Cygnus X-1 contains a 21–solar mass black hole—Implications for massive star winds

  title={Cygnus X-1 contains a 21–solar mass black hole—Implications for massive star winds},
  author={James C. A. Miller-Jones and Arash Bahramian and Jerome A. Orosz and Ilya Mandel and Lijun Gou and Thomas J. Maccarone and Coenraad J. Neijssel and Xueshan Zhao and Jan M. Ziolkowski and Mark J. Reid and Phil Uttley and Xueying Zheng and Do-young Byun and Richard Dodson and Victoria Grinberg and Taehyun Jung and Jeong-Sook Kim and Benito Marcote and Sera B. Markoff and Mar{\'i}a J. Rioja and Anthony P. Rushton and David M. Russell and Gregory R. Sivakoff and Alexandra J. Tetarenko and Valeriu Tudose and Joern Wilms},
  pages={1046 - 1049}
A heavy black hole in an x-ray binary If a black hole interacts with a binary companion star, the system emits x-rays and can form a radio jet. The masses of black holes in these x-ray binaries are all lower than those detected using gravitational waves, challenging models of black hole formation from massive stars. Miller-Jones et al. used radio astrometry to refine the distance to Cygnus X-1, a well-studied x-ray binary. They found a larger distance than previous estimates, raising the mass… 

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Polarized x-rays constrain the disk-jet geometry in the black hole x-ray binary Cygnus X-1

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  • M. Mapelli
  • Physics
    Handbook of Gravitational Wave Astronomy
  • 2021
These are exciting times for binary black hole (BBH) research. LIGO and Virgo detections are progressively drawing a spectacular fresco of BBH masses, spins and merger rates. In this review, we

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Future searches for gravitational waves from space will be sensitive to double compact objects in our Milky Way. We present new simulations of the populations of double black holes (BHBHs), BH

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GW200115 is one of the first two confidently detected gravitational-wave events of neutron star–black hole mergers. An interesting property of this merger is that the black hole, if spinning rapidly,