PIRSA:20100005 Scientific Series Strong Gravity

DOI10.48660/20100005

Series: Strong Gravity

Maggio, E. (2020). How does a dark compact object ringdown?. Perimeter Institute. https://pirsa.org/20100005

Maggio, Elisa. How does a dark compact object ringdown?. Perimeter Institute, Oct. 01, 2020, https://pirsa.org/20100005 

@misc{ pirsa_PIRSA:20100005,
  doi = {10.48660/20100005},
  url = {https://pirsa.org/20100005},
  author = {Maggio, Elisa},
  keywords = {Strong Gravity},
  language = {en},
  title = {How does a dark compact object ringdown?},
  publisher = {Perimeter Institute},
  year = {2020},
  month = {oct},
  note = {PIRSA:20100005 see, \url{https://pirsa.org}}
}

Abstract

Gravitational waves from the coalescence of compact binaries provide a unique opportunity to test gravity in strong field regime. In particular, the postmerger phase of the gravitational signal is a proxy for the nature of the remnant.

This is of particular interest in view of some quantum-gravity models which predict the existence of horizonless dark compact objects that overcome the paradoxes associated to black holes. Such dark compact objects can emit a modified ringdown with respect to the black hole case and late-time gravitational wave echoes as characteristic fingerprints.

In this talk, I develop a generic framework to the study of the ringdown of dark compact objects and provide a gravitational-wave template for the echo signal. Finally, I assess the detectability of dark compact objects with current and future gravitational-wave detectors.

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