Gravitational waves from scalar field accretion

Abstract

Our aim in this work is to outline some physical consequences of the interaction between black holes and scalar field halos in terms of gravitational waves. In doing so, the black hole is taken as a static and spherically symmetric gravitational source, {\it i. e.} the Schwarzschild black hole, and we work within the test field approximation, considering that the scalar field lives in the curved space-time outside the black hole. We focused on the emission of gravitational waves when the black hole is perturbed by the surrounding scalar field matter. The symmetries of the spacetime and the simplicity of the matter source allow, by means of a spherical harmonic decomposition, to study the problem by means of a one dimensional description. Some properties of such gravitational waves are discussed as a function of the parameters of the infalling scalar field, and allow us to make the conjecture that the gravitational waves carry information on the type of matter that generated them.

8 pages, 3 figures, added references; accepted in Phys. Rev. D

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Cited by in corpus (6)

• Dynamical Boson Stars
• A Review on the Scalar Field/ Bose-Einstein Condensate Dark Matter Model
• Wiggly tails: a gravitational wave signature of massive fields around black holes
• Self-interacting scalar field distributions around Schwarzschild black holes
• Electromagnetic partner of the gravitational signal during accretion onto black holes
• Global Dynamics for a relativistic charged and colliding plasma in presence of a massive scalar field on the Robertson-Walker spacetime