Orbital eccentricities in primordial black hole binaries

@article{Cholis2016OrbitalEI,
title={Orbital eccentricities in primordial black hole binaries},
author={I. Cholis and E. Kovetz and Y. Ali-Haimoud and S. Bird and M. Kamionkowski and Julian B. Mu{\~n}oz and A. Raccanelli},
journal={Physical Review D},
year={2016},
volume={94},
pages={084013}
}
It was recently suggested that the merger of $\ensuremath{\sim}30\text{ }\text{ }{M}_{\ensuremath{\bigodot}}$ primordial black holes (PBHs) may provide a significant number of events in gravitational-wave observatories over the next decade, if they make up an appreciable fraction of the dark matter. Here we show that measurement of the eccentricities of the inspiralling binary black holes can be used to distinguish these binaries from those produced by more traditional astrophysical mechanisms… Expand
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