A mysterious dip in iron's glow reveals a galactic wind from a supermassive black hole

An unexpectedly weak iron line in the radio galaxy 3C 111 hints at a high-speed ionized wind absorbing X-rays as it flows outward from near the black hole. The wind reaches velocities of 4,600–17,200 km/s and carries kinetic power of 10⁴¹–10⁴⁴ erg/s, roughly 100 times weaker than the jet itself. This supports the long-standing prediction that jets dominate the energy budget over disk-driven winds in active galaxies.