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An intermediate-mass black hole of over 500 solar masses in the galaxy ESO 243-49

Nature volume 460, pages 7375 (02 July 2009) | Download Citation

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Abstract

Ultraluminous X-ray sources are extragalactic objects located outside the nucleus of the host galaxy with bolometric luminosities1 exceeding 1039 erg s-1. These extreme luminosities—if the emission is isotropic and below the theoretical (Eddington) limit, where the radiation pressure is balanced by the gravitational pressure—imply the presence of an accreting black hole with a mass of 102–105 solar masses (). The existence of such intermediate-mass black holes is in dispute, and though many candidates have been proposed, none are widely accepted as definitive. Here we report the detection of a variable X-ray source with a maximum 0.2–10 keV luminosity of up to 1.1 × 1042 erg s-1 in the edge-on spiral galaxy ESO 243-49, with an implied conservative lower limit for the mass of the black hole of 500.

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References

  1. 1.

    X-ray observations of ultraluminous X-ray sources. Astrophys. Space Sci. 311, 203–212 (2007)

  2. 2.

    , , & X-ray spectroscopic evidence for intermediate-mass black holes: cool accretion disks in two ultraluminous X-ray sources. Astrophys. J. 585, L37–L40 (2003)

  3. 3.

    et al. Weighing the black holes in ultraluminous X-ray sources through timing. Mon. Not. R. Astron. Soc. 387, 1707–1711 (2008)

  4. 4.

    , & Gemini and Hubble space telescope evidence for an intermediate-mass black hole in ω Centauri. Astrophys. J. 676, 1008–1015 (2008)

  5. 5.

    & Formation of ω Centauri from an ancient nucleated dwarf galaxy in the young Galactic disc. Mon. Not. R. Astron. Soc. 346, L11–L15 (2003)

  6. 6.

    & An ultraluminous supersoft X-ray source in M81: an intermediate-mass black hole? Astrophys. J. 674, L73–L76 (2008)

  7. 7.

    Accretion rates and beaming in ultraluminous X-ray sources. Mon. Not. R. Astron. Soc. 385, L113–L115 (2008)

  8. 8.

    in Compact Stellar X-ray Sources (eds Lewin, W. & van der Klis, M.) 381–419 (Cambridge University Press, 2006)

  9. 9.

    et al. The XMM-Newton serendipitous survey. VI. The second XMM-Newton serendipitous source catalogue. Astron. Astrophys. 493, 339–373 (2009)

  10. 10.

    et al. The phoenix deep survey: spectroscopic catalog. Astrophys. J. 624, 135–154 (2005)

  11. 11.

    et al. Have we detected the most luminous ULX so far? Mon. Not. R. Astron. Soc. 373, L1–L5 (2006)

  12. 12.

    et al. Line searches in Swift X-ray spectra. Astrophys. J. 679, 587–606 (2008)

  13. 13.

    X-ray astronomy of stellar coronae. Astron. Astrophys. Rev. 12, 71–237 (2004)

  14. 14.

    & in Supernovae and Gamma-Ray Bursters (ed. Weiller, K.) 91–111 (Springer, 2003)

  15. 15.

    , & The complete set of ASCA X-ray observations of non-magnetic cataclysmic variables. Mon. Not. R. Astron. Soc. 357, 626–644 (2005)

  16. 16.

    et al. XMM-Newton observations of the cataclysmic variable GW Librae. Astron. J. 134, 1503–1507 (2007)

  17. 17.

    Constraining the neutron star equation of state using quiescent low-mass X-ray binaries. AIP Conf. Proc. 983, 519–526 (2008)

  18. 18.

    , & Modelling the behaviour of accretion flows in X-ray binaries. Astron. Astrophys. Rev. 15, 1–66 (2007)

  19. 19.

    et al. in Blazar Astrophysics with BeppoSAX and Other Observatories (eds Giommi, P., Massaro, E. & Palumbo, G.) 63–99 (ESA-ESRIN, 2002)

  20. 20.

    , & ROXA: a new multi-frequency large sample of blazars selected with SDSS and 2dF optical spectroscopy. Astron. Astrophys. 472, 669–704 (2007)

  21. 21.

    , , & Testing the paradigm that ultra-luminous X-ray sources as a class represent accreting intermediate-mass black holes. Astrophys. J. 687, 471–487 (2008)

  22. 22.

    , , & Radio and X-ray properties of relativistic beaming models for ultraluminous X-ray sources. Mon. Not. R. Astron. Soc. 372, 630–638 (2006)

  23. 23.

    , & Relativistic effects in superluminal jets and neutron star winds. Astrophys. J. 361, 470–492 (1990)

  24. 24.

    Super-Eddington fluxes from thin accretion disks? Astrophys. J. 568, L97–L100 (2002)

  25. 25.

    et al. The Leiden/Argentine/Bonn (LAB) survey of Galactic HI. Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections. Astron. Astrophys. 440, 775–782 (2005)

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Acknowledgements

We thank N. Schartel for granting an observation under the XMM-Newton project scientist discretionary time programme. We thank R. Belmont, A. King, J.-P. Lasota, K. Mukai, T. Roberts, S. Rosen, S. Sembay and M. Watson for discussions. S.A.F. acknowledges funding from the CNES. S.A.F. and O.G. acknowledge STFC funding. This work made use of the 2XMM Serendipitous Source Catalogue constructed by the XMM-Newton Survey Science Centre on behalf of ESA. We thank the Swift team for performing a TOO observation that provided justification for an additional observation with XMM-Newton. This work was based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA.

Author information

Author notes

    • Sean A. Farrell

    Present address: Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK.

Affiliations

  1. Université de Toulouse, UPS, CESR, 9 Avenue du Colonel Roche, F-31028 Toulouse Cedex 9, France

    • Sean A. Farrell
    • , Natalie A. Webb
    • , Didier Barret
    •  & Joana M. Rodrigues
  2. CNRS, UMR5187, F-31028 Toulouse, France

    • Sean A. Farrell
    • , Natalie A. Webb
    • , Didier Barret
    •  & Joana M. Rodrigues
  3. Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK

    • Olivier Godet

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Corresponding authors

Correspondence to Sean A. Farrell or Natalie A. Webb.

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https://doi.org/10.1038/nature08083

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