Mass estimate of the XTE J1650-500 black hole from the Extended Orbital Resonance Model for high-frequency QPOs

@article{Slan2008MassEO,
  title={Mass estimate of the XTE J1650-500 black hole from the Extended Orbital Resonance Model for high-frequency QPOs},
  author={Petr Slan{\'y} and Zdeněk Stuchl{\'i}k},
  journal={Astronomy and Astrophysics},
  year={2008},
  volume={492},
  pages={319-322}
}
Context. XTE J1650-500 is a Galactic black-hole binary system for which at least one high-frequency QPO at 250 Hz was reported. Moreover there are indications that the system harbours a near-extreme Kerr black-hole with a spin a∗ ≃ 0.998 and mass MBH . 7.3 M⊙. Recently it was discovered that the orbital 3-velocity of t est-particle (geodesical) discs orbiting Kerr black holes with the spin a∗ > 0.9953, being analyzed in the locally non-rotating frames, reveals a hump near the marginally stable… 

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