Gas cloud G2 can illuminate the black hole population near the galactic center.

@article{Bartos2013GasCG,
  title={Gas cloud G2 can illuminate the black hole population near the galactic center.},
  author={Imre Bartos and Zolt{\'a}n Haiman and Bence Kocsis and Szabolcs M{\'a}rka},
  journal={Physical review letters},
  year={2013},
  volume={110 22},
  pages={
          221102
        }
}
Galactic nuclei are expected to be densely populated with stellar- and intermediate-mass black holes. Exploring this population will have important consequences for the observation prospects of gravitational waves as well as understanding galactic evolution. The gas cloud G2 currently approaching Sgr A* provides an unprecedented opportunity to probe the black hole and neutron star population of the Galactic nucleus. We examine the possibility of a G2-cloud-black-hole encounter and its… 

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