物理学研究所)
The eROSITA view of the Abell 3391/95 field: The Northern Clump. The largest infalling structure in the longest known gas filament observed with eROSITA, XMM-Newton, and Chandra
New galaxy cluster in the Zone of Avoidance SRGe CL0512.7+3712. Discovery and multi-wavelength characterization
Max Planck Institute for Astrophysics(马克斯·普朗克天体物理研究所);Rudolf Peierls Centre for Theoretical Physics, Department of Physics, University of Oxford(牛津大学理论物理学鲁道夫·皮尔斯中心);Space Research Institute (IKI)(空间科学研究院);Kazan Federal University(喀山联邦大学);Tatarstan Academy of Sciences(鞑靼斯坦科学院);Center for Astrophysics, Harvard & Smithsonian(哈佛-史密森尼天体物理中心)