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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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