99 citations · 350 across the 11 of their papers we have counts for
11 papers
Spin and Obliquity Distributions of Low-mass Planets Shaped by Dynamical Instability
Dieran Wang, Jiaru Li, Dong Lai
Exoplanetary systems hosting multiple low-mass planets are thought to have experienced dynamical instability, during which planet-planet collisions and mergers occur; these collisi…
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…
Resonant Excitation of Planetary Eccentricity due to a Dispersing Eccentric Protoplanetary Disk: A New Mechanism of Generating Large Planetary Eccentricities
Jiaru Li, Dong Lai
We present a new mechanism of generating large planetary eccentricities. This mechanism applies to planets within the inner cavities of their companion protoplanetary disks. A mass…
Dynamical Instability in Multi-Orbiter Systems with Gas Friction
Jiaru Li, Laetitia Rodet, Dong Lai
Closely-packed multi-planet systems are known to experience dynamical instability if the spacings between the planets are too small. Such instability can be tempered by the frictio…
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…
Ring Formation in Protoplanetary Disks Driven by an Eccentric Instability
Jiaru Li, Adam M. Dempsey, Hui Li +1
We find that, under certain conditions, protoplanetary disks may spontaneously generate multiple, concentric gas rings without an embedded planet through an eccentric cooling insta…
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…
Giant Planet Scatterings and Collisions: Hydrodynamics, Merger-Ejection Branching Ratio, and Properties of the Remnants
Jiaru Li, Dong Lai, Kassandra R. Anderson +1
Planetary systems with sufficiently small orbital spacings can experience planetary mergers and ejections. The branching ratio of mergers vs ejections depends sensitively on the tr…
Planetary Spin and Obliquity from Mergers
Jiaru Li, Dong Lai
In planetary systems with sufficiently small inter-planet spacing, close encounters can lead to planetary collisions/mergers or ejections. We study the spin property of the merger…