The High Energy X-ray Probe (HEX-P): Constraining Supermassive Black Hole Growth with Population Spin Measurements
J. M. Piotrowska, J. A. García, D. J. Walton, R. S. Beckmann, D. Stern, D. R. Ballantyne, D. R. Wilkins, S. Bianchi, P. G. Boorman, J. Buchner, C. -T. Chen, P. … 展开作者
J. M. Piotrowska, J. A. García, D. J. Walton, R. S. Beckmann, D. Stern, D. R. Ballantyne, D. R. Wilkins, S. Bianchi, P. G. Boorman, J. Buchner, C. -T. Chen, P. Coppi, T. Dauser, A. C. Fabian, E. Kammoun, K. Madsen, L. Mallick, G. Matt, G. Matzeu, E. Nardini, A. Pizzetti, S. Puccetti, C. Ricci, F. Tombesi, N. Torres-Albà, K. -W. Wong, the HEX-P Collaboration
备注：
26 pages, 11 figures, submitted for publication in Frontiers in Astronomy and Space Sciences
Constraining the primary growth channel of supermassive black holes (SMBH) remains one the most actively debated questions in the context of cosmological structure formation. Owing to the expected connection between SMBH spin parameter evolution and the accretion and merger history of individual black holes, population spin measurements offer a rare observational window into the SMBH cosmic growth. As of today, the most common method for estimating SMBH spin relies on modeling the relativistically broaden atomic profiles in the reflection spectrum observed in X-rays. In this paper, we study the observational requirements needed to confidently distinguish between the primary SMBH growth channels, based on their distinct spin-mass distributions predicted by the Horizon-AGN cosmological simulation. In doing so, we characterize outstanding limitations associated with the existing measurements and discuss the landscape of future observational campaigns, which can be planned and executed with future X-ray observatories. We focus our attention on the High-Energy X-ray Probe (HEX-P), a concept probe-class mission aimed to serve the high-energy community in the 2030s.
Constraining spins of supermassive black holes from TeV variability. II. fully general relativistic calculations
观测到了来自M87中心的TeV能量光子的快速变化，为估算超大质量黑洞（SMBH）的自旋提供了新的线索.我们扩展了Wang et al.（2008）的研究，包括所有的广义相对论效应。通过数值求解辐射无效吸积流的相对论流体动力学方程组，得到了黑洞周围的辐射场。在Kerr度规中计算了TeV光子对产生的辐射场的光学深度。我们发现，光学深度强烈依赖于：（1）吸积率为$\tautev\propto \dot{M}^{2.5-5.0}$;（2）黑洞自旋;（3）TeV源的位置。结合光学厚度和RIAF辐射的光谱能量分布，可以大大缓解RIAF模型中自旋与其他自由参数的强烈退化。我们将这个模型应用到M87中，发现黑洞的最小比角动量为$a\sim0.8$。本方法适用于M87类源与未来的TeV的排放量的检测，以限制SMBHs的自旋。
BASS. XXXVI. Constraining the Local Supermassive Black Hole - Halo Connection with BASS DR2 AGN
利用Swift/BAT活动星系核光谱巡天（BASS DR 2）的活动星系核（AGN）的聚类统计和光度函数，研究了局域宇宙中超大质量黑洞（SMBH）与其宿主暗物质晕之间的联系.通过正演模拟活动星系核活动到快照晕目录从N体模拟，我们测试的情况下，SMBH质量相关的暗物质（子）晕质量固定的恒星质量。我们比较这一模型缺乏这种相关性，恒星质量单独决定SMBH质量。我们发现，虽然这两个简单的模型能够在很大程度上再现的丰度和整体集群的活动星系核，黑洞质量与晕质量密切相关的模型是首选的数据由$1.8σ$。当包括一个独立的测量黑洞质量晕质量相关性，这个模型是首选的$4.6σ$。我们发现，与黑洞质量的聚类趋势可以进一步打破两种情况之间的退化，我们的首选模型再现测量的聚类差异1晕尺度之间的大，小黑洞质量。这些结果表明，晕结合能与超大质量黑洞的生长有着根本的联系。
Extreme Love in the SPA: constraining the tidal deformability of supermassive objects with extreme mass ratio inspirals and semi-analytical, frequency-domain waveforms
Constraining the origin of the nanohertz gravitational-wave background by pulsar timing array observations of both the background and individual supermassive binary black holes
Constraining Orbital Eccentricity of a Supermassive Black Hole Binary Candidate PKS 2131-0211
Joint Astronomy Programme, Department of Physics, Indian Institute of Science（印度科学研究所物理系联合天文学项目）；Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research（塔塔基础研究院天文与天体物理学系）；Max-Planck-Institut für Radioastronomie（马克斯·普朗克射电天文研究所）；Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata（加尔各答印度科学教育研究所物理科学系）
No evidence for a supermassive black hole binary in GSN 069
Tsung-Dao Lee Institute, Shanghai Jiao-Tong University（上海交大李政道研究所）；School of Physics & Astronomy, Shanghai Jiao-Tong University（上海交通大学物理与天文学院）；Institute for Astronomy, School of Physics, Zhejiang University（浙江大学物理学院天体物理研究所）；Center for Cosmology and Computational Astrophysics, Institute for Advanced Study in Physics, Zhejiang University（浙江大学物理学高等研究院宇宙学与计算天体物理中心）；Department of Astronomy, University of Science and Technology of China（中国科学技术大学天文系）
Multiwavelength periodic microlensing signatures of macrolensed supermassive binary black holes
National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；School of Astronomy and Space Science, University of Chinese Academy of Sciences（中国科学院大学天文学与空间科学学院）
Upper limits on microhertz gravitational waves from supermassive black-hole binaries using PSR J1909-3744 data from the second IPTA data release
Xinjiang Astronomical Observatories, Chinese Academy of Sciences（中国科学院新疆天文台）；University of Chinese Academy of Sciences（中国科学院大学）；Institute of Optoelectronic Technology, Lishui University（丽水学院光电技术研究所）
Selection bias in dynamically-measured supermassive black hole samples: Scaling relations and correlations between residuals in semi-analytic galaxy formation models
The High Energy X-ray Probe (HEX-P): resolving the nature of Sgr A* flares, compact object binaries and diffuse X-ray emission in the Galactic Center and beyond
Supermassive black hole binaries in the multi-messenger context of ground and spaceborne VLBI
Delft University of Technology（代尔夫特理工大学）；Joint Institute for VLBI ERIC (JIVE)（甚长基线干涉测量欧洲联合研究所）；Niels Bohr Institute（尼尔斯·玻尔研究所）；Space Telescope Science Institute（太空望远镜科学研究所）；Johns Hopkins University（约翰斯·霍普金斯大学）；Space Initiatives Inc（太空倡议公司）
A Joint Optimal Search for Gravitational Waves from Resolved and Unresolved Supermassive Binary Black Holes with Pulsar Timing Arrays
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理研究所（爱因斯坦研究所））；Leibniz Universität Hannover（汉诺威莱布尼茨大学）；School of Natural Sciences, Institute for Advanced Study（普林斯顿高等研究院自然科学学院）
