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Bringing black holes into focus

Do black holes exist? Observations at the finest resolution so far indicate that only gross deviations in the behaviour of gravity from that predicted by general relativity can invalidate the case that they do.

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  1. Doeleman, S. S. et al. Nature 455, 78–80 (2008).

    Article  ADS  CAS  Google Scholar 

  2. Balick, B. & Brown, R. L. Astrophys. J. 194, 265–270 (1974).

    Article  ADS  Google Scholar 

  3. Shen, Z. Q., Lo, K. Y., Liang, M.-C., Ho, P. T. P. & Zhao, J.-H. Nature 438, 62–64 (2005).

    Article  ADS  CAS  Google Scholar 

  4. Torres, D. F., Capozziello, S. & Lambiase, G. Phys. Rev. D 62, 104012 (2000).

    Article  ADS  Google Scholar 

  5. Krolik, J. H., Hawley, J. F. & Hirose, S. Astrophys. J. 622, 1008–1023 (2005).

    Article  ADS  CAS  Google Scholar 

  6. Reynolds, C. S. Nature 438, 32–33 (2005).

    Article  ADS  CAS  Google Scholar 

  7. King, A. R. & Pringle, J. E. Mon. Not. R. Astron. Soc. 377, L25–L28 (2007).

    Article  ADS  Google Scholar 

  8. Volonteri, M. et al. Astrophys. J. 620, 69–77 (2005).

    Article  ADS  CAS  Google Scholar 

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Reynolds, C. Bringing black holes into focus. Nature 455, 39–40 (2008).

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