Stellar/BH population in AGN discs: direct binary formation from capture objects in nuclei clusters

Y Wang, Z Zhu, DNC Lin - Monthly Notices of the Royal …, 2024 - academic.oup.com
The active galactic nucleus (AGN) disc has been proposed as a potential channel for the
merger of binary black holes. The population of massive stars and black holes in AGN discs …

Dynamical Friction Models for Black Hole Binary Formation in Active Galactic Nucleus Disks

K Qian, J Li, D Lai - The Astrophysical Journal, 2024 - iopscience.iop.org
Stellar-mass black holes (sBHs) embedded in gaseous disks of active galactic nuclei (AGN)
can be important sources of detectable gravitational radiation for LIGO/Virgo when they form …

Black hole binaries in AGN accretion discs–II. Gas effects on black hole satellite scatterings

C Rowan, H Whitehead, T Boekholt… - Monthly Notices of …, 2024 - academic.oup.com
The black hole (BH) binaries in active galactic nuclei (AGN) are expected to form mainly
through scattering encounters in the ambient gaseous medium. Recent simulations …

Formation of Merging Stellar-mass Black Hole Binaries by Gravitational-wave Emission in Active Galactic Nucleus Disks

B Rom, R Sari, D Lai - The Astrophysical Journal, 2024 - iopscience.iop.org
Many stellar-mass black holes (sBHs) are expected to orbit supermassive black holes at
galactic centers. For galaxies with active galactic nuclei, it is likely that the sBHs reside in a …

Three-body encounters in black hole discs around a supermassive black hole-The disc velocity dispersion and the Keplerian tidal field determine the eccentricity and …

AA Trani, S Quaini, M Colpi - Astronomy & Astrophysics, 2024 - aanda.org
Context. Dynamical encounters of stellar-mass black holes (BHs) in a disc of compact
objects around a supermassive BH (SMBH) can accelerate the formation and coalescence …

The most luminous AGN do not produce the majority of the detected stellar-mass black hole binary mergers in the local Universe

N Veronesi, EM Rossi… - Monthly Notices of the …, 2023 - academic.oup.com
Despite the increasing number of gravitational wave (GW) detections, the astrophysical
origin of binary black hole (BBH) mergers remains elusive. A promising formation channel …

The Evolution of Inclined Binary Black Holes in the Disks of Active Galactic Nuclei

AJ Dittmann, AM Dempsey, H Li - The Astrophysical Journal, 2024 - iopscience.iop.org
The accretion disks that fuel active galactic nuclei (AGNs) may house numerous stars and
compact objects, formed in situ or captured from nearby star clusters. Embedded neutron …

Evidence for eccentricity in the population of binary black holes observed by LIGO-Virgo-KAGRA

N Gupte, A Ramos-Buades, A Buonanno, J Gair… - arXiv preprint arXiv …, 2024 - arxiv.org
Binary black holes (BBHs) in eccentric orbits produce distinct modulations the emitted
gravitational waves (GWs). The measurement of orbital eccentricity can provide robust …

The effect of thermal torques on AGN disc migration traps and gravitational wave populations

E Grishin, S Gilbaum, NC Stone - Monthly Notices of the Royal …, 2024 - academic.oup.com
Accretion discs in active galactic nuclei (AGNs) foster black hole (BH) formation, growth, and
mergers. Stellar mass BHs migrate inwards under the influence of hydrodynamical torques …

Shock Cooling and Breakout Emission for Optical Flares Associated with Gravitational-wave Events

H Tagawa, SS Kimura, Z Haiman… - The Astrophysical …, 2024 - iopscience.iop.org
The astrophysical origin of stellar-mass black hole (BH) mergers discovered through
gravitational waves (GWs) is widely debated. Mergers in the disks of active galactic nuclei …