Detectability of the subdominant mode in a binary black hole ringdown

@article{Bhagwat2019DetectabilityOT,
  title={Detectability of the subdominant mode in a binary black hole ringdown},
  author={Swetha Bhagwat and Miriam Cabero and Collin D. Capano and Badri Krishnan and Duncan A. Brown},
  journal={Physical Review D},
  year={2019},
  volume={102},
  pages={024023}
}
The ringdown is the late part of the post-merger signature emitted during the coalescence of two black holes and comprises of a superposition of quasi-normal-modes. Within general relativity, because of the no-hair theorems, the frequencies and damping times of these modes are entirely determined by the mass and angular momentum of the final Kerr black hole. A detection of multiple ringdown modes would potentially allow us to test the no-hair theorem from observational data. The parameters… 

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