Black hole binary formation in AGN discs: from isolation to merger

C Rowan, T Boekholt, B Kocsis… - Monthly Notices of the …, 2023 - academic.oup.com
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 (AGNs) is …

Gas dynamical friction as a binary formation mechanism in AGN discs

S DeLaurentiis, M Epstein-Martin… - Monthly Notices of the …, 2023 - academic.oup.com
In this paper, we study how gaseous dynamical friction (DF) affects the motion of fly-by
stellar-mass black holes (sBHs) embedded in active galactic nucleus (AGN) discs. We …

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 …

Binary formation through gas-assisted capture and the implications for stellar, planetary, and compact object evolution

M Rozner, A Generozov… - Monthly Notices of the …, 2023 - academic.oup.com
Binary systems are ubiquitous and their formation requires two-body interaction and
dissipation. In gaseous media, interactions between two initially unbound objects could …

Hydrodynamical Simulations of Black Hole Binary Formation in AGN Disks

J Li, AM Dempsey, H Li, D Lai, S Li - The Astrophysical Journal …, 2023 - iopscience.iop.org
We study 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 …

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 …

Isles of regularity in a sea of chaos amid the gravitational three-body problem

AA Irani, NWC Leigh, TCN Boekholt… - Astronomy & …, 2024 - aanda.org
Context. The three-body problem (3BP) poses a longstanding challenge in physics and
celestial mechanics. Despite the impossibility of obtaining general analytical solutions …

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 …