Constraints on the magnetized Ernst black hole spacetime through quasiperiodic oscillations Sanjar Shaymatov, Mubasher Jamil, Kimet Jusufi and Kazuharu Bamba Eur. Phys. J. C, 82 7 (2022) 636 Published online: 23 July 2022 DOI: 10.1140/epjc/s10052-022-10560-1