Quasi-harmonic oscillatory motion of charged particles around a Schwarzschild black hole immersed in a uniform magnetic field

By M. Kološ, Zdenek Stuchlík, A. Tursunov. 2015

176 citations recorded by the source corpus.

In order to test the role of large-scale magnetic fields in quasi-periodic oscillation phenomena observed in microquasars, we study the oscillatory motion of charged particles in the vicinity of a Schwarzschild black hole immersed into an external asymptotically uniform magnetic field. We determine the fundamental frequencies of small harmonic oscillations of charged test particles around stable circular orbits in the equatorial plane of a magnetized black hole, and discuss the radial profiles of frequencies of the radial and latitudinal harmonic oscillations in dependence on the mass of the black hole and the strength of the magnetic field. We demonstrate that assuming relevance of resonant phenomena of the radial and latitudinal oscillations of charged particles at their frequency ratio 3 : 2 ?> , the oscillatory frequencies of charged particles can be well related to the frequencies of the twin high-frequency quasi-periodic oscillations observed in the microquasars GRS 1915+105, XTE 1550–564 and GRO 1655–40.

View Paper: https://www.semanticscholar.org/paper/222afc11882c5c64d80e3454ff3a22ceb08aaf28

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1. M. Kološ
2. Zdenek Stuchlík
3. J. Kovář
4. P. Slaný
5. A. Tursunov

Citations in the corpus

• Influence of Cosmic Repulsion and Magnetic Fields on Accretion Disks Rotating around Kerr Black Holes (2020, methodology): “The difference between E+ and E− can be large for large values of the magnetic parameter B, representing the charged particles accelerated up to ultrarelativistic velocities [31,33].”