BIB-VERSION:: AST-PP-v1.0
ID:: epreps.stsci//prep1202
ENTRY:: March 9, 1998
TITLE::  Accretion Disks in AGNs: UV and Optical Observations 
SUBTITLE:: 
AUTHOR:: Koratkar, Anuradha
AFFIL:: (1) Space Telescope Science Institute    3700 San Martin Drive    Baltimore, MD 21218    USA
DATE:: December 1997
JOURNAL:: To appear in: 
SUBMITTED::
ACCEPTED::
OTHER_ACCESS:: 
COPYRIGHT:: Copyright 1997 The Association of Universities for Research in Astronomy, Inc.  All Rights Reserved.
LANGUAGE:: English
ABSTRACT::

A fundamental component of the Active Galactic Nuclei paradigm is an
accretion disk. Yet, the nature of this accretion disk is not well
understood. The optically thick, geometrically thin accretion disk
has often been discussed in the literature. Here we discuss the key
predictions of this model and summarize all the observational data
connected with these predictions. Although the standard disk model
is attractive for its theoretical simplicity, many of the key predictions from this model are in disagreement with observations.

END:: epreps.stsci//prep1202