PIRSA:18090033

Video URL

https://pirsa.org/18090033

How to kick black holes out of their galaxies

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

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

          @misc{ scivideos_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 for Theoretical Physics},
            year = {2018},
            month = {sep},
            note = {PIRSA:18090033 see, \url{https://scivideos.org/index.php/pirsa/18090033}}
          }

Davide Gerosa California Institute of Technology

Talk numberPIRSA:18090033
DOI10.48660/18090033
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
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.