THE FIRST ACCURATE PARALLAX DISTANCE TO A BLACK HOLE

@article{MillerJones2009THEFA,
  title={THE FIRST ACCURATE PARALLAX DISTANCE TO A BLACK HOLE},
  author={James C. A. Miller-Jones and Peter G. Jonker and Vivek Dhawan and Walter Brisken and Michael Perry Rupen and G. A. Nelemans and E. Gallo Nrao and Sron and Cfa and Nijmegen and Mit},
  journal={The Astrophysical Journal},
  year={2009},
  volume={706}
}
Using astrometric VLBI observations, we have determined the parallax of the black hole X-ray binary V404 Cyg to be 0.418 ± 0.024 mas, corresponding to a distance of 2.39 ± 0.14 kpc, significantly lower than the previously accepted value. This model-independent estimate is the most accurate distance to a Galactic stellar-mass black hole measured to date. With this new distance, we confirm that the source was not super-Eddington during its 1989 outburst. The fitted distance and proper motion… Expand

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