A Multimessenger Search for the Supermassive Black Hole Binary in 3C 66B with the Parkes Pulsar Timing Array
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）；International Centre for Radio Astronomy Research, Curtin University（科廷大学国际射电天文研究中心）；Hunan Normal University（湖南师范大学）；Monash University（蒙纳士大学）；Australia Telescope National Facility, CSIRO, Space and Astronomy（澳大利亚望远镜国家设施，CSIRO空间与天文部门）
Jacob Cardinal Tremblay, Boris Goncharov, Rutger van Haasteren, N. D. Ramesh Bhat, Zu-Cheng Chen, Valentina Di Marco, Satoru Iguchi, Agastya Kapur, Wenhua Ling,… 展开作者
Jacob Cardinal Tremblay, Boris Goncharov, Rutger van Haasteren, N. D. Ramesh Bhat, Zu-Cheng Chen, Valentina Di Marco, Satoru Iguchi, Agastya Kapur, Wenhua Ling, Rami Mandow, Saurav Mishra, Daniel J. Reardon, Ryan M. Shannon, Hiroshi Sudou, Jingbo Wang, Shi-Yi Zhao, Xing-Jiang Zhu, Andrew Zic
A subparsec supermassive black hole binary (SMBHB) at the center of the galaxy 3C 66B is a promising candidate for continuous gravitational-wave searches with pulsar timing arrays (PTAs). In this work, we search for such a signal in the third data release of the Parkes Pulsar Timing Array. Matching our priors to estimates of binary parameters from electromagnetic observations, we find a log Bayes factor $\ln B = - 0.0027(7)$, highlighting that the source can be neither confirmed nor ruled out. We place upper limits at $95\%$ credibility on the chirp mass $M < 6.90 \times 10^{8}\ M_{\odot}$, and on the characteristic strain amplitude $\textrm{log}_{10}(h_0)< -14.44$. This partially rules out the parameter space suggested by electromagnetic (EM) observations of 3C 66B. We also independently reproduce the calculation of the chirp mass with the 3 mm flux monitor data from the unresolved core of 3C 66B. Based on this, we outline a new methodology for constructing a joint likelihood of EM and gravitational-wave data from SMBHBs. Finally, we suggest that targeted searches may allow firmly established SMBHB candidates to be treated as standard sirens, for complementary constraints on the Universe expansion rate.
Multimessenger Constraints on Supermassive Dark Stars and Their Black Hole Remnants
International Center for Quantum-field Measurement Systems for Studies of the Universe and Particles (QUP,WPI), High Energy Accelerator Research Organization (KEK)（宇宙与粒子量子场测量系统国际中心（QUP,WPI），高能加速器研究机构（KEK））；Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK)（粒子与核研究研究所（IPNS），高能加速器研究机构（KEK））；Graduate University for Advanced Studies (SOKENDAI)（综合研究大学院大学（SOKENDAI））；Kavli Institute for the Physics and Mathematics of the Universe (WPI)（宇宙物理与数学卡弗里研究所（WPI））
Searching for continuous gravitational waves in the Parkes Pulsar Timing Array Data Release 3
Beijing Normal University（北京师范大学）；Hunan Normal University（湖南师范大学）；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））；Curtin University（科廷大学）；Monash University（蒙纳士大学）；Western Sydney University（西悉尼大学）；Macquarie University（麦考瑞大学）；The Hong Kong University of Science and Technology（香港科技大学）；Swinburne University of Technology（斯威本科技大学）；Xinjiang Astronomical Observatory, Chinese Academy of Sciences（中国科学院新疆天文台）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）
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）
Nanohertz Gravitational-Wave Constraints on Supermassive Binary Black Holes at Cosmic Dawn
Beijing Normal University（北京师范大学）；Curtin University（科廷大学）；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）；Monash University（蒙纳士大学）；University of Melbourne（墨尔本大学）
Targeted search for eccentric supermassive binary black holes in OJ 287 and nearby galaxy clusters with PPTA DR3
Institute for Frontier in Astronomy and Astrophysics & Faculty of Arts and Sciences, Beijing Normal University（北京师范大学前沿天文与天体物理研究所及文理学院）；School of Physics and Astronomy, Beijing Normal University（北京师范大学物理与天文学院）；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 Physics and Astronomy, Monash University（蒙纳士大学物理与天文学院）；ARC Centre for Excellence for Gravitational Wave Discovery (OzGrav)（ARC引力波发现卓越中心（OzGrav））；Australia Telescope National Facility, CSIRO, Space & Astronomy（澳大利亚望远镜国家设施，CSIRO空间与天文部）；School of Physics, University of Melbourne（墨尔本大学物理学院）；Center for Gravitation, Cosmology and Astrophysics, Department of Physics, University of Wisconsin–Milwaukee（威斯康星大学密尔沃基分校物理系引力、宇宙学与天体物理中心）
The NANOGrav 15 yr Data Set: Targeted Searches for Supermassive Black Hole Binaries
West Virginia University（西弗吉尼亚大学）；Center for Gravitational Waves and Cosmology, West Virginia University（西弗吉尼亚大学引力波与宇宙学中心）；University of Wisconsin-Milwaukee（威斯康星大学密尔沃基分校）；University of North Carolina, Chapel Hill（北卡罗来纳大学教堂山分校）；Newcastle University（纽卡斯尔大学）；NASA Goddard Space Flight Center（美国国家航空航天局戈达德太空飞行中心）；Oregon State University（俄勒冈州立大学）；Widener University（韦德纳大学）；University of Birmingham（伯明翰大学）；University of Florida（佛罗里达大学）；Cornell University（康奈尔大学）；University of Connecticut（康涅狄格大学）；Yale University（耶鲁大学）；Washington State University（华盛顿州立大学）；FORTH（希腊研究所）；New Mexico Institute of Mining and Technology（新墨西哥矿业理工学院）；Montana State University（蒙大拿州立大学）；Franklin & Marshall College（富兰克林和马歇尔学院）
QPEs from Warped Disk Collisions with EMRIs: Brightness-Recurrence Diagram and Gravitational-Wave Follow-up
Wuhan University（武汉大学）；Centro de Astrobiología (CAB), CSIC-INTA（天体生物学中心（CAB），西班牙国家航空航天技术研究委员会-国家航空技术研究所）；University of Science and Technology of China（中国科学技术大学）；Tsung-Dao Lee Institute, Shanghai Jiao-Tong University（上海交大李政道研究所）；Shanghai Jiao-Tong University（上海交通大学）
