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Paper: The Optical-to-X-ray Spectral Energy Distribution of Soft X-ray Selected AGN with Swift
Volume: 427, Accretion and Ejection in AGN: a Global View
Page: 86
Authors: Grupe, D.; Komossa, S.; Leighly, K. M.
Abstract: We present the results of our intensive observing campaign of 91 soft X-ray selected AGN with Swift which we started in 2005. This is the largest AGN sample with simultaneous optical to X-ray observations to study the spectral energy distribution of AGN. The principal motivation of this study is to understand the spectral energy distributions of AGN in the optical/UV to X-ray regime and to provide bolometric corrections which are important in determining the Eddington ratio L/LEdd. We find strong correlations between the X-ray spectral slope α and the optical/UV spectral slope αUV with L/LEdd. We notice a saturation in the αX - L/LEdd relation for AGN with X-ray pectral slopes steeper than ≈ 1.6. A strong anti-correlation between αUV and L/LEdd is found with an offset between Narrow-Line Seyfert 1s and Broad-Line Seyfert 1s.
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