Is there a Supermassive Black Hole at the Center of the Milky Way

@article{Reid2008IsTA,
  title={Is there a Supermassive Black Hole at the Center of the Milky Way},
  author={M. Reid},
  journal={International Journal of Modern Physics D},
  year={2008},
  volume={18},
  pages={889-910}
}
  • M. Reid
  • Published 2008
  • Physics
  • International Journal of Modern Physics D
This review outlines the observations that now provide an overwhelming scientific case that the center of the Milky Way harbors a supermassive black hole. Observations at infrared wavelength trace stars that orbit about a common focal position and require a central mass (M) of 4 × 106 M⊙ within a radius of 100 AU. Orbital speeds have been observed to exceed 5,000 km s-1. At the focal position there is an extremely compact radio source (Sgr A*), whose apparent size is near the Schwarzschild… Expand
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