Construction and physical properties of Kerr black holes with scalar hair

By Carlos A. R. Herdeiro, Eugen Radu. 2015

279 citations recorded by the source corpus.

Kerr black holes (BHs) with scalar hair are solutions of the Einstein–Klein–Gordon field equations describing regular (on and outside an event horizon), asymptotically flat BHs with scalar hair (Herdeiro and Radu 2014 Phys. Rev. Lett. 112 221101). These BHs interpolate continuously between the Kerr solution and rotating boson stars in D = 4 spacetime dimensions. Here we provide details on their construction, discussing properties of the ansatz, the field equations, the boundary conditions and the numerical strategy. Then, we present an overview of the parameter space of the solutions, and describe in detail the space–time structure of the BH’s exterior geometry and of the scalar field for a sample of reference solutions. Phenomenological properties of potential astrophysical interest are also discussed, and the stability properties and possible generalizations are commented on. As supplementary material to this paper we make available numerical data files for the sample of reference solutions discussed, for public use (see stacks.iop.org/cqg/32/144001/mmedia).

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/752016f7a623597aaf6b8acdd803fba3466613b7

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Citations in the corpus

Kerr black holes with Proca hair (2016, methodology): “All previously constructed examples which employed this mechanism have scalar hair, both in four spacetime dimensions [1, 45, 58, 59] and in higher dimensions [76, 85], including the example in five dimensional asymptotically Anti-de-Sitter space found in [86].”
Shadows and strong gravitational lensing: a brief review (2018, methodology): “Among these models, Kerr BHs with bosonic hair have gathered attention recently, being both physically reasonable and minimally coupled to 4D gravity [32,47,48,54].”
Superradiance (2015, unknown): “[497].”
Black holes with scalar hair in light of the Event Horizon Telescope (2020, background): “For an inevitably incomplete list of important studies related to the construction and identification of observational signatures of HBHs in various theories of gravity or in the presence of various different types of matter fields, see for instance [5–54].”
Dynamical boson stars (2012, methodology): “As reviewed by Herdeiro and Radu [252], solutions can be parametrized in such a way that connects pure Kerr BHs with pure BSs.”