Harmonic oscillations of charged particles around weakly charged black hole

Harmonic oscillations of charged particles around weakly charged black hole

Authors

Bakhtinur Juraev and Arman Tursunov

Abstract

The electric charge of a black hole is frequently neglected in many astrophysical scenarios due to unrealistically large values of the charge necessary for the Reissner-Nordström spacetime metric. Nevertheless, a variety of selective accretion processes could result in a black hole having a gravitationally weak electric charge. Thus, the motion of charged particles can be influenced by a combined effect of gravitational attraction and electrostatic interaction, which can be attractive or repulsive. This can lead to the existence of certain observational patterns in the non-thermal spectra of astrophysical black holes. In the present work, we study the harmonic oscillations of charged particles around a weakly charged black hole

Keywords

Black hole – electric charge – harmonic oscillations

PDF file here

References

  1. Araya, I. J., Padilla, N. D., Rubio, M. E., Sureda, J., Magaña, J. and Osorio, L. (2023), Dark matter from primordial black holes would hold charge, Journal of Cosmology and Astroparticle Physics , 2023(2), 030, arXiv: 2207.05829.
  2. Kološ, M., Tursunov, A. and Stuchlík, Z. (2017), Possible signature of the magnetic fields related to quasi-periodic oscillations observed in microquasars, European Physical Journal C, 77, 860, arXiv: 1707.02224.
  3. Kološ, M., Stuchlík, Z. and Tursunov, A. (2015), Quasi-harmonic oscillatory motion of charged particles around a Schwarzschild black hole immersed in a uniform magnetic field, Classical and Quantum Gravity, 32(16), 165009, arXiv: 1506.06799.
  4. Pugliese, D., Quevedo, H. and Ruffini, R. (2011), Motion of charged test particles in Reissner-Nordström spacetime, Phys. Rev. D , 83(10), 104052, arXiv: 1103.1807.
  5. Tursunov, A., Juraev, B., Stuchlík, Z. and Kološ, M. (2021), Electric Penrose process: High-energy acceleration of ionized particles by nonrotating weakly charged black hole, Phys. Rev. D , 104(8), 084099, arXiv: 2109.10288.
  6. Tursunov, A., Stuchlík, Z. and Kološ, M. (2016), Circular orbits and related quasi-harmonic oscillatory motion of charged particles around weakly magnetized rotating black holes, Phys. Rev. D, 93(8), 084012, arXiv: 1603.07264.
  7. Tursunov, A. A. and Kološ, M. (2018), Constraints on Mass, Spin and Magnetic Field of Microquasar H 1743-322 from Observations of QPOs, Physics of Atomic Nuclei, 81(2), pp. 279–282, arXiv: 1803.08144.
  8. Wald, R. M. (1974), Black hole in a uniform magnetic field, Phys. Rev. D , 10, pp. 1680–1685.
  9. Zajacek, M. and Tursunov, A. (2019), The Electric Charge of Black Holes: Is It Really Always Negligible, The Observatory, 139, pp. 231–236, arXiv: 1904.04654.
  10. Zajaček, M., Tursunov, A., Eckart, A. and Britzen, S. (2018), On the charge of the Galactic centre black hole, Monthly Notices of the Royal Astronomical Society , 480(4), pp. 4408–4423, arXiv: 1808.07327.