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The Scientific World Journal
Volume 2013, Article ID 204315, 4 pages
http://dx.doi.org/10.1155/2013/204315
Research Article

A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates

1Arnold Sommerfeld Center for Theoretical Physics, Ludwig Maximilians University Munich, 80333 Munich, Germany
2Department of Physics, Fudan University, Shanghai 200433, China

Received 18 April 2013; Accepted 30 May 2013

Academic Editors: V. Beckmann, S. Covino, and V. Van Elewyck

Copyright © 2013 Cosimo Bambi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. E. Poisson, A Relativist's Toolkit: The Mathematics of Black-Hole Mechanics, Cambridge University Press, Cambridge, UK, 2004.
  2. A. Ashtekar and M. Bojowald, “Black hole evaporation: a paradigm,” Classical and Quantum Gravity, vol. 22, no. 16, article 3349, 2005. View at Publisher · View at Google Scholar
  3. A. Ashtekar and M. Bojowald, “Quantum geometry and the Schwarzschild singularity,” Classical and Quantum Gravity, vol. 23, no. 2, article 391, 2006. View at Publisher · View at Google Scholar
  4. S. W. Hawking, “Information loss in black holes,” Physical Review D, vol. 72, no. 8, Article ID 084013, 4 pages, 2005. View at Publisher · View at Google Scholar
  5. R. Narayan, “Black holes in astrophysics,” New Journal of Physics, vol. 7, no. 1, article 199, 2005. View at Publisher · View at Google Scholar
  6. C. E. Rhoades and R. Ruffini, “Maximum mass of a neutron star,” Physical Review Letters, vol. 32, no. 6, pp. 324–327, 1974. View at Publisher · View at Google Scholar
  7. V. Kalogera and G. Baym, “The maximum mass of a neutron star,” The Astrophysical Journal Letters, vol. 470, no. 1, article L61, 1996. View at Publisher · View at Google Scholar
  8. E. Maoz, “Dynamical constraints on alternatives to supermassive black holes in galactic nuclei,” The Astrophysical Journal Letters, vol. 494, no. 2, article L181, 1998. View at Publisher · View at Google Scholar
  9. J. E. McClintock, R. Narayan, and G. B. Rybicki, “On the lack of thermal emission from the quiescent black hole XTE J1118+480: evidence for the event horizon,” The Astrophysical Journal, vol. 615, no. 1, article 402, 2004. View at Publisher · View at Google Scholar
  10. R. Narayan and J. E. McClintock, “Advection-dominated accretion and the black hole event horizon,” New Astronomy Reviews, vol. 51, no. 10–12, pp. 733–751, 2008. View at Publisher · View at Google Scholar
  11. R. Narayan and J. S. Heyl, “On the lack of type I X-ray bursts in black hole X-ray binaries: evidence for the event horizon?” The Astrophysical Journal Letters, vol. 574, no. 2, article L139, 2002. View at Publisher · View at Google Scholar
  12. A. E. Broderick and R. Narayan, “Where are all the gravastars? Limits upon the gravastar model from accreting black holes,” Classical and Quantum Gravity, vol. 24, no. 3, article 659, 2007. View at Publisher · View at Google Scholar
  13. A. E. Broderick, A. Loeb, and R. Narayan, “The event horizon of sagittarius A*,” The Astrophysical Journal, vol. 701, no. 2, article 1357, 2009. View at Publisher · View at Google Scholar
  14. M. A. Abramowicz, W. Kluzniak, and J. P. Lasota, “No observational proof of the black-hole event-horizon,” Astronomy and Astrophysics, vol. 396, no. 3, pp. L31–L34, 2002. View at Publisher · View at Google Scholar
  15. G. Dvali and C. Gomez, “Black hole's quantum N-portrait,” http://arxiv.org/abs/1112.3359.
  16. J. L. Friedman, “Ergosphere instability,” Communications in Mathematical Physics, vol. 63, no. 3, pp. 243–255, 1978. View at Publisher · View at Google Scholar
