2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/13908I review the dynamics of galaxy mergers, paying particular attention to the triggering of gaseous inflows and onset of ultraluminous activity in galaxies.10 pages, 3 embedded figures. Invited contribution for the Ringburg Workshop "Ultraluminous Galaxies: Monsters or Babies?" (September 1998)Astrophysicstext