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Related papers: Simulation of Binary-Single Interactions in AGN Di…

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Stellar-mass binary black hole\,(BBH) mergers resulting from binary-single interactions\,(BSIs) in active galactic nucleus\,(AGN) disks are a potential source of gravitational wave\,(GW) events with measurable eccentricities. Previous…

High Energy Astrophysical Phenomena · Physics 2025-10-13 Mengye Wang , Qingwen Wu , Yiqiu Ma

Black hole binary systems embedded in AGN discs have been proposed as a source of the observed gravitational waves (GWs) from LIGO-Virgo-KAGRA. Studies have indicated binary-single encounters could be common place within this population,…

Astrophysics of Galaxies · Physics 2025-01-16 Connar Rowan , Henry Whitehead , Gaia Fabj , Pankaj Saini , Bence Kocsis , Martin Pessah , Johan Samsing

We perform a series of high-resolution 2D hydrodynamical simulations of equal-mass binary black holes (BBHs) embedded in active galactic nucleus (AGN) accretion disks to study whether these binaries can be driven to merger by the…

High Energy Astrophysical Phenomena · Physics 2021-05-05 Ya-Ping Li , Adam M. Dempsey , Shengtai Li , Hui Li , Jiaru Li

Binary black hole (BBH) mergers, particularly those with component masses in the pair-instability gap, may be produced by hierarchical mergers in the disks surrounding Active Galactic Nuclei (AGN). While the interaction of an embedded BBH…

High Energy Astrophysical Phenomena · Physics 2022-04-13 Ya-Ping Li , Adam M. Dempsey , Hui Li , Shengtai Li , Jiaru Li

We investigate close encounters by stellar mass black holes (BHs) in the gaseous discs of active galactic nuclei (AGN) as a potential formation channel of binary black holes (BBHs). We perform a series of 2D isothermal viscous…

Astrophysics of Galaxies · Physics 2024-09-24 Henry Whitehead , Connar Rowan , Tjarda Boekholt , Bence Kocsis

Merging supermassive black hole-black hole (BHBH) binaries produced in galaxy mergers are promising sources of detectable gravitational waves. If such a merger takes place in a gaseous environment, there is a possibility of a simultaneous…

High Energy Astrophysical Phenomena · Physics 2010-05-12 Brian D. Farris , Yuk Tung Liu , Stuart L. Shapiro

Stellar-mass black holes can become embedded within the gaseous disks of active galactic nuclei (AGNs). Afterwards, their interactions are mediated by their gaseous surroundings. In this work, we study the evolution of stellar-mass binary…

High Energy Astrophysical Phenomena · Physics 2023-03-08 Nicholas Kaaz , Sophie Lund Schrøder , Jeff J. Andrews , Andrea Antoni , Enrico Ramirez-Ruiz

LIGO/Virgo has detected several binary black hole (BBH) merger events that may have originated in the accretion disks of Active Galactic Nuclei (AGN). These events require individual black hole masses that fall within the pair instability…

High Energy Astrophysical Phenomena · Physics 2022-12-07 Adam M. Dempsey , Hui Li , Bhupendra Mishra , Shengtai Li

We study the close encounters between two single black holes (BHs) embedded in an AGN disk using a series of global 2D hydrodynamics simulations. We find that when the disk density is sufficiently high, bound BH binaries can be formed by…

High Energy Astrophysical Phenomena · Physics 2023-03-01 Jiaru Li , Adam M. Dempsey , Hui Li , Dong Lai , Shengtai Li

Motivated by the increasing number of detections of merging black holes by LIGO-VIRGO-KAGRA, black hole (BH) binary mergers in the discs of active galactic nuclei (AGN) is investigated as a possible merger channel. In this pathway, BH…

Astrophysics of Galaxies · Physics 2023-07-12 Connar Rowan , Tjarda Boekholt , Bence Kocsis , Zoltán Haiman

We assess the contribution of dynamical hardening by direct three-body scattering interactions to the rate of stellar-mass black hole binary (BHB) mergers in galactic nuclei. We derive an analytic model for the single-binary encounter rate…

Recently, advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO) has detected black hole (BH) merger events, most of which are sourced by BHs more massive than $30~M_\odot$. Especially, the observation of GW170104 suggests…

Astrophysics of Galaxies · Physics 2018-04-11 Hiromichi Tagawa , Masayuki Umemura

We investigate the thermodynamics of close encounters between stellar mass black holes (BHs) in the gaseous discs of active galactic nuclei (AGN), during which binary black holes (BBHs) may form. We consider a suite of 2D viscous…

High Energy Astrophysical Phenomena · Physics 2024-09-24 Henry Whitehead , Connar Rowan , Tjarda Boekholt , Bence Kocsis

We study the dynamical evolution of the stellar mass binary black holes (BBHs) in a galactic nucleus that contains a massive black hole (MBH). For a comprehensive study of their merging events, we consider simultaneously the non-resonant…

Astrophysics of Galaxies · Physics 2020-08-17 Fupeng Zhang , Lijing Shao , Weishan Zhu

We explore the evolution of stellar mass black hole binaries (BHBs) which are formed in the self-gravitating disks of active galactic nuclei (AGN). Hardening due to three-body scattering and gaseous drag are effective mechanisms that reduce…

Astrophysics of Galaxies · Physics 2017-01-03 Nicholas C. Stone , Brian D. Metzger , Zoltan Haiman

Binary black hole (BBH) mergers are the primary sources of gravitational wave (GW) events detected by LIGO/Virgo. Binary black holes embedded in the accretion discs of active galactic nuclei (AGN) are possible candidates for such GW events.…

Astrophysics of Galaxies · Physics 2020-07-22 W. Ishibashi , M. Gröbner

We investigate close encounters between initially unbound black holes (BHs) in the gaseous discs of active galactic nuclei (AGN), performing the first 3D non-isothermal hydrodynamical simulations of gas-assisted binary BH formation. We…

High Energy Astrophysical Phenomena · Physics 2025-08-28 Henry Whitehead , Connar Rowan , Bence Kocsis

Simultaneous gravitational and electromagnetic wave observations of merging black hole binaries (BHBHs) can provide unique opportunities to study gravitation physics, accretion and cosmology. Here we perform fully general relativistic,…

High Energy Astrophysical Phenomena · Physics 2011-08-08 Brian D. Farris , Yuk Tung Liu , Stuart L. Shapiro

Using SPH numerical simulations, we investigate the effects of gas on the inspiral and merger of a massive black hole binary. This study is motivated by the very massive nuclear gas disks observed in the central regions of merging galaxies.…

Astrophysics · Physics 2009-11-10 Andres Escala , Richard B. Larson , Paolo S. Coppi , Diego Mardones

Stellar-mass binary black hole (BBH) mergers occurring within the disks of active galactic nuclei (AGN) are promising sources for gravitational waves detectable by the LIGO, Virgo, and KAGRA (LVK) interferometers. Some of these events have…

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