65 citations · 272 across the 10 of their papers we have counts for
11 papers
Energy Extraction via Magnetic Reconnection from Rotating ModMax Black Holes
Shi-Hao Wang, Ke-Jian He, Guo-Ping Li +1
Magnetic reconnection has been widely recognized as an important mechanism for extracting energy from rapidly rotating black holes. We find that magnetic reconnection can also effi…
Images from disk and spherical accretions of Bardeen black hole surrounded by perfect fluid dark matter
Hui Zeng, Yuan Meng
In this paper, we investigate the shadow and optical appearance of the Bardeen black hole surrounded by perfect fluid dark matter (PFDM) illuminated by various static accretions. F…
Exploring black holes with multiple photon spheres by interferometric signatures
Xi-Jing Wang, Yuan Meng, Xiao-Mei Kuang +1
In this paper, we investigate the interferometric signatures of hairy Schwarzschild black holes (hSBHs) that have either single or double photon spheres. Our interest mainly stems…
Effects of hair on the image of a rotating black hole illuminated by a thin accretion disk
Yuan Meng, Xi-Jing Wang, Yong-Zhuang Li +1
In this paper, we investigate the shadow and optical appearance of the hairy Kerr black hole illuminated by a thin accretion disk, the materials of which outside the innermost stab…
Distinguishing black holes with and without spontaneous scalarization in Einstein-scalar-Gauss-Bonnet theories via optical features
Xi-Jing Wang, Yuan Meng, Xiao-Mei Kuang +1
Spontaneous scalarization in Einstein-scalar-Gauss-Bonnet theory admits both vacuum-general relativity (GR) and scalarized hairy black holes as valid solutions, which provides a di…
Using the shadow of a black hole to examine the energy exchange between axion matter and a rotating black hole
Xiao-Mei Kuang, Yuan Meng, Eleftherios Papantonopoulos +1
We find that a \textit{slowly} rotating axion-modified black hole resulting from the backreaction of an axion field on a rotating Kerr black hole can have a \textit{D-shaped} shado…
Images of hairy Reissner-Nordström black hole illuminated by static accretions
Yuan Meng, Xiao-Mei Kuang, Xi-Jing Wang +2
We investigate the shadow and optical appearance of the hairy Reissner-Nordström (RN) black hole illuminated by two toy models of static accretion. The hairy RN black hole was cons…
Images from disk and spherical accretions of hairy Schwarzschild black holes
Yuan Meng, Xiao-Mei Kuang, Xi-Jing Wang +2
A hairy Schwarzschild black hole describes the deformation of Schwarzschild black hole due to including additional sources. It is found that depending on the hairy parameters, the…
Shadow revisiting and weak gravitational lensing with Chern-Simons modification
Yuan Meng, Xiao-Mei Kuang, Xi-Jing Wang +1
Dynamical Chern-Simons (dCS) gravity has been attracting plenty of attentions due to the fact that it is a parity-violating modified theory of gravity that corresponds to a well-po…
Rings and images of Horndeski hairy black hole illuminated by various thin accretions
Xi-Jing Wang, Xiao-Mei Kuang, Yuan Meng +2
We analyze the light rays around a static hairy black hole in Horndeski gravity with the use of ray-tracing procedure. We find that a stronger Horndeski hairy parameter corresponds…
Photon regions, shadow observables and constraints from M87* of a charged rotating black hole
Yuan Meng, Xiao-Mei Kuang, Zi-Yu Tang
Inspired by the observations of supermassive black hole M87* in \emph{Event Horizon Telescope }(EHT) experiment, a remarkable surge in black hole physics is to use the black hole s…