Phenomenology and origin of late-time tails in eccentric binary black hole mergers
Kavli Institute for Theoretical Physics, University of California Santa Barbara（加州大学圣塔芭芭拉分校卡弗里理论物理研究所）；University of Massachusetts, Dartmouth（麻省大学达特茅斯分校）；University of Rhode Island（罗德岛大学）；Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理学研究所（爱因斯坦研究所））；Niels Bohr International Academy, Niels Bohr Institute（尼尔斯·玻尔国际学院，尼尔斯·玻尔研究所）
Tousif Islam, Guglielmo Faggioli, Gaurav Khanna, Scott E. Field, Maarten van de Meent, Alessandra Buonanno
备注：
16 pages, 18 figures
发表信息：
Phys. Rev. D 112, 024061 - Published 28 July, 2025
We investigate the late-time tail behavior in gravitational waves from merging eccentric binary black holes (BBH) using black hole perturbation theory. For simplicity, we focus only on the dominant quadrupolar mode of the radiation. We demonstrate that such tails become more prominent as eccentricity increases. Exploring the phenomenology of the tails in both spinning and non-spinning eccentric binaries, with the spin magnitude varying from $χ=-0.6$ to $χ=+0.6$ and eccentricity as high as $e=0.98$, we find that these tails can be well approximated by a slowly decaying power law. We study the power law for varying systems and find that the power law exponent lies close to the theoretically expected value $-4$. Finally, using both plunge geodesic and radiation-reaction-driven orbits, we perform a series of numerical experiments to understand the origin of the tails in BBH simulations. Our results suggest that the late-time tails are strongly excited in eccentric BBH systems when the smaller black hole is in the neighborhood of the apocenter, as opposed to any structure in the strong field of the larger black hole. Our analysis framework is publicly available through the \texttt{gwtails} Python package.
Data-driven extraction, phenomenology and modeling of eccentric harmonics in binary black hole merger waveforms
Kavli Institute for Theoretical Physics, University of California Santa Barbara（加州大学圣塔芭芭拉分校卡弗里理论物理研究所）；Theoretical AstroPhysics Including Relativity and Cosmology, California Institute of Technology（加州理工学院理论天体物理学（含相对论与宇宙学））；Department of Physics, University of California at Santa Barbara（加州大学圣塔芭芭拉分校物理系）；International Centre for Theoretical Sciences, Tata Institute of Fundamental Research（印度塔塔基础研究院国际理论科学中心）；Department of Physics and Astronomy, Johns Hopkins University（约翰斯·霍普金斯大学物理与天文系）；School of Natural Sciences, Institute for Advanced Study（普林斯顿高等研究院自然科学院）；TAPIR, Walter Burke Institute for Theoretical Physics, California Institute of Technology（加州理工学院沃尔特·伯克理论物理研究所 TAPIR）；Department of Particle Physics & Astrophysics, Weizmann Institute of Science（魏茨曼科学研究所粒子物理与天体物理系）
Analysis of late-time tails in spin-aligned eccentric binary black hole mergers
Kavli Institute for Theoretical Physics, University of California Santa Barbara（加州大学圣塔芭芭拉分校卡弗里理论物理研究所）；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））；Department of Physics and Institute for AI & Computational Research, University of Rhode Island（罗德岛大学物理系与人工智能及计算研究所）；Department of Physics and Center for Scientific Computing & Data Science Research, University of Massachusetts, Dartmouth（马萨诸塞大学达特茅斯分校物理系与科学计算及数据科学研究中心）
Enabling gravitational-wave astronomy with spin-precessing black holes on generic orbits
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））；Nottingham Centre of Gravity & School of Mathematical Sciences, University of Nottingham（诺丁汉大学重力中心与数学科学学院）；Department of Physics, University of Maryland（马里兰大学物理系）；Cornell Center for Astrophysics and Planetary Science, Cornell University（康奈尔大学天体物理学与行星科学中心）；Departament de Física, Universitat de les Illes Balears（巴利阿里群岛大学物理系）
IFPU, Institute for Fundamental Physics of the Universe（基础物理宇宙研究所）；SISSA, International School for Advanced Studies（高级研究国际学院）；INFN Sezione di Trieste（的里雅斯特国家核物理研究所）
Spin the black circle II: tidal heating and torquing of a rotating black hole by a test mass on generic orbits
University of California, Berkeley（加州大学伯克利分校）；The Pennsylvania State University（宾夕法尼亚州立大学）；Universitá degli Studi di Torino（都灵大学）；INFN sezione di Torino（意大利国家核物理研究所都灵分部）；Friedrich-Schiller-Universität Jena（耶拿弗里德里希·席勒大学）
ESIGMAHM: An Eccentric, Spinning inspiral-merger-ringdown waveform model with Higher Modes for the detection and characterization of binary black holes
Numerical simulations of low-mass black hole-neutron star mergers with moderate eccentricities
Institut für Physik und Astronomie, Universität Potsdam（波茨坦大学物理与天文学研究所）；Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理学研究所（爱因斯坦研究所））
