Four-Body Effects in Globular Cluster Black Hole Coalescence

  title={Four-Body Effects in Globular Cluster Black Hole Coalescence},
  author={M. Coleman Miller and Douglas P. Hamilton},
  journal={The Astrophysical Journal},
  pages={894 - 898}
In the high-density cores of globular clusters, multibody interactions are expected to be common, with the result that black holes in binaries are hardened by interactions. It was shown by Sigurdsson and Hernquist, Kulkarni, Hut, and McMillan, and others in 1993 that 10 M☉ black holes interacting exclusively by three-body encounters do not merge in the clusters themselves, because recoil kicks the binaries out of the clusters before the binaries are tight enough to merge. Here we consider a new… 
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