Hints of Spin-Orbit Resonances in the Binary Black Hole Population.

  title={Hints of Spin-Orbit Resonances in the Binary Black Hole Population.},
  author={Vijay Varma and Sylvia Biscoveanu and Maximiliano Isi and Will M. Farr and Salvatore Vitale},
  journal={Physical review letters},
  volume={128 3},
Binary black hole spin measurements from gravitational wave observations can reveal the binary's evolutionary history. In particular, the spin orientations of the component black holes within the orbital plane, ϕ_{1} and ϕ_{2}, can be used to identify binaries caught in the so-called spin-orbit resonances. In a companion paper, we demonstrate that ϕ_{1} and ϕ_{2} are best measured near the merger of the two black holes. In this work, we use these spin measurements to provide the first… 

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