Ergosphere, photon region structure, and the shadow of a rotating charged Weyl black hole

Abstract

In this paper, we explore the photon region and the shadow of the rotating counterpart of a static charged Weyl black hole, which has been previously discussed according to null and time-like geodesics. The rotating black hole shows strong sensitivity to the electric charge and the spin parameter, and its shadow changes from being oblate to being sharp by increasing in the spin parameter. Comparing the calculated vertical angular diameter of the shadow with that of M87*, we found that the latter may possess about $10^{3}6$ protons as its source of electric charge, if it is a rotating charged Weyl black hole. A complete derivation of the ergosphere and the static limit is also presented.

arXiv comment22 pages, 34 figures

References in corpus (82)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Planck 2015 results. XIII. Cosmological parameters
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• Modified Gravity and Cosmology
• Shadows and strong gravitational lensing: a brief review
• Rotating regular black holes
• Alternatives to Dark Matter and Dark Energy
• Photon Regions and Shadows of Kerr-Newman-NUT Black Holes with a Cosmological Constant
• Shadow of rotating regular black holes
• Generating rotating regular black hole solutions without complexification
• A Metric for Rapidly Spinning Black Holes Suitable for Strong-Field Tests of the No-Hair Theorem
• Probes and Tests of Strong-Field Gravity with Observations in the Electromagnetic Spectrum
• Shadow of a rotating braneworld black hole
• The dark matter of gravitational lensing
• Null geodesics and shadow of a rotating black hole in extended Chern-Simons modified gravity
• Making the Case for Conformal Gravity
• The Current Ability to Test Theories of Gravity with Black Hole Shadows
• A size of ~1 AU for the radio source Sgr A* at the centre of the Milky Way
• Black hole shadow in an asymptotically-flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes
• Black Holes in Modified Gravity (MOG)
• Shadow of a Kaluza-Klein rotating dilaton black hole
• A coordinate-independent characterization of a black hole shadow
• Black Hole Parameter Estimation from Its Shadow
• Black hole shadow in an expanding universe with a cosmological constant
• Strong-Field Tests of Gravity Using Pulsars and Black Holes
• Black hole shadow in a general rotating spacetime obtained through Newman-Janis algorithm
• AdS and Lifshitz Black Holes in Conformal and Einstein-Weyl Gravities
• Testing General Relativity with the Shadow Size of Sgr A*
• Photon Regions and Shadows of Accelerated Black Holes
• From static to rotating to conformal static solutions: Rotating imperfect fluid wormholes with(out) electric or magnetic field
• A class of elementary particle models without any adjustable real parameters
• Testing General Relativity with the Event Horizon Telescope
• Are galactic rotation curves really flat?
• Measurement of the spin of the M87 black hole from its observed twisted light
• Shadows of Multi-Black Holes: Analytic Exploration
• A General Relativistic Null Hypothesis Test with Event Horizon Telescope Observations of the black-hole shadow in Sgr A*
• Shadows of rotating five-dimensional charged EMCS black holes
• 230 GHz VLBI observations of M87: event-horizon-scale structure at the enhanced very-high-energy $\gamma$-ray state in 2012
• Understanding photon sphere and black hole shadow in dynamically evolving spacetimes
• Classical tests for Weyl gravity: deflection of light and time delay
• Testing Rotating Regular Metrics as Candidates for Astrophysical Black Holes
• Spacetime completeness of non-singular black holes in conformal gravity
• Shadow of a black hole at cosmological distance
• Rotating regular black holes in conformal massive gravity
• Applicability of the Newman-Janis Algorithm to Black Hole Solutions of Modified Gravity Theories
• Topological Black Holes in Weyl Conformal Gravity
• Thermal Image and Phase Transitions of Charged AdS Black Holes using Shadow Analysis
• Testing conformal gravity with the supermassive black hole in 1H0707-495
• Testing conformal gravity with astrophysical black holes
• Cosmological Perturbations in Conformal Gravity
• Black hole evaporation in conformal gravity
• Light deflection in Weyl gravity: constraints on the linear parameter
• Black hole shadows in fourth-order conformal Weyl gravity
• Light deflection in Weyl gravity: critical distances for photon paths
• Gamma-ray bursts as cosmological probes: LambdaCDM vs. conformal gravity
• Gauge choice and geodetic deflection in conformal gravity
• Exact gravitational lensing in conformal gravity and Schwarzschild-de Sitter spacetime
• A Kinematical Approach to Conformal Cosmology
• Exact Static Cylindrical Solution to Conformal Weyl Gravity
• On the Null Trajectories in Conformal Weyl Gravity
• Conformal Gravity: Dark Matter and Dark Energy
• Kerr Metric, Geodesic Motion, and Flyby Anomaly in Fourth-Order Conformal Gravity
• X-ray clusters of galaxies in conformal gravity
• Inflationary cosmology from quantum Conformal Gravity
• Conformal Gravity Rotation Curves with a Conformal Higgs Halo
• Gravitational Rutherford scattering of electrically charged particles from a charged Weyl black hole
• Quasinormal modes of black holes in Weyl gravity: Electromagnetic and gravitational perturbations
• Astrophysical Gravitational Waves in Conformal Gravity
• Classical tests on a charged Weyl black hole: bending of light, Shapiro delay and Sagnac effect
• Observable Quantities in Weyl Gravity
• Test of conformal gravity with astrophysical observations
• Motion of massive particles around a charged Weyl black hole and the geodetic precession of orbiting gyroscopes
• Singularity-free black holes in conformal gravity: new observational constraints
• Spherical Solutions due to the Exterior Geometry of a Charged Weyl Black Hole
• Conformal Gravity and the Alcubierre Warp Drive Metric
• Gravitational waves in conformal gravity
• Astrophysical Tests of Kinematical Conformal Cosmology in Fourth-Order Conformal Weyl Gravity
• Gravitational waves in massive conformal gravity
• Dynamical spacetimes in conformal gravity
• Focusing of world-lines in Weyl gravity
• Mass decomposition of SLACS lens galaxies in Weyl conformal gravity

Cited by in corpus (9)

• Shadow and weak deflection angle of extended uncertainty principle black hole surrounded with dark matter
• Black Hole Images as Tests of General Relativity: Effects of Spacetime Geometry
• Photon regions, shadow observables and constraints from M87* of a charged rotating black hole
• Testing alternative theories of gravity by fitting the hot-spot data of Sgr A*
• Optical features of rotating quintessential charged black holes in de-Sitter spacetime
• Optical Features of Rotating Black Hole with Nonlinear Electrodynamics
• Shadow analysis of an approximate rotating black hole solution with weakly coupled global monopole charge
• The role of elliptic integrals in calculating the gravitational lensing of a charged Weyl black hole surrounded by plasma
• Generalized Eddington--Finkelstein Coordinates and Exact Vaidya-Type Solutions in Weyl Conformal Gravity