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Article overview
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Black holes in Active Galactic Nuclei: observations | Greg M. Madejski
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10 Mar 1999 | Subject: | astro-ph | Affiliation: | NASA/Goddard | Abstract: | This paper summarizes the observations which provide the best evidence for the presence of black holes in active galactic nuclei. This includes: X-ray variability; kinematical studies using optical emission lines as well as the distribution of megamaser spots; and the shape of the Fe K$alpha$ X-ray emission line. It also presents the current status of our understanding of jet-dominated active galaxies (blazars), and briefly reviews the currently popular AGN ``Unification Schemes.’’ | Source: | arXiv, astro-ph/9903141 | Services: | Forum | Review | PDF | Favorites |
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