Gravitational wave signatures of black hole mimicking objects

          @misc{ pirsa_PIRSA:25020023,
            doi = {10.48660/25020023},
            url = {https://pirsa.org/25020023},
            author = {Siemonsen, Nils Peter},
            keywords = {Strong Gravity},
            language = {en},
            title = {Gravitational wave signatures of black hole mimicking objects},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {feb},
            note = {PIRSA:25020023 see, \url{https://pirsa.org}}
          }
          

Abstract

Gravitational wave observations of strongly gravitating compact objects allow us not only to probe black holes and neutron stars, but also have the potential to uncover new fundamental physics. To distinguish black holes from their mimickers, sufficiently accurate predictions for gravitational wave signatures of these objects are required. Boson stars, a particular representative of the larger class of ultra compact objects, can be used to understand the behavior of these systems and their imprints left on the emitted waveform. I will discuss the inspiral and merger dynamics of binary boson stars, focusing particularly on the ringdown phase, and comment on the appearance of gravitational wave echoes in the post-merger phase of black hole mimickers more broadly.