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5 papers · 1 filter
Repetitive Penrose process in Konoplya-Zhidenko rotating non-Kerr black holes
Xiao-Xiong Zeng, Dong-Ping Su, Ke Wang
This paper investigates the repetitive Penrose process in Konoplya-Zhidenko rotating non-Kerr black hole, exploring the influence of the deformation parameter on the repetitive Pen…
The shadows and photon rings of two minimal deformations of Schwarzschild black holes
Hong-Er Gong, Junlin Qin, Yusen Wang +4
This paper primarily investigates the optical characteristics of two minimal Schwarzschild black hole deformations, the Kazakov-Solodukhin and Ghosh-Kumar black holes, under differ…
Optical images of the Kerr-Sen black hole and thin accretion disk
Pei Wang, Sen Guo, Li-Fang Li +4
This paper investigates the observable properties of a Kerr-Sen black hole surrounded by a thin accretion disk, focusing on the impact of the black hole's spin and charge on the im…
Image of the time-dependent black hole
Yu Liang, Sen Guo, Kai Lin +3
The Event Horizon Telescope's 2024 observations report a shift in the position angle of the brightness asymmetry in M87*, revealing time variability in the black hole's image. In t…
Optical appearance of numerical black hole solutions in higher derivative gravity
Yu-Hao Cui, Sen Guo, Yu-Xiang Huang +2
The optical appearance of the numerically black hole solutions within the higher derivative gravity illuminated by an accretion disk context is discussed. We obtain solutions for n…