Can high-velocity stars reveal black holes in globular clusters?

  title={Can high-velocity stars reveal black holes in globular clusters?},
  author={Gordon Alan Drukier and Charles David Bailyn},
  journal={The Astrophysical Journal},
We estimate the number of individual fast-moving stars observable in globular clusters under the assumption that the clusters contain massive central black holes that follow the galactic MBH-σ relationship. We find that radial velocity measurements are unlikely to detect such stars but that proper-motion studies could reveal such stars, if they exist, in the most likely clusters. Thus, Hubble Space Telescope proper-motion studies can test this hypothesis in a few nearby clusters. 

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