On the dynamics of tilted black hole-torus systems

Abstract

We present results from three-dimensional, numerical relativity simulations of a {\it tilted} black hole-thick accretion disc system. The simulations are analysed using tracer particles in the disc which are advected with the flow. Such tracers, which we employ in these new simulations for the first time, provide a powerful means to analyse in detail the complex dynamics of tilted black hole-torus systems. We show how its use helps to gain insight in the overall dynamics of the system, discussing the origin of the observed black hole precession and the development of a global non-axisymmetric $m=1$ mode in the disc. Our three-dimensional simulations show the presence of quasi-periodic oscillations (QPOs) in the instantaneous accretion rate, with frequencies in a range compatible with those observed in low mass X-ray binaries with either a black hole or a neutron star component. The frequency ratio of the dominant low frequency peak and the first overtone is $o_1/f\sim 1.9$, a frequency ratio not attainable when modelling the QPOs as $p$-mode oscillations in axisymmetric tori.

11 pages, 11 figures, accepted for publication in MNRAS

References in corpus (18)

• Global General Relativistic MHD Simulation of a Tilted Black-Hole Accretion Disk
• Spin Flips and Precession in Black-Hole-Binary Mergers
• Black hole-neutron star mergers at realistic mass ratios: Equation of state and spin orientation effects
• Neutron star-black hole mergers with a nuclear equation of state and neutrino cooling: Dependence in the binary parameters
• The Kozai-Lidov Mechanism in Hydrodynamical Disks
• Introduction to dynamical horizons in numerical relativity
• Black hole-neutron star mergers: effects of the orientation of the black hole spin
• Black hole-neutron star binary merger: Dependence on black hole spin orientation and equations of state
• Gravitational waves from the Papaloizou-Pringle instability in black hole-torus systems
• Fast variability from black-hole binaries
• Gravitational Wave Extraction in Simulations of Rotating Stellar Core Collapse
• Accretion-Ejection Instability, MHD Rossby Wave Instability, diskoseismology, and the high-frequency QPO of microquasars
• Stability of general-relativistic accretion disks
• Corotational Instability of Inertial-Acoustic Modes in Black Hole Accretion Discs and Quasi-Periodic Oscillations
• Dynamical damping terms for symmetry-seeking shift conditions
• Universal scaling of the 3:2 twin-peak quasi-periodic oscillation frequencies with black hole mass and spin revisited
• Spin Evolution of Supermassive Black Holes and Galactic Nuclei
• Papaloizou-Pringle Instability of Magnetized Accretion Tori

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• Rotational properties of hypermassive neutron stars from binary mergers
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• Relativistic Dynamics and Mass Exchange in Binary Black Hole Mini-Disks
• Dynamical ejecta and nucleosynthetic yields from eccentric binary neutron-star mergers
• Tilted Disks around Black Holes: A Numerical Parameter Survey for Spin and Inclination Angle
• On the use of tracer particles in simulations of binary neutron stars
• Non-linear evolutions of magnetised thick discs around black holes: dependence on the initial data
• Self-gravitating magnetised tori around black holes in general relativity
• Self-gravitating disks around rapidly spinning, tilted black holes: General relativistic simulations
• Methods for relativistic self-gravitating fluids: From binary neutron stars to black hole-disks and magnetized rotating neutron stars
• On the dynamics of the torus around the kicked black hole
• Multimessenger Signatures of Tilted, Self-Gravitating, Black Hole Disks