Abstract
Active galactic nuclei (AGNs) provide a dense, gas-rich environment where stars and compact objects can undergo migration, capture, accretion, and mergers under conditions distinct from those in gas-poor stellar systems. These gas-assisted dynamical processes can reshape the evolution of black holes, neutron stars, and stars in galactic nuclei, giving rise to a diverse population of nuclear transients and multimessenger sources. In this talk, I will discuss recent progress in understanding how AGN disks regulate compact object pairing, orbital evolution, and interactions with the surrounding gas. I will show how this framework can naturally link stellar-mass black hole mergers, tidal disruption events, quasi-periodic eruptions, and other nuclear transients, while also producing potential electromagnetic counterparts to gravitational-wave sources. By connecting theoretical modeling with observations across electromagnetic and gravitational wave bands, I will highlight how galactic nuclei can serve as laboratories for studying compact object growth, accretion physics, and the origin of transient phenomena in the multimessenger era.
Anyone interested is welcome to attend.