3 papers
gr-qc2026
Shadow of a circular disformal Kerr black hole beyond GR
Fen Long, Songbai Chen, Jiliang Jing
We have studied the shadows of a circular disformal Kerr black hole with a deformation parameter, which represents a rotating solution within a generalized scalar-tensor framework…
gr-qc2025
Quasinormal Modes of a Massive Scalar Field in Slowly Rotating Einstein-Bumblebee Black Holes
Weike Deng, Wentao Liu, Fen Long +2
In this study, we examine the impacts of black hole spin, Lorentz-violating parameter, and the scalar field's mass on quasinormal modes (QNMs) of rotating Einstein-Bumblebee black…
gr-qc2025
Magnetic reconnection and energy extraction from a Konoplya Zhidenko rotating non Kerr black hole
Fen Long, Shangyun Wang, Songbai Chen +1
Recently, magnetic reconnection has attracted considerable attention as a novel energy extraction mechanism, relying on the rapid reconnection of magnetic field lines within the er…