In this work, we study the DKP equation subjected to the action of combined vector plus scalar energy depend on potentials in(1+1) dimensions space-time. The conditions of normalisation and continuity equation are cal...In this work, we study the DKP equation subjected to the action of combined vector plus scalar energy depend on potentials in(1+1) dimensions space-time. The conditions of normalisation and continuity equation are calculated. The eigenfunctions and the corresponding eigenvalues are then determined. A numerical study is presented and the energy graphs for some values of the energy parameter are plotted.展开更多
This manuscript investigates a Schwarzschild black hole surrounded by perfect fluid dark matter embedded in a cloud of strings.The effects of its surroundings on thermodynamics,timelike and null geodesics,shadows,and ...This manuscript investigates a Schwarzschild black hole surrounded by perfect fluid dark matter embedded in a cloud of strings.The effects of its surroundings on thermodynamics,timelike and null geodesics,shadows,and quasinormal modes are analyzed.It is demonstrated that changes in spacetime,induced by the surrounding environment,significantly influence the stability,thermal phases,energy dynamics,particle trajectories,and observable features of the black hole's shadow,as well as its oscillation frequency and decay rate.展开更多
Gravity models given by higher-order scalar curvature corrections are believed to bear important consequences. Einstein-Bel-Robinson (EBR) gravity with quartic curvature modification motivated Sajadi et al. to explore...Gravity models given by higher-order scalar curvature corrections are believed to bear important consequences. Einstein-Bel-Robinson (EBR) gravity with quartic curvature modification motivated Sajadi et al. to explore static spherically symmetric black hole solutions using perturbative methods. In this study, inspired by their work, we investigate AdS black hole shadows in EBR gravity and demonstrate how the gravity parameter alters the energy emission rate. Finally, we address the same problem in the presence of plasma, because the black holes are thought to be surrounded by a medium that changes the geodesic of photons.展开更多
文摘In this work, we study the DKP equation subjected to the action of combined vector plus scalar energy depend on potentials in(1+1) dimensions space-time. The conditions of normalisation and continuity equation are calculated. The eigenfunctions and the corresponding eigenvalues are then determined. A numerical study is presented and the energy graphs for some values of the energy parameter are plotted.
基金B.C.Lütfüoğlu is grateful to Excellence project PřF UHK 2211/2023-2024 for the financial support。
文摘This manuscript investigates a Schwarzschild black hole surrounded by perfect fluid dark matter embedded in a cloud of strings.The effects of its surroundings on thermodynamics,timelike and null geodesics,shadows,and quasinormal modes are analyzed.It is demonstrated that changes in spacetime,induced by the surrounding environment,significantly influence the stability,thermal phases,energy dynamics,particle trajectories,and observable features of the black hole's shadow,as well as its oscillation frequency and decay rate.
基金Supported by the Internal Project(2023/2211)of Excellent Research of the Faculty of Science of Hradec Kralove University。
文摘Gravity models given by higher-order scalar curvature corrections are believed to bear important consequences. Einstein-Bel-Robinson (EBR) gravity with quartic curvature modification motivated Sajadi et al. to explore static spherically symmetric black hole solutions using perturbative methods. In this study, inspired by their work, we investigate AdS black hole shadows in EBR gravity and demonstrate how the gravity parameter alters the energy emission rate. Finally, we address the same problem in the presence of plasma, because the black holes are thought to be surrounded by a medium that changes the geodesic of photons.
