Cuspy and fractured black hole shadows in a toy model with axisymmetry Wei-Liang Qian, Songbai Chen, Cheng-Gang Shao, Bin Wang and Rui-Hong Yue Eur. Phys. J. C, 82 1 (2022) 91 Published online: 29 January 2022 DOI: 10.1140/epjc/s10052-022-10033-5