Kerr black holes with synchronised axionic hair

Abstract

We construct and analyse Kerr black holes (BHs) with synchronised axionic hair. These are the BH generalisations of the recently constructed rotating axion boson stars arXiv:2005.05982. Such BHs are stationary, axially symmetric, asymptotically flat solutions of the complex Einstein-Klein-Gordon theory with a QCD axion-like potential. They are regular everywhere on and outside the event horizon. The potential is characterised by two parameters: the mass of the axion-like particle, $m_a$ and the decay constant $f_a$. The limit $f_a\to \infty$ recovers the original example of Kerr BHs with synchronised scalar hair arXiv:1403.2757. The effects of the non-linearities in the potential become important for $f_a\lesssim 1$. We present an overview of the parameter space of the solutions together with a study of their basic geometric and phenomenological properties, for an illustrative value of the coupling that yields a non-negligible impact of the self-interactions.

arXiv comment15 pages, 7 figures

References in corpus (54)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• String Axiverse
• Axions In String Theory
• Testing General Relativity with Present and Future Astrophysical Observations
• GW190521: A Binary Black Hole Merger with a Total Mass of $150M_{\odot }$
• The Low-Energy Frontier of Particle Physics
• Geodesic stability, Lyapunov exponents and quasinormal modes
• Kerr black holes with scalar hair
• The QCD axion, precisely
• TOPICAL REVIEW: General relativistic boson stars
• Black holes, gravitational waves and fundamental physics: a roadmap
• Exploring the String Axiverse with Precision Black Hole Physics
• Shadows and strong gravitational lensing: a brief review
• Shadows of Kerr black holes with scalar hair
• Naturally Light Hidden Photons in LARGE Volume String Compactifications
• Proca Stars: gravitating Bose-Einstein condensates of massive spin 1 particles
• Superradiant Instability and Backreaction of Massive Vector Fields around Kerr Black Holes
• Kerr black holes with Proca hair
• Stationary Scalar Clouds Around Rotating Black Holes
• Testing the black hole "no-hair" hypothesis
• GW190521 as a merger of Proca stars: a potential new vector boson of $8.7\times 10^{-13}$ eV
• Dilute and dense axion stars
• Shadows of Kerr black holes with and without scalar hair
• Black Holes and Scalar Fields
• Stationary resonances of rapidly-rotating Kerr black holes
• Non-linear dynamics of spinning bosonic stars: formation and stability
• Kerr black holes with self-interacting scalar hair: hairier but not heavier
• EHT constraint on the ultralight scalar hair of the M87 supermassive black hole
• Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions
• Non-linear Q-clouds around Kerr black holes
• Iron K$\alpha$ line of Kerr black holes with scalar hair
• Stability of rotating scalar boson stars with nonlinear interactions
• Kerr black holes with synchronised hair: an analytic model and dynamical formation
• Effective stability against superradiance of Kerr black holes with synchronised hair
• Axion boson stars
• Kerr-Newman black holes with scalar hair
• On the dynamical bar-mode instability in spinning bosonic stars
• Excited Kerr black holes with scalar hair
• How fast can a black hole rotate?
• Rotating Axion Boson Stars
• Scalar Hairy Black Holes in Four Dimensions are Unstable
• Synchronised gravitational atoms from mergers of bosonic stars
• Black holes with synchronised Proca hair: linear clouds and fundamental non-linear solutions
• Scalar Dark Matter Clumps with Angular Momentum
• Kerr black holes with synchronised scalar hair and higher azimuthal harmonic index
• Kerr black holes with parity-odd scalar hair
• Constraining Black Holes with Light Boson Hair and Boson Stars using Epicyclic Frequencies and QPOs
• Kerr black holes with synchronised scalar hair and boson stars in the Einstein-Friedberg-Lee-Sirlin model
• Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model
• Skyrmions around Kerr black holes and spinning BHs with Skyrme hair
• Rotating tensor-multiscalar black holes with two scalars
• Horizon geometry for Kerr black holes with synchronised hair
• Iron K$\alpha$ line of Kerr black holes with Proca hair

Cited by in corpus (13)

• Equatorial timelike circular orbits around generic ultracompact objects
• Magnetized accretion disks around Kerr black holes with scalar hair - I. Constant angular momentum disks
• Dirac-boson stars
• Novel exact ultra-compact and ultra-sparse hairy black holes emanating from regular and phantom scalar fields
• Analytic and asymptotically flat hairy (ultra-compact) black-hole solutions and their axial perturbations
• Magnetized accretion disks around Kerr black holes with scalar hair -- Nonconstant angular momentum disks
• Scalar dark matter vortex stabilization with black holes
• On black holes with scalar hairs
• Compact objects in quadratic Palatini gravity generated by a free scalar field
• Spherical black holes with minimally coupled scalar cloud/hair in Einstein-Born-Infeld gravity
• Exploring the viability of pseudo Nambu-Goldstone boson as ultralight dark matter in a mass range relevant for strong gravity applications
• Slowly Rotating Boson Stars
• Polish Doughnuts around Scalarized Kerr Black Holes