285 citations · 1.5k across the 15 of their papers we have counts for
15 papers
Hydrodynamic Torques in Circumbinary Accretion Disks
Mackenzie S. L. Moody, Ji-Ming Shi, James M. Stone
Gaseous disks have been proposed as a mechanism for facilitating mergers of binary black holes. We explore circumbinary disk systems to determine the evolution of the central binar…
Nonlinear outcome of gravitational instability in an irradiated protoplanetary disc
Shigenobu Hirose, Ji-Ming Shi
Using local three dimensional radiation hydrodynamics simulations, the nonlinear outcome of gravitational instability in an irradiated protoplanetary disc is investigated in a para…
Gravito-turbulence in irradiated protoplanetary discs
Shigenobu Hirose, Ji-Ming Shi
Using radiation hydrodynamics simulations in a local stratified shearing box with realistic equations of state and opacities, we explored the outcome of self-gravity at 50 AU in a…
How bright are the gaps in circumbinary disk systems?
Ji-Ming Shi, Julian H. Krolik
When a circumbinary disk surrounds a binary whose secondary's mass is at least the primary's mass, a nearly empty cavity with radius a few times the binary sep…
Dust dynamics in 2D gravito-turbulent disks
Ji-Ming Shi, Zhaohuan Zhu, James M. Stone +1
The dynamics of solid bodies in protoplanetary disks are subject to the properties of any underlying gas turbulence. Turbulence driven by disk self-gravity shows features distinct…
Saturation of the magnetorotational instability in the unstratified shearing box with zero net flux: convergence in taller boxes
Ji-Ming Shi, James M. Stone, Chelsea X. Huang
Previous studies of the nonlinear regime of the magnetorotational instability in one particular type of shearing box model -- unstratified with no net magnetic flux -- find that wi…
Three Dimensional MHD Simulation of Circumbinary Accretion Disks -2. Net Accretion Rate
Ji-Ming Shi, Julian H. Krolik
When an accretion disk surrounds a binary rotating in the same sense, the binary exerts strong torques on the gas. Analytic work in the 1D approximation indicated that these torque…
Hydrodynamics of Embedded Planets' First Atmospheres. II. A Rapid Recycling of Atmospheric Gas
Chris W. Ormel, Ji-Ming Shi, Rolf Kuiper
Following Paper I we investigate the properties of atmospheres that form around small protoplanets embedded in a protoplanetary disc by conducting hydrodynamical simulations. These…
Hydrodynamics of Embedded Planets' First Atmospheres. I. A Centrifugal Growth Barrier for 2D Flows
Chris W. Ormel, Rolf Kuiper, Ji-Ming Shi
In the core accretion paradigm of planet formation, gas giants only form a massive atmosphere after their progenitors exceeded a threshold mass: the critical core mass. Most (exo)p…
Gravito-Turbulent Disks in 3D: Turbulent Velocities vs. Depth
Ji-Ming Shi, Eugene Chiang
Characterizing turbulence in protoplanetary disks is crucial for understanding how they accrete and spawn planets. Recent measurements of spectral line broadening promise to diagno…
How Empty are Disk Gaps Opened by Giant Planets?
Jeffrey Fung, Ji-Ming Shi, Eugene Chiang
Gap clearing by giant planets has been proposed to explain the optically thin cavities observed in many protoplanetary disks. How much material remains in the gap determines not on…
From Dust to Planetesimals: Criteria for Gravitational Instability of Small Particles in Gas
Ji-Ming Shi, Eugene Chiang
Dust particles sediment toward the midplanes of protoplanetary disks, forming dust-rich sublayers encased in gas. What densities must the particle sublayer attain before it can fra…
Three Dimensional MHD Simulation of Circumbinary Accretion Disks: Disk Structures and Angular Momentum Transport
Ji-Ming Shi, Julian H. Krolik, Stephen H. Lubow +1
We present the first three-dimensional magnetohydrodynamic (MHD) simulations of a circumbinary disk surrounding an equal mass binary. The binary maintains a fixed circular orbit of…
What Is The Numerically Converged Amplitude of MHD Turbulence in Stratified Shearing Boxes?
Ji-Ming Shi, Julian H. Krolik, Shigenobu Hirose
We study the properties of the turbulence driven by the magnetorotational instability (MRI) in a stratified shearing box with outflow boundary conditions and an equation of state d…
Radiation Pressure Supported AGN Tori with Hard X-Ray and Stellar Heating
Jiming Shi, Julian H. Krolik
The dynamics and structure of toroidal obscuration around AGN remain uncertain and controversial. In this paper we extend earlier work on the dynamical role of infrared radiation p…