Charged Yukawa-modified black holes: Electric Penrose, Bremsstrahlung radiation and collisions of charged particles

In this paper, we obtain a charged Yukawa black hole solution in scalar-vector-tensor gravity (STVG), known as modified gravity (MOG). The aim of this study is to explore how the presence of the STV field modification and an additional Yukawa field impact particle dynamics, energy extraction, particle collisions, and radiation. After deriving the solution for a charged black hole surrounded by a Yukawa field, we analyze the motion of charged test particles in the equatorial plane, the effective potential, specific energy, and angular momentum as functions of the Yukawa parameters and particle charge, including the location of the innermost stable circular orbits (ISCOs). Our results indicate that the Yukawa coupling strength and the MOG field shift the ISCO outward. We also study the electric Penrose process involving charged particles near the black hole horizon. It is found that the inclusion of the Yukawa field enhances the process efficiency. Collisions of charged particles near the horizon are also studied by calculating the center-of-mass energy, which shows that the presence of the Yukawa coupling significantly amplifies the collision energy. Finally, the radiation luminosity of charged particles orbiting black holes via Bremsstrahlung is investigated and compared with the Reissner-Nordström case. This comparison suggests that Yukawa-field modifications leave observable imprints on orbital dynamics, energy extraction, and radiation, enabling the testing of modified gravity via astrophysical measurements.