PIRSA:20100005

How does a dark compact object ringdown?

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}}
          }

Elisa Maggio

Sapienza University of Rome

Talk number
PIRSA:20100005
Collection
Talk Type
Subject
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.