Cuspy and fractured black hole shadows in a toy model with axisymmetry

Abstract Cuspy shadow was first reported for hairy rotating black holes, whose metrics deviate significantly from the Kerr one. The non-smooth edge of the shadow is attributed to a transition between different branches of unstable but bounded orbits, known as the fundamental photon orbits, which end...

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Bibliographic Details
Main Authors: Wei-Liang Qian, Songbai Chen, Cheng-Gang Shao, Bin Wang, Rui-Hong Yue
Format: Article
Language:English
Published: SpringerOpen 2022-01-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-022-10033-5