Dyson-like Megastructures Around Stellar-Mass Black Holes: Accretion Disks as Power Stations for Advanced Civilizations
To the point
Building on Freeman Dyson's idea, researchers propose a Dyson-like megastructure around a stellar-mass black hole to harvest energy from the accretion flow and jets, which could far exceed a Sun-like star's power and potentially fuel a civilization past the Type II stage, though the plan remains highly speculative and requires unimaginable engineering.