2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/5811I summarize the main characteristics of AGNs in nearby galaxies and present a physical picture of their central engines.To appear in Active Galactic Nuclei: from Central Engine to Host Galaxy, ed. S. Collin, F. Combes, & I. Shlosman (San Francisco: ASP), in pressAstrophysicstext