Quasi-periodic oscillations from relativistic hydrodynamical slender tori

Abstract

We simulate an oscillating purely hydrodynamical torus with constant specific angular mo- mentum around a Schwarzschild black hole. The goal is to search for quasi-periodic oscil- lations (QPOs) in the light curve of the torus. The initial torus setup is subjected to radial, vertical and diagonal (combination of radial and vertical) velocity perturbations. The hydro- dynamical simulations are performed using the general relativistic magnetohydrodynamics code Cosmos++ and ray-traced using the GYOTO code. We found that a horizontal velocity perturbation triggers the radial and plus modes, while a vertical velocity perturbation trig- gers the vertical and X modes. The diagonal perturbation gives a combination of the modes triggered in the radial and vertical perturbations.

9 pages, 6 figures, submitted in MNRAS

References in corpus (11)

• X-ray Properties of Black-Hole Binaries
• Light Curves from an MHD Simulation of a Black Hole Accretion Disk
• Accretion-Ejection Instability, MHD Rossby Wave Instability, diskoseismology, and the high-frequency QPO of microquasars
• High-Frequency and Type-C QPOs from Oscillating, Precessing Hot, Thick Flow
• Power density spectra of modes of orbital motion in strongly curved spacetime: obtaining the observable signal
• Oscillations of tori in the pseudo-Newtonian potential
• A model of the steep power law spectra and high-frequency quasi-periodic oscillations in luminous black hole X-ray binaries
• Viscous Driving of Global Oscillations in Accretion Discs Around Black Holes
• Spectral signature of oscillating slender tori surrounding Kerr black holes
• Oscillations of radiation pressure supported tori near black holes
• Quasi-periodic oscillations of perturbed tori

Cited by in corpus (19)

• Puffy accretion disks: sub-Eddington, optically thick, and stable
• The continuous rise of bulges out of galactic disks
• On the observational diagnostics to separate classical and disk-like bulges
• On the wind production from hot accretion flows with different accretion rates
• Epicyclic oscillations in the Hartle-Thorne external geometry
• Breathing Oscillations in a Global Simulation of a Thin Accretion Disk
• Why are classical bulges more common in S0 galaxies than in spiral galaxies?
• Relativistic, Viscous, Radiation Hydrodynamic Simulations of Geometrically Thin Disks. II. Disk Variability
• Age bimodality in the central region of pseudobulges in S0 galaxies
• On the dynamics of tilted black hole-torus systems
• Neutron Star QPOs from Oscillating, Precessing Hot, Thick Flow
• MHD simulations of oscillating cusp-filling tori around neutron stars -- missing upper kHz QPO
• Simple analytic formula relating the mass and spin of accreting compact objects to their rapid X-ray variability
• On one-parametric formula relating the frequencies of twin-peak quasi-periodic oscillations
• The clustering of galaxies with pseudo bulge and classical bulge in the local Universe
• Quasi-periodic oscillations of perturbed tori
• Accretion tori around rotating neutron stars I: Structure, shape and size
• Secular evolution and pseudo-bulges
• Lense-Thirring precession of neutron-star accretion flows: Relativistic versus classical precession