Long-Term Stable Nonlinear Evolutions of Ultracompact Black-Hole Mimickers
Gareth Arturo Marks, Seppe Staelens, Tamara Evstafyeva, Ulrich Sperhake
Abstract
We study the stability of ultracompact boson stars admitting light rings combining a perturbative analysis with 3+1 numerical-relativity simulations with and without symmetry assumptions. We observe excellent agreement between all perturbative and numerical results, which uniformly support the hypothesis that this family of black-hole mimickers is separated into stable and unstable branches by extremal-mass configurations. This separation includes, in particular, thin-shell boson stars with light rings located on the stable branch, which we conclude to represent long-term stable black-hole mimickers.
Topics & Concepts
PhysicsStarsSymmetry (geometry)Stability (learning theory)Nonlinear systemBosonSymmetry breakingCircular symmetryTheoretical physicsClassical mechanicsInstabilityAstrophysicsSymmetry groupMixing (physics)Nonlinear opticsQuantum electrodynamicsQuantum mechanicsPulsars and Gravitational Waves ResearchAstrophysical Phenomena and ObservationsCosmology and Gravitation Theories