Supermassive Black Holes in Active Galactic Nuclei
arXiv:astro-ph/0003267 · doi:10.1888/0333750888/2365
Abstract
This article gives a brief overview of the direct and indirect evidence in support of the standard paradigm that active galactic nuclei are powered by supermassive black holes.
A review to appear in The Encyclopedia of Astronomy and Astrophysics (Institute of Physics Publishing). TeX, 13 pages, including embedded figures