Published in "Physics of Active Galactic Nuclei at all
Scales", eds. Danielle Alloin, Rachel Johnson and Paulina Lira. Lecture
Notes in Physics, Vol. 693, p.77, 2006.
For a PDF version of the article, click here.
Abstract: We review the basic observed and inferred properties of the broad emission-line region in AGNs, as well as the basics of the reverberation-mapping technique that can be used to determine the size and structure of the region. We argue that the current best evidence points to a multi-component line-emitting region, with a disk-like structure, possibly an extension of the accretion disk itself, and a disk wind being strong candidates for the origin of the broad-line emission.
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