Charged Black Holes in the Kalb-Ramond Background with Lorentz Violation: Null Geodesics and Optical Appearance of a Thin Accretion Disk

Abstract

In this paper, we investigate the optical appearance of a charged black hole in the Kalb-Ramond background, incorporating a Lorentz-violating parameter $l=0.01$. By analyzing the null geodesics, we derive the photon sphere, event horizon, effective potential, and critical impact parameters. We then employ a ray-tracing technique to study the trajectories of photons surrounding a thin accretion disk. Three different emission models are considered to explore the observed intensity profiles of direct rings, lensing rings, and photon sphere. By comparing these results with those of the standard Reissner-Nordström black hole ($l=0$) and the Kalb-Ramond black hole with different values of Lorentz-violating parameter (specifically, $l=0.05$ and $l=0.1$ respectively), we find that the Lorentz symmetry breaking will lead to a decrease in the radii of the photon sphere, the event horizon, and the innermost stable circular orbit. Consequently, this makes the detection of these black holes more challenging.

17 pages, 12 figures

References in corpus (19)

• Black Hole Shadows, Photon Rings, and Lensing Rings
• Constraints on black-hole charges with the 2017 EHT observations of M87*
• Magnetically charged black holes from non-linear electrodynamics and the Event Horizon Telescope
• The Shadow of a Spherically Accreting Black Hole
• Topology of black hole thermodynamics
• Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud background with quintessential field
• Photon Ring and Observational Appearance of a Hairy Black Hole
• Effect of Lorentz Symmetry Breaking on the Deflection of Light in a Cosmic String Spacetime
• Electrically charged black holes in gravity with a background Kalb-Ramond field
• Rings and images of Horndeski hairy black hole illuminated by various thin accretions
• Static neutral black holes in Kalb-Ramond gravity
• Gravitational lensing of a Schwarzschild-like black hole in Kalb-Ramond gravity
• Geodesics structure and deflection angle of electrically charged black holes in gravity with a background Kalb-Ramond field
• Spontaneous Lorentz symmetry-breaking constraints in Kalb-Ramond gravity
• Nonlinearly charged black holes: Shadow and Thin-accretion disk
• Constraining a black hole companion for M87* through imaging by the Event Horizon Telescope
• Shadows near supermassive black holes: from a theoretical concept to GR test
• Influence of plasma on the optical appearance of spinning black hole in Kalb-Ramond gravity and its Existence around M87* and Sgr A*
• On the Kalb-Ramond modified Lorentz violating hairy black holes and Thorne's hoop conjecture

Cited by in corpus (1)

• Charged black holes in Kalb-Ramond gravity: Weak Deflection Angle, Shadow cast, Quasinormal Modes and Neutrino annihilation