PIRSA:18090033

How to kick black holes out of their galaxies

Gerosa, D. (2018). How to kick black holes out of their galaxies. Perimeter Institute. https://pirsa.org/18090033

Gerosa, Davide. How to kick black holes out of their galaxies. Perimeter Institute, Sep. 13, 2018, https://pirsa.org/18090033 

          @misc{ pirsa_PIRSA:18090033,
            doi = {10.48660/18090033},
            url = {https://pirsa.org/18090033},
            author = {Gerosa, Davide},
            keywords = {Strong Gravity},
            language = {en},
            title = {How to kick black holes out of their galaxies},
            publisher = {Perimeter Institute},
            year = {2018},
            month = {sep},
            note = {PIRSA:18090033 see, \url{https://pirsa.org}}
          }

Davide Gerosa

California Institute of Technology

Talk number
PIRSA:18090033
Collection
Talk Type
Subject
Abstract

Black-hole recoils are arguably the strong-gravity phenomena with the most striking astrophysical consequences. In the late inspiral and final coalescence of black-hole binaries, anisotropic emission of gravitational waves causes significant linear momentum loss. The remnant black hole, therefore, recoils in the opposite direction. These final kicks can reach magnitudes up to 5000 km/s (“superkicks”), larger than the escape speed of even the most massive galaxies, thus opening the possibility of black hole ejections. In this talk, I summarize recent advances in modeling black-hole recoils and their astrophysical environments. I will address the relevance of disk-assisted spin alignment, new approaches to model black-hole recoils with waveform approximants, and prospects to directly detect superkicks with gravitational-wave detectors.