Are nonsingular black holes with super-Planckian hair ruled out by S2 star data?

Abstract

We propose a novel nonsingular black-hole spacetime representing a strong deformation of the Schwarzschild solution with mass $M$ by an additional hair $\ell$, which may be hierarchically larger than the Planck scale. Our black-hole model presents a de Sitter core and $\mathcal{O}({\ell }^2/r^2)$ slow-decaying corrections to the Schwarzschild solution. Our black-hole solutions are thermodynamically preferred when $0.2\lesssim \ell /GM\lesssim 0.3$ and are characterized by strong deviations in the orbits of test particles from the Schwarzschild case. In particular, we find corrections to the perihelion precession angle scaling linearly with $\ell$. We test our model using the available data for the orbits of the S2 star around ${\text{SgrA}}^{\ast }$. These data strongly constrain the value of the hair $\ell$, casting an upper bound on it of $\sim 0.47GM$, but do not rule out the possible existence of regular black holes with super-Planckian hair.

arXiv comment6 pages, 2 figures, 1 table. Revised version: Addendum and some references have been added

References in corpus (36)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• emcee: The MCMC Hammer
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
• Formation and evaporation of non-singular black holes
• Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way
• The fuzzball proposal for black holes: an elementary review
• Noncommutative geometry inspired Schwarzschild black hole
• The First Measurement of Spectral Lines in a Short-Period Star Bound to the Galaxy's Central Black Hole: A Paradox of Youth
• First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric
• Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole
• An Update on Monitoring Stellar Orbits in the Galactic Center
• The Accelerations of Stars Orbiting the Milky Way's Central Black Hole
• Construction of Regular Black Holes in General Relativity
• A Metric for Rapidly Spinning Black Holes Suitable for Strong-Field Tests of the No-Hair Theorem
• Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole
• A new method for shadow calculations: application to parameterised axisymmetric black holes
• The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits
• General parametrization of axisymmetric black holes in metric theories of gravity
• Black Holes in Loop Quantum Gravity
• A novel family of rotating black hole mimickers
• Anisotropic stars as ultracompact objects in General Relativity
• Regular black holes with asymptotically Minkowski cores
• Testing the Kerr black hole hypothesis
• Testing Rotating Regular Metrics with EHT Results of Sgr A*
• General relativistic effects on the orbit of the S2 star with GRAVITY
• Pinpointing the near-infrared location of Sgr A* by correcting optical distortion in the NACO imager
• Regularized Stable Kerr Black Hole: Cosmic Censorships, Shadow and Quasi-Normal Modes
• Orbital precession of the S2 star in Scalar-Tensor-Vector-Gravity
• $f(R)$-gravity after the detection of the orbital precession of the S2 star around the Galactic centre massive black hole
• Nonlocal star as a blackhole mimicker
• Unveiling the nature of SgrA* with the geodesic motion of S-stars
• Testing regular black holes with X-ray and GW data
• Testing the Kerr black hole hypothesis with the continuum-fitting and the iron line methods: the case of GRS 1915+105
• Regular black holes in Verlinde's emergent gravity
• The eye of the storm: A regular Kerr black hole

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