Emission-Line versus Continuum Correlations in Active Galactic Nuclei
Abstract
The Baldwin effect, a negative correlation between emission-line equivalent width and luminosity in active galactic nuclei, is still of interest as a diagnostic of accretion physics nearly thirty years after its discovery. This review examines recent developments in the study of correlations between line and continuum emission in AGNs, as measured both in ensembles and in individual sources.
- Publication:
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The Central Engine of Active Galactic Nuclei
- Pub Date:
- October 2007
- DOI:
- arXiv:
- arXiv:astro-ph/0612613
- Bibcode:
- 2007ASPC..373..355S
- Keywords:
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- Astrophysics
- E-Print:
- 10 pages, 2 figures, Conference proceedings to appear in "The Central Engine of Active Galactic Nuclei," ed. L. C. Ho and J.-M. Wang (San Francisco: ASP)