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arXiv · 1510.07414

Quasi-periodic oscillations from relativistic hydrodynamical slender tori

B. Mishra·F. H. Vincent·A. Manousakis·P. C. Fragile·T. Paumard·W. Kluźniak
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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.

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B. Mishra, F. H. Vincent, A. Manousakis, P. C. Fragile, T. Paumard, W. Kluźniak. 2015-10-26. Quasi-periodic oscillations from relativistic hydrodynamical slender tori. https://doi.org/10.1093/mnras%2Fstx299

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