Shadows and quasinormal modes of a charged non-commutative black hole by different methods Zening Yan, Xiaoji Zhang, Maoyuan Wan and Chen Wu Eur. Phys. J. Plus, 138 5 (2023) 377 Published online: 03 May 2023 DOI: 10.1140/epjp/s13360-023-03978-3