In this study,we investigate the optical appearance of a charged black hole in the Kalb-Ramond background,incorporating a Lorentz-violating parameter.By analyzing the null geodesics,we derive the photon sphere,event h...In this study,we investigate the optical appearance of a charged black hole in the Kalb-Ramond background,incorporating a Lorentz-violating parameter.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 the Lorentz-violating parameter(specifically,l=0.05 and l=0.1),we find that Lorentz symmetry breaking leads to a decrease in the radii of the photon sphere,event horizon,and innermost stable circular orbit.Consequently,the detection of these black holes is more challenging.展开更多
In this paper,we utilize the ray-tracing method to conduct an in-depth study of the observational images of asymmetric thin-shell wormholes in the Kalb-Ramond field.Initially,we calculate the null geodesics and effect...In this paper,we utilize the ray-tracing method to conduct an in-depth study of the observational images of asymmetric thin-shell wormholes in the Kalb-Ramond field.Initially,we calculate the null geodesics and effective potential energy of the asymmetric thin-shell wormhole and investigate the variations in the photon sphere radius and critical impact parameter under different values of charge Q and Lorentz-violation parameter l.Based on these calculations,we determine the photon deflection angles and trajectories within this space-time structure.Specifically,depending on the photon impact parameters,the photon trajectories can be categorized into three types.By using a thin accretion disk as the sole background light source and incorporating two classical observational radiation models,we find that under conditions of equal mass M,charge quantity Q,and Lorentz-violation parameter l asymmetric thin-shell wormholes exhibit unique observational features,such as additional lensing rings and photon ring clusters.Furthermore,distinct from black holes,as the charge quantity Q and Lorentz-violation parameter l increase,the coverage area of the specific additional halo expands correspondingly.展开更多
基金Supported by the Sichuan Science and Technology Program(2024NSFSC1999)。
文摘In this study,we investigate the optical appearance of a charged black hole in the Kalb-Ramond background,incorporating a Lorentz-violating parameter.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 the Lorentz-violating parameter(specifically,l=0.05 and l=0.1),we find that Lorentz symmetry breaking leads to a decrease in the radii of the photon sphere,event horizon,and innermost stable circular orbit.Consequently,the detection of these black holes is more challenging.
基金supported by the Sichuan Science and Technology Program(2024NSFSC1999)。
文摘In this paper,we utilize the ray-tracing method to conduct an in-depth study of the observational images of asymmetric thin-shell wormholes in the Kalb-Ramond field.Initially,we calculate the null geodesics and effective potential energy of the asymmetric thin-shell wormhole and investigate the variations in the photon sphere radius and critical impact parameter under different values of charge Q and Lorentz-violation parameter l.Based on these calculations,we determine the photon deflection angles and trajectories within this space-time structure.Specifically,depending on the photon impact parameters,the photon trajectories can be categorized into three types.By using a thin accretion disk as the sole background light source and incorporating two classical observational radiation models,we find that under conditions of equal mass M,charge quantity Q,and Lorentz-violation parameter l asymmetric thin-shell wormholes exhibit unique observational features,such as additional lensing rings and photon ring clusters.Furthermore,distinct from black holes,as the charge quantity Q and Lorentz-violation parameter l increase,the coverage area of the specific additional halo expands correspondingly.
