Scalar field dynamics around black holes: superradiant instabilities and binary evolution
arXiv:2105.05918
Abstract
In classical general relativity astrophysical black holes can be affected by the superradiant instability when gravity is minimally coupled to a light bosonic field. The majority of phenomenological studies have focused on the idealized case in which the black hole is initially surrounded by a single mode superradiant seed. By studying the evolution of a scalar field with multiple modes initial data in a quasiadiabatic approximation, we show that the dynamics is more involved and depend on the initial seed energy and the amplitude ratio between the modes. We also present preliminary results of the dynamical evolution of a massive scalar field around a Newtonian and a fully relativistic, black hole binary.
arXiv comment4 pages, 3 figures, contribution to the 2021 Gravitation session of the 55th Rencontres de Moriond
References in corpus (10)
- Exploring the String Axiverse with Precision Black Hole Physics
- Instability of the massive Klein-Gordon field on the Kerr spacetime
- Probing Ultralight Bosons with Binary Black Holes
- Constraining the mass of dark photons and axion-like particles through black-hole superradiance
- Ultralight boson cloud depletion in binary systems
- Impact of multiple modes on the black-hole superradiant instability
- Superradiance -- the 2020 Edition
- Black hole binaries and light fields: Gravitational molecules
- Superradiant scattering by a black hole binary
- Evolution of diffuse scalar clouds around binary black holes