Gravitational-Wave Fringes at LIGO: Detecting Compact Dark Matter by Gravitational Lensing.

@article{Jung2019GravitationalWaveFA,
  title={Gravitational-Wave Fringes at LIGO: Detecting Compact Dark Matter by Gravitational Lensing.},
  author={Sunghoon Jung and Chang Sub Shin},
  journal={Physical review letters},
  year={2019},
  volume={122 4},
  pages={
          041103
        }
}
Utilizing gravitational-wave (GW) lensing opens a new way to understand the small-scale structure of the Universe. We show that, in spite of its coarse angular resolution and short duration of observation, LIGO can detect the GW lensing induced by small structures, in particular by compact dark matter (DM) or the primordial black hole of 10-10^{5}  M_{⊙}, which remains an interesting DM candidate. The lensing is detected through GW frequency chirping, creating the natural and rapid change of… 
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