Observed jet power and radiative efficiency of black hole candidates in the Kerr+PFDM model Bakhtiyor Narzilloev, Ahmadjon Abdujabbarov, Bobomurat Ahmedov and Cosimo Bambi Eur. Phys. J. C, 84 9 (2024) 909 Published online: 09 September 2024 DOI: 10.1140/epjc/s10052-024-13256-w