Is black-hole ringdown a memory of its progenitor?

  title={Is black-hole ringdown a memory of its progenitor?},
  author={Ioannis Kamaretsos and Mark Hannam and Bangalore S. Sathyaprakash},
  journal={Physical review letters},
  volume={109 14},
We perform an extensive numerical study of coalescing black-hole binaries to understand the gravitational-wave spectrum of quasinormal modes excited in the merged black hole. Remarkably, we find that the masses and spins of the progenitor are clearly encoded in the mode spectrum of the ringdown signal. Some of the mode amplitudes carry the signature of the binary's mass ratio, while others depend critically on the spins. Simulations of precessing binaries suggest that our results carry over to… CONTINUE READING

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