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Journal Article

Dynamics of oscillating magnetized relativistic tori around a Schwarzschild black hole

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Rezzolla,  L.
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Citation

Montero, P. J., Font, J. A., Rezzolla, L., & Zanotti, O. (2007). Dynamics of oscillating magnetized relativistic tori around a Schwarzschild black hole. Journal of Physics: Conference Series, 66(1): 012061. doi:10.1088/1742-6596/66/1/012061.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-C3A0-7
Abstract
We present a comprehensive numerical study of the dynamics of magnetized relativistic axisymmetric tori orbiting in the background spacetime of a Schwarzschild black hole. The tori are modeled as having a purely toroidal magnetic field and a constant distribution of the specific angular momentum. Following previous investigations of tori in a purely hydrodynamical context, the dynamics of these objects has been studied upon the introduction of a perturbation which, for the values of the magnetic field considered here, triggers quasi-periodic oscillations (QPOs) lasting tens of orbital periods. As in the hydrodynamical case, the spectral distribution of the eigenfrequencies shows the presence of a fundamental p-mode and of overtones in a harmonic ratio: 2 : 3 : .... We comment on the implications of these results on the phenomenology observed for the QPOs in low-mass X-ray binaries containing a black hole candidate.