2006/07/31 by Vitor Cardoso, Vítor Cardoso, Óscar J. C. Dias +2 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.74.044008
published as Phys.Rev. D74 (2006) 044008 · 11 pages, RevTex4. v2: small typos corrected. Version to appear in Phys. Rev. D
arxiv created 2006/08/03 · openalex publication_date 2006/08/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is now established that small Kerr--anti-de Sitter (Kerr-AdS) black holes are unstable against scalar perturbations, via the superradiant amplification mechanism. We show that small Kerr-AdS black holes are also unstable against gravitational perturbations and we compute the features of this instability. We also describe with great detail the evolution of this instability. In particular, we identify its end-point state. It corresponds to a Kerr-AdS black hole whose boundary is an Einstein universe rotating with the light velocity. This black hole is expected to be slightly oblate and to coexist in equilibrium with a certain amount of outside radiation.