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Dynamical Friction Models for Black-Hole Binary Formation in AGN Disks
Kecheng Qian, Jiaru Li, Dong Lai
Stellar-mass black holes (sBH) embedded in gaseous disks of active galactic nuclei (AGN) can be important sources of detectable gravitational radiation for LIGO/Virgo when they for…
Hydrodynamical Simulations of Black-Hole Binary Formation in AGN Disks
Jiaru Li, Adam M. Dempsey, Hui Li +2
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…
Long-term Evolution of Tightly-Packed Stellar Black Holes in AGN Disks: Formation of Merging Black-Hole Binaries via Close Encounters
Jiaru Li, Dong Lai, Laetitia Rodet
We study the long-term evolution of two or more stellar black holes (BHs) on initially separated but unstable circular orbits around a supermassive BH (SMBH). Such a close-packed o…
Hot Circumsingle Disks Drive Binary Black Hole Mergers in Active Galactic Nucleus Disks
Ya-Ping Li, Adam M. Dempsey, Hui Li +2
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 Galac…
Orbital evolution of binary black holes in active galactic nucleus disks: a disk channel for binary black hole mergers?
Ya-Ping Li, Adam M. Dempsey, Shengtai Li +2
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 whet…