Parametric instability in a free-evolving warped protoplanetary disc
@article{Deng2020ParametricII, title={Parametric instability in a free-evolving warped protoplanetary disc}, author={Hongping Deng and Gordon I. Ogilvie and Lucio Mayer}, journal={Monthly Notices of the Royal Astronomical Society}, year={2020}, volume={500}, pages={4248-4256} }
Warped accretion discs of low viscosity are prone to hydrodynamic instability due to parametric resonance of inertial waves as confirmed by local simulations. Global simulations of warped discs, using either smoothed particle hydrodynamics (SPH) or grid-based codes, are ubiquitous but no such instability has been seen. Here we utilize a hybrid Godunov-type Lagrangian method to study parametric instability in global simulations of warped Keplerian discs at unprecedentedly high resolution (up toβ¦Β
Figures from this paper
3 Citations
Lecture notes on accretion disk physics
- Physics
- 2022
These notes introduce and review some of the physical principles underlying the theory of astrophysical accretion, emphasizing the central roles of angular momentum transport, angular momentum loss,β¦
Non-linear resonant torus oscillations as a model of Keplerian disc warp dynamics
- PhysicsMonthly Notices of the Royal Astronomical Society
- 2021
Observations of distorted discs have highlighted the ubiquity of warps in a variety of astrophysical contexts. This has been complemented by theoretical efforts to understand the dynamics of warpβ¦
On the Dynamics of Low-viscosity Warped Disks around Black Holes
- PhysicsThe Astrophysical Journal
- 2021
Accretion disks around black holes can become warped by LenseβThirring precession. When the disk viscosity is sufficiently small, such that the warp propagates as a wave, then steady-state solutionsβ¦
References
SHOWING 1-10 OF 64 REFERENCES
HYDRODYNAMIC SIMULATIONS OF PROPAGATING WARPS AND BENDING WAVES IN ACCRETION DISCS
- Physics
- 1999
ABSTRACT We present the results of a study of propagating warp or bending waves in accretiondiscs. Three dimensional hydrodynamic simulations were performed using SPH, andthe results are comparedβ¦
Hydrodynamic instability in warped astrophysical discs
- Physics, Geology
- 2013
Warped astrophysical discs are usually treated as laminar viscous flows, which have anomalous properties when the disc is nearly Keplerian and the viscosity is small: fast horizontal shearing motionsβ¦
Local and global dynamics of warped astrophysical discs
- Physics
- 2013
Astrophysical discs are warped whenever a misalignment is present in the system, or when a flat disc is made unstable by external forces. The evolution of the shape and mass distribution of a warpedβ¦
Local numerical simulations of warped discs
- PhysicsMonthly Notices of the Royal Astronomical Society
- 2018
We study the hydrodynamical stability of the laminar flows associated with warped astrophysical discs using numerical simulations of warped shearing boxes. We recover linear growth rates reportedβ¦
Linear and non-linear theory of a parametric instability of hydrodynamic warps in Keplerian discs
- Physics
- 2000
We consider the stability of warping modes in Keplerian discs. We find them to be parametrically unstable using two lines of attack, one based on three-mode couplings and the other on Floquet theory.β¦
Apsidal precession, disc breaking and viscosity in warped discs
- Physics
- 2016
We demonstrate the importance of general relativistic apsidal precession in warped black hole accretion discs by comparing three-dimensional smoothed particle hydrodynamic simulations in which thisβ¦
Wave-like warp propagation in circumbinary discs β I. Analytic theory and numerical simulations
- Physics
- 2013
In this paper we analyse the propagation of warps in protostellar circumbinary discs. We use these systems as a test environment in which to study warp propagation in the bendingwave regime, with theβ¦
The non-linear fluid dynamics of a warped accretion disc
- Physics
- 1998
The dynamics of a viscous accretion disc subject to a slowly varying warp of large amplitude is considered. Attention is restricted to discs in which self-gravitation is negligible, and to theβ¦
Global Simulations of Self-gravitating Magnetized Protoplanetary Disks
- Physics, GeologyThe Astrophysical Journal
- 2020
In the early stages of a protoplanetary disk, turbulence generated by gravitational instability (GI) should feature significantly in the diskβs evolution. At the same time, the disk may beβ¦
Convergence of the Critical Cooling Rate for Protoplanetary Disk Fragmentation Achieved: The Key Role of Numerical Dissipation of Angular Momentum
- Physics
- 2017
We carry out simulations of gravitationally unstable disks using smoothed particle hydrodynamics (SPH) and the novel Lagrangian meshless finite mass (MFM) scheme in the GIZMO code. Our aim is toβ¦