152 citations · 868 across the 31 of their papers we have counts for
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gr-qc2015★ 21 cited
Null geodesics and gravitational lensing in a nonsingular spacetime
Shao-Wen Wei, Yu-Xiao Liu, Chun-E Fu
In this paper, the null geodesics and gravitational lensing in a nonsingular spacetime are investigated. According to the nature of the null geodesics, the spacetime is divided int…
gr-qc2013
Black hole spectroscopy from null geodesics
Shao-Wen Wei, Yu-Xiao Liu, Chun-E Fu
The quasinormal mode frequencies can be understood from the massless particles trapped at the unstable circular null geodesics and slowly leaking out to infinity. Base on this view…