An analytic model of rotating hot spot and kHz QPOs in X-ray binaries
arXiv:astro-ph/0305478 · doi:10.1046/j.1365-8711.2003.06831.x
Abstract
An analytic model of rotating hot spot is proposed to explain kilohertz quasi-periodic oscillations (kHz QPO) in X-ray binaries, which is based on the magnetic coupling (MC) of a rotating black hole (BH) with its surrounding accretion disc. The hot spot in the inner region of the disc is produced by energy transferred from a spinning BH with non-axisymmetric magnetic field. The frequency and energy band of the hot spot turns out to be related to six parameters, by which the strength and the azimuthal angular region of the bulging magnetic field on the BH horizon, the mass and spin of the BH, and the power-law index of the magnetic field varying with the radial coordinate on the disc are described. In addition, the correlation of the fluctuation of the bulging magnetic field with the widths of QPO frequency is discussed.
arXiv comment8 pages, 15 figures
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- Force-Free Magnetosphere of an Accretion Disk -- Black Hole System. I. Schwarzschild Geometry
- Interpreting the High Frequency QPO Power Spectra of Accreting Black Holes
- Forced oscillations in magnetized accretion disks and QPOs
- A General Relativistic Magnetohydrodynamic Model of High Frequency Quasi-periodic Oscillations in Black Hole Low-Mass X-ray Binaries
- A model of rotating hotspots for 3:2 frequency ratio of HFQPOs in black hole X-ray binaries
- Influences of magnetic coupling process on the spectrum of a disk covered by the corona
- Correlation between 3:2 QPO pairs and Jets in Black Hole X-ray Binaries
- Magnetic connection and current distribution in black hole accretion discs
- Association of the 3:2 HFQPO Pairs with the Broad Fe K Line in XTE J1550-564 and GRO J1655-40