Charged fluid nonconducting toroidal structures orbiting a Schwarzschild black hole immersed in a split-monopole magnetic field

Stuchlík, Zdeněk; Blaschke, Martin; Kovář, Jiří; Slaný, Petr

doi:10.1103/physrevd.105.103012

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…The motion of charged test particles in the background of magnetized black holes or neutron stars is of high astrophysical relevance, as it can explain the creation of ultrahighenergy particles around supermassive black holes in galactic nuclei by the magnetic Penrose process or help in understanding high-frequency quasiperiodic oscillations observed in some microquasars [1][2][3]. Furthermore, it is a basis for understanding the complex Blandford-Znajek process of energy extraction from rotating black holes [4,5] or models of toroidal nonconducting or magnetohydrodynamical structures [6,7].…”

Section: Introductionmentioning

confidence: 99%

On the Role of the Tail Term in Electromagnetic Radiation Reaction

Stuchlík,

Kološ,

Tursunov

et al. 2024

Universe

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In a recent study devoted to the influence of electromagnetic radiation reaction on the motion of radiating charged particles in magnetized black hole spacetimes the authors claim that the tail term cannot be neglected in the complete DeWitt–Brehme equation, putting into doubt the previous papers where such an approximation was used. Here, we demonstrate by using simple dimensional arguments that such a statement is misleading in many astrophysically relevant situations. In the case of relativistic electrons moving around a stellar-mass black hole, the tail term is ignorable if a magnetic field of at least a few Gauss is present.On the other hand, in different situations, the tail term can be relevant, as demonstrated in the case of orbital widening, where it can even amplify the effect.

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Section: Introductionmentioning

confidence: 99%

On the Role of the Tail Term in Electromagnetic Radiation Reaction

Stuchlík,

Kološ,

Tursunov

et al. 2024

Universe

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Charged particles motion and quasiperiodic oscillation in Simpson–Visser spacetime in the presence of external magnetic fields

Vrba,

Rayimbaev,

Stuchlik

et al. 2023

Eur. Phys. J. C

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The present work is devoted to the study of the dynamics of charged particles around Simpson–Visser black holes (with the length parameter $$ l\le $$ l ≤ 2) and wormholes ($$l>2$$ l > 2 ) immersed in an external asymptotically uniform magnetic field. To do this, first, we solve the Maxwell equation for 4-potentials of the electromagnetic field and show that the difference between the numerical solution and Wald’s solution is small enough to neglect it, which may allow us to use the solution obtained by Wald. We also study fundamental frequencies of in the vertical and radial oscillations of charged particles around circular stable orbits around the magnetized black hole. The effects of the magnetic interaction and length parameters on the fundamental frequencies. We investigate the quasiperiodic oscillations (QPOs) around the black hole in relativistic precession and epicyclic resonance models. It is also shown that the combined effects of magnetic interaction for negatively charged particles and length parameters can mimic the spacetime effects of the Schwarzschild black hole compensating for their effects, as well as the spin of rotating Kerr black holes. The distance between an orbit where a QPO is generated with the ratio of upper and lower frequencies 3: 2 and innermost stable circular orbits is also studied. It is found that the QPO orbits are very close to ISCO in the RP model at $$l<2$$ l < 2 . This implies that the obtained result helps to determine the ISCO around black holes. We also study the applications of observed QPOs around stellar-mass black holes in microquasars and supermassive black holes.

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Charged fluid nonconducting toroidal structures orbiting a Schwarzschild black hole immersed in a split-monopole magnetic field

Cited by 2 publications

References 33 publications

On the Role of the Tail Term in Electromagnetic Radiation Reaction

On the Role of the Tail Term in Electromagnetic Radiation Reaction

Charged particles motion and quasiperiodic oscillation in Simpson–Visser spacetime in the presence of external magnetic fields

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