Probing the Growth of Supermassive Black Holes through Dual AGN at Cosmic Noon

A large population of AGN pairs residing in the same galaxy—the so-called dual AGN—is predicted to exist at redshifts z > 0.5. These systems are the progenitors of black hole mergers, making their census and properties fundamental for predicting the gravitational wave background and the event rates accessible to PTA experiments and the future LISA mission.