Energy spectrum of ultra high energy cosmic rays accelerated by rotating supermassive black holes

Proceedings of RAGtime / Energy spectrum of ultra high energy cosmic rays accelerated by rotating supermassive black holes

Energy spectrum of ultra high energy cosmic rays accelerated by rotating supermassive black holes

Authors

Martin Kološ and Arman Tursunov

Abstract

We explore the acceleration of charged particles in the combined gravitational and magnetic field around a rotating Kerr black hole. We derive the energy spectrum for ionized particles escaping to infinity, which can serve as injection spectrum for observed ultra-high energy cosmic rays.

Keywords

Black hole – resonances – particle dynamics – magnetic field

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References

  1. Dadhich, N., Tursunov, A., Ahmedov, B. and Stuchlík, Z. (2018), The distinguishing signature of magnetic Penrose process, Monthly Notices of the Royal Astronomical Society , 478(1), pp. L89–L94, arXiv: 1804.09679.
  2. Frolov, V. P. and Shoom, A. A. (2010), Motion of charged particles near a weakly magnetized Schwarzschild black hole, Phys. Rev. D , 82(8), 084034, arXiv: 1008.2985.
  3. Kardashev, N. S. (1995), Cosmic supercollider, Monthly Notices of the Royal Astronomical Society, 276(2), pp. 515–520.
  4. Komissarov, S. S. (2022), Electrically charged black holes and the Blandford-Znajek mechanism, Monthly Notices of the Royal Astronomical Society , 512(2), pp. 2798–2805, arXiv: 2108.08161.
  5. Penrose, R. and Floyd, R. M. (1971), Extraction of Rotational Energy from a Black Hole, Nature Physical Science, 229(6), pp. 177–179.
  6. Rieger, F. M. (2022), Active Galactic Nuclei as Potential Sources of Ultra-High Energy Cosmic Rays, Universe, 8(11), p. 607, arXiv: 2211.12202.
  7. Stuchlík, Z. and Kološ, M. (2016), Acceleration of the charged particles due to chaotic scattering in the combined black hole gravitational field and asymptotically uniform magnetic field, European Physical Journal C, 76, 32, arXiv: 1511.02936.
  8. Tursunov, A. and Dadhich, N. (2019), Fifty Years of Energy Extraction from Rotating Black Hole: Revisiting Magnetic Penrose Process, Universe, 5(5), p. 125, arXiv: 1905.05321.
  9. 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.
  10. Tursunov, A., Kološ, M. and Stuchlík, Z. (2022), Constraints on Cosmic Ray Acceleration Capabilities of Black Holes in X-ray Binaries and Active Galactic Nuclei, Symmetry, 14(3), p. 482.
  11. 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.
  12. Tursunov, A., Stuchlík, Z., Kološ, M., Dadhich, N. and Ahmedov, B. (2020), Supermassive Black Holes as Possible Sources of Ultrahigh-energy Cosmic Rays, The Astrophysical Journal , 895(1), 14, arXiv: 2004.07907.
  13. Wagh, S. M., Dhurandhar, S. V. and Dadhich, N. (1985), Revival of the Penrose Process for Astrophysical Applications, The Astrophysical Journal , 290, p. 12.
  14. Wald, R. M. (1974), Black hole in a uniform magnetic field, Phys. Rev. D , 10, pp. 1680–1685.
  15. 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.