Hypercompact Stellar Systems Around Recoiling Supermassive Black Holes

  title={Hypercompact Stellar Systems Around Recoiling Supermassive Black Holes},
  author={David Merritt and Jeremy D. Schnittman and Stefanie Komossa},
  journal={The Astrophysical Journal},
A supermassive black hole ejected from the center of a galaxy by gravitational-wave recoil carries a retinue of bound stars—a hypercompact stellar system (HCSS). The numbers and properties of HCSSs contain information about the merger histories of galaxies, the late evolution of binary black holes, and the distribution of gravitational-wave kicks. We relate the structural properties (size, mass, density profile) of HCSSs to the properties of their host galaxies and to the size of the kick in… 
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