5 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…