The LIGO/Virgo detections of binary black hole mergers marked a watershed moment in astronomy, ushering in the era of precision tests of Kerr dynamics. We review theoretical and experimental challenges that must be overcome to carry out black hole spectroscopy with present and future gravitational wave detectors. Among other topics, we discuss quasinormal mode excitation in binary mergers, astrophysical event rates, tests of black hole dynamics in modified theories of gravity, parameterized “post-Kerr” ringdown tests, exotic compact objects, and proposed data analysis methods to improve spectroscopic tests of Kerr dynamics by stacking multiple events.
E. Berti, K. Yagi, H. Yang, et. al.
Fri, 12 Jan 18
Comments: 40 pages, 10 figures, 1 table. Review paper to appear in the General Relativity and Gravitation (GRG) Topical Collection “Testing the Kerr spacetime with gravitational-wave and electromagnetic observations” (Guest Editor: Emanuele Berti)