STU Black Holes and SgrA*

Abstract

The equations of null geodesics in the STU family of rotating black hole solutions of supergravity theory, which may be considered as deformations of the vacuum Kerr metric, are completely integrable. We propose that they be used as a foil to test, for example, with what precision the gravitational field external to the black hole at the centre of our galaxy is given by the Kerr metric. By contrast with some metrics proposed in the literature, the STU metrics satisfy by construction the dominant and strong energy conditions. Our considerations may be extended to include the effects of a cosmological term. We show that these metrics permit a straightforward calculation of the properties of black hole shadows.

20 pages

References in corpus (23)

• Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
• A Metric for Rapidly Spinning Black Holes Suitable for Strong-Field Tests of the No-Hair Theorem
• A new method for shadow calculations: application to parameterised axisymmetric black holes
• Null geodesics and shadow of a rotating black hole in extended Chern-Simons modified gravity
• General parametrization of axisymmetric black holes in metric theories of gravity
• Shadow of a Kaluza-Klein rotating dilaton black hole
• Testing General Relativity with the Shadow Size of Sgr A*
• Bumpy Black Holes in Alternate Theories of Gravity
• Hidden symmetries, null geodesics, and photon capture in the Sen black hole
• Precise analytic treatment of Kerr and Kerr-(anti) de Sitter black holes as gravitational lenses
• Photon Spheres and Sonic Horizons in Black Holes from Supergravity and Other Theories
• Periapsis and gravitomagnetic precessions of stellar orbits in Kerr and Kerr-de Sitter black hole spacetimes
• Particle Collisions on Stringy Black Hole Background
• Black Hole Shadow Image and Visibility Analysis of Sagittarius A*
• Generalized hidden symmetries and the Kerr-Sen black hole
• Aspherical Photon and Anti-Photon Surfaces
• Testing the Kerr nature of black hole candidates using iron line reverberation mapping in the CPR framework
• Super-Geometrodynamics
• "Triangular" extremal dilatonic dyons
• Vacuum Polarization of STU Black Holes and their Subtracted Geometry Limit
• Wave Equation for the Wu Black Hole
• An Analysis of the Wave Equation for the $U(1{)}^2$ Gauged Supergravity Black Hole
• R-parity violating chargino decays at the LHC

Cited by in corpus (8)

• Testing General Relativity with the Event Horizon Telescope
• Shadows of charged rotating black holes: Kerr-Newman versus Kerr-Sen
• Supergravity Black Holes, Love Numbers and Harmonic Coordinates
• Slice-reducible conformal Killing tensors, photon surfaces and shadows
• Killing horizons and surface gravities for a well-behaved three-function generalisation of the Kerr spacetime
• Positive Energy Functional for Massless Scalars in Rotating Black Hole Backgrounds of Maximal Ungauged Supergravity
• Higher-derivative Heterotic Kerr-Sen Black Holes
• Consistent Four-derivative Heterotic Truncations and the Kerr-Sen Solution