  17. H. Sato and K. I. Maeda, “Instability of a quantum field in the curved space-time of a rotating star,” Progress of Theoretical Physics, vol. 59, no. 4, pp. 1173–1187, 1978. View at Publisher · View at Google Scholar
  18. N. Comins and B. F. Schutz, “On the ergoregion instability,” Proceedings of the Royal Society A, vol. 364, no. 1717, pp. 211–226, 1978. View at Publisher · View at Google Scholar
  19. S. Yoshida and Y. Eriguchi, “Ergoregion instability revisited—a new and general method for numerical analysis of stability,” Monthly Notices of the Royal Astronomical Society, vol. 282, no. 2, pp. 580–586, 1996. View at Publisher · View at Google Scholar
  20. P. Pani, E. Barausse, E. Berti, and V. Cardoso, “Gravitational instabilities of superspinars,” Physical Review D, vol. 82, no. 4, Article ID 044009, 15 pages, 2010. View at Publisher · View at Google Scholar
  21. V. Cardoso, P. Pani, M. Cadoni, and M. Cavaglia, “Ergoregion instability of ultracompact astrophysical objects,” Physical Review D, vol. 77, no. 12, Article ID 124044, 15 pages, 2008. View at Publisher · View at Google Scholar
  22. C. B. M. H. Chirenti and L. Rezzolla, “Ergoregion instability in rotating gravastars,” Physical Review D, vol. 78, no. 8, Article ID 084011, 11 pages, 2008. View at Publisher · View at Google Scholar
  23. J. E. McClintock, R. Shafee, R. Narayan, R. A. Remillard, S. W. Davis, and L. X. Li, “The spin of the near-extreme Kerr black hole GRS 1915+105,” The Astrophysical Journal, vol. 652, no. 1, article 518, 2006. View at Publisher · View at Google Scholar
  24. L. W. Brenneman and C. S. Reynolds, “Constraining black hole spin via X-ray spectroscopy,” The Astrophysical Journal, vol. 652, no. 2, article 1028, 2006. View at Publisher · View at Google Scholar
  25. L. W. Brenneman, C. S. Reynolds, M. A. Nowak et al., “The spin of the supermassive black hole in NGC 3783,” The Astrophysical Journal, vol. 736, no. 2, article 103, 2011. View at Publisher · View at Google Scholar
  26. R. Narayan and J. E. McClintock, “Observational evidence for a correlation between jet power and black hole spin,” Monthly Notices of the Royal Astronomical Society, vol. 419, no. 1, pp. L69–L73, 2012. View at Publisher · View at Google Scholar
  27. C. Bambi, “Testing the Kerr nature of stellar-mass black hole candidates by combining the continuum-fitting method and the power estimate of transient ballistic jets,” Physical Review D, vol. 85, no. 4, Article ID 043002, 8 pages, 2012. View at Publisher · View at Google Scholar
  28. J. M. Wang, Y. M. Chen, L. C. Ho, and R. J. McLure, “Evidence for rapidly spinning black holes in quasars,” The Astrophysical Journal Letters, vol. 642, no. 2, article L111, 2006. View at Publisher · View at Google Scholar
  29. S. W. Davis and A. Laor, “The radiative efficiency of accretion flows in individual active galactic nuclei,” The Astrophysical Journal, vol. 728, no. 2, article 98, 2011. View at Publisher · View at Google Scholar
  30. C. Bambi, “Constraint on the quadrupole moment of super-massive black hole candidates from the estimate of the mean radiative efficiency of AGN,” Physical Review D, vol. 83, no. 10, Article ID 103003, 4 pages, 2011. View at Publisher · View at Google Scholar
  31. C. Bambi, “Towards the use of the most massive black hole candidates in active galactic nuclei to test the Kerr paradigm,” Physical Review D, vol. 85, no. 4, Article ID 043001, 11 pages, 2012. View at Publisher · View at Google Scholar
  32. C. Bambi, “Testing the Kerr black hole hypothesis,” Modern Physics Letters A, vol. 26, no. 33, p. 2453, 2011. View at Publisher · View at Google Scholar
  33. S. Mukohyama, “Is the brick-wall model unstable for a rotating background?” Physical Review D, vol. 61, no. 12, Article ID 124021, 9 pages, 2000. View at Publisher · View at Google Scholar