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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

The astrophysical origin of gravitational wave (GW) transients is a timely open question in the wake of discoveries by LIGO/Virgo. In active galactic nuclei (AGNs), binaries form and evolve efficiently by interaction with a dense population…

High Energy Astrophysical Phenomena · Physics 2021-01-27 Hiromichi Tagawa , Bence Kocsis , Zoltan Haiman , Imre Bartos , Kazuyuki Omukai , Johan Samsing

Black hole mergers detectable with LIGO can occur in active galactic nucleus (AGN) disks. Here we parameterize the merger rates, the mass spectrum and the spin spectrum of black holes (BH) in AGN disks. The predicted merger rate spans $\sim…

High Energy Astrophysical Phenomena · Physics 2018-10-23 B. McKernan , K. E. S. Ford , J. Bellovary , N. W. C. Leigh , Z. Haiman , B. Kocsis , W. Lyra , M. -M. MacLow , B. Metzger , M. O'Dowd , S. Endlich , D. J. Rosen

The dense and gaseous environments of active galactic nuclei (AGNs) can catalyze repeated mergers of stellar-mass black holes (BHs), potentially explaining the high-mass tail of binary black hole (BBH) mergers observed by LIGO-Virgo-KAGRA…

High Energy Astrophysical Phenomena · Physics 2025-08-22 Maria Paola Vaccaro

The astrophysical origin of gravitational wave (GW) events is one of the most timely problems in the wake of the LIGO/Virgo discoveries. In active galactic nuclei (AGN), binaries form and evolve efficiently by dynamical interactions and…

High Energy Astrophysical Phenomena · Physics 2020-08-19 Hiromichi Tagawa , Zoltan Haiman , Imre Bartos , Bence Kocsis

Active galactic nuclei (AGN) are powered by accretion disks onto supermassive black holes in the the centers of galaxies. AGN are believed to play important roles in the evolution of both supermassive black holes and their host galaxies…

High Energy Astrophysical Phenomena · Physics 2025-06-11 K. E. Saavik Ford , Barry McKernan

Galactic nuclei are promising sites for stellar origin black hole (BH) mergers, as part of merger hierarchies in deep potential wells. We show that binary black hole (BBH) merger rates in active galactic nuclei (AGN) should always exceed…

High Energy Astrophysical Phenomena · Physics 2022-12-07 K. E. Saavik Ford , Barry McKernan

Active galactic nuclei (AGN) are promising environments for the assembly of merging binary black hole (BBH) systems. Interest in AGNs as nurseries for merging BBH is rising following the detection of gravitational waves from a BBH system…

General Relativity and Quantum Cosmology · Physics 2023-03-06 Avi Vajpeyi , Eric Thrane , Rory Smith , Barry McKernan , K. E. Saavik Ford

There is much debate about the channels for astrophysical origins of the stellar-mass binary black hole (BBH) mergers detected by LIGO and Virgo. Active galactic nuclei (AGNs) are promising sites for the efficient formation and rapid…

High Energy Astrophysical Phenomena · Physics 2025-04-30 Guo-Peng Li

The origins of the stellar-mass black hole mergers discovered by LIGO/Virgo are still unknown. Here we show that, if migration traps develop in the \add{accretion} disks of Active Galactic Nuclei (AGNs) and promote the mergers of their…

The disks of active galactic nuclei (AGNs) provide a natural environment where stellar-mass black holes (BHs) can dynamically pair, undergo repeated interactions, and eventually merge. It is commonly assumed that gas accretion will both…

High Energy Astrophysical Phenomena · Physics 2026-03-25 Gaia Fabj , Christopher Tiede , Connar Rowan , Martin Pessah , Johan Samsing

There are indications that stellar-origin black holes (BHs) are efficiently paired up in binary black holes (BBHs) in Active Galactic Nuclei (AGN) disc environments, which can undergo interactions with single BHs in the disc. Such…

Astrophysics of Galaxies · Physics 2024-11-28 Gaia Fabj , Johan Samsing

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

The growing number of stellar-mass binary black hole mergers discovered by Advanced LIGO and Advanced Virgo are starting to constrain the binaries' origin and environment. However, we still lack sufficiently accurate modeling of binary…

High Energy Astrophysical Phenomena · Physics 2019-05-15 Y. Yang , I. Bartos , Z. Haiman , B. Kocsis , Z. Marka , N. C. Stone , S. Marka

The accretion disks that fuel active galactic nuclei (AGN) may house numerous stars and compact objects, formed in situ or captured from nearby star clusters. Embedded neutron stars and black holes may form binaries and eventually merge,…

High Energy Astrophysical Phenomena · Physics 2023-10-31 Alexander J. Dittmann , Adam M. Dempsey , Hui Li

A population of binary stellar-mass black hole (BBH) mergers are believed to occur embedded in the accretion disk of active galactic nuclei (AGNs). In this {\em Letter}, we demonstrate that the jets from these BBH mergers can propagate…

High Energy Astrophysical Phenomena · Physics 2023-11-21 Jin-Ping Zhu

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

The stellar mass binary black hole (sBBH) mergers presently detected by LIGO may originate wholly or in part from binary black hole mergers embedded in disks of gas around supermassive black holes. Determining the contribution of these…

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…

The majority of gravitational wave (GW) events detected so far by LIGO/Virgo originate from binary black hole (BBH) mergers. Among the different binary evolution paths, the merger of BBHs in accretion discs of active galactic nuclei (AGNs)…

Astrophysics of Galaxies · Physics 2020-07-01 Matthias Gröbner , Wako Ishibashi , Shubhanshu Tiwari , Maria Haney , Philippe Jetzer
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