X-ray spectral-timing variability of 1A 0535+262 during the 2020 giant outburst P. Reig, R. C. Ma, L. Tao, S. Zhang, S. N. Zhang and V. Doroshenko A&A, 659 (2022) A178 Published online: 24 March 2022 DOI: 10.1051/0004-6361/202142716