Retrograde discs around one component of a binary are unstable to tilting
arXiv:2311.10864 · doi:10.1093/mnrasl/slad172
Abstract
With hydrodynamic simulations we show that a coplanar disc around one component of a binary can be unstable to global tilting when the disc orbits in a retrograde direction relative to the binary. The disc experiences the largest inclination growth relative to the binary orbit in the outermost radii of the disc, closest to the companion. This tilt instability also occurs for test particles. A retrograde disc is much larger than a prograde disc since it is not tidally truncated and instead spreads outwards to the orbit of the companion. The coplanar retrograde disc remains circular while a coplanar prograde disc can become eccentric. We suggest that the inclination instability is due to a disc resonance caused by the interaction of the tilt with the tidal field of the binary. This model is applicable to Be/X-ray binaries in which the Be star disc may be retrograde relative to the binary orbit if there was a sufficiently strong kick from the supernova that formed the neutron star companion. The accretion on to the neutron star and the resulting X-ray outbursts are weaker in the retrograde case compared to the prograde case.
arXiv comment6 pages, 3 figures, accepted for publication in MNRAS
References in corpus (45)
- REBOUND: An open-source multi-purpose N-body code for collisional dynamics
- Modelling Accretion in Protobinary Systems
- The Formation of a Star Cluster: Predicting the Properties of Stars and Brown Dwarfs
- SPLASH: An interactive visualisation tool for Smoothed Particle Hydrodynamics simulations
- IAS15: A fast, adaptive, high-order integrator for gravitational dynamics, accurate to machine precision over a billion orbits
- Smoothed Particle Hydrodynamics and Magnetohydrodynamics
- Be/X-ray binaries
- Phantom: A smoothed particle hydrodynamics and magnetohydrodynamics code for astrophysics
- Binary Black Hole Accretion From a Circumbinary Disk: Gas Dynamics Inside the Central Cavity
- B-Mode contamination by synchrotron emission from 3-years WMAP data
- The tidally induced warping, precession and truncation of accretion discs in binary systems: three-dimensional simulations
- On the diffusive propagation of warps in thin accretion discs
- Observational Implications of Precessing Protostellar Discs and Jets
- On the tilting of protostellar disks by resonant tidal effects
- Viscous Effects on the Interaction between the Coplanar Decretion Disc and the Neutron Star in Be/X-Ray Binaries
- The Be/X-ray transient 4U 0115+63/V635 Cas I. A consistent model
- The Kozai-Lidov Mechanism in Hydrodynamical Disks
- Retrograde Accretion and Merging Supermassive Black Holes
- The Be/X-ray transient 4U 0115+63/V635 Cas: II. Outburst mechanisms
- Giant Outbursts in Be/X-ray Binaries
- A comparison between grid and particle methods on the statistics of driven, supersonic, isothermal turbulence
- Spin period change and the magnetic fields of neutron stars in Be X-ray binaries in the Small Magellanic Cloud
- The Gravo-Magneto Limit Cycle in Accretion Disks
- Simulations of superhumps and superoutbursts
- Tearing up a misaligned accretion disc with a binary companion
- Tidal Torques on Misaligned Disks in Binary Systems
- Stability of prograde and retrograde planets in circular binary systems
- On the physical nature of accretion disc viscosity
- The life cycles of Be viscous decretion discs: fundamental disc parameters of 54 SMC Be stars
- The dynamics of eccentric accretion discs in superhump systems
- Tidal Warping of Be Star Decretion Discs
- Origin of Two Types of X-Ray Outbursts in Be/X-Ray Binaries. I. Accretion Scenarios
- The Kozai-Lidov Mechanism in Hydrodynamical Disks. II. Effects of binary and disk parameters
- The life cycles of Be viscous decretion discs: The case of ω CMa
- Supernova Kicks and Misaligned Be Star Binaries
- Resonances in retrograde circumbinary discs
- Misaligned accretion disc formation via Kozai-Lidov oscillations
- Lidov-Kozai Mechanism in Hydrodynamical Disks: Linear Stability Analysis
- Kozai-Lidov Disc Instability
- Growth and Dissipation of Be Star Discs in Misaligned Binary Systems
- On the neutron star-disc interaction in Be/X-ray binaries
- Origin of Spin-Orbit Misalignments: The Microblazar V4641 Sgr
- The frequency of Kozai-Lidov disc oscillation driven giant outbursts in Be/X-ray binaries
- Type I outbursts in low eccentricity Be/X-ray binaries
- Misaligned snowplough effect and the electromagnetic counterpart to black hole binary mergers