A massive binary black-hole system in OJ 287 and a test of general relativity

  title={A massive binary black-hole system in OJ 287 and a test of general relativity},
  author={M. Valtonen and H. Lehto and K. Nilsson and J. Heidt and L. Takalo and A. Sillanpaeae and C. Villforth and M. Kidger and G. Poyner and T. Pursimo and S. Zola and J. Wu and X. Zhou and K. Sadakane and M. Dr{\'o}żdż and D. Kozieł and D. Marchev and W. Ogłoza and C. Porowski and M. Siwak and G. Stachowski and M. Winiarski and V.-P. Hentunen and M. Nissinen and A. Liakos and S. Dogru},
  • M. Valtonen, H. Lehto, +23 authors S. Dogru
  • Published 2008
  • Physics, Medicine
  • Nature
  • Tests of Einstein’s general theory of relativity have mostly been carried out in weak gravitational fields where the space-time curvature effects are first-order deviations from Newton’s theory. Binary pulsars provide a means of probing the strong gravitational field around a neutron star, but strong-field effects may be best tested in systems containing black holes. Here we report such a test in a close binary system of two candidate black holes in the quasar OJ 287. This quasar shows quasi… CONTINUE READING
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