The inner flow geometry in MAXI J1820+070 during hard and hard-intermediate states B. De Marco, A. A. Zdziarski, G. Ponti, G. Migliori, T. M. Belloni, A. Segovia Otero, M. A. Dziełak and E. V. Lai A&A, 654 (2021) A14 Published online: 01 October 2021 DOI: 10.1051/0004-6361/202140567