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- W3099408034 endingPage "1378" @default.
- W3099408034 startingPage "1366" @default.
- W3099408034 abstract "Hardness-intensity diagrams (HIDs) have been used with great success to study the accretion states and their connection to radio jets in X-ray binaries (XRBs). The analogy between XRBs and active galactic nuclei (AGN) suggests that similar diagrams may help to understand and identify accretion states in AGN and their connection to radio loudness. We construct ‘disc-fraction luminosity diagrams’ (DFLDs) as a generalization of HIDs, which plot the intensity against the fraction of the disc contribution in the overall spectral energy distribution (SED). Using a sample of 4963 Sloan Digital Sky Survey (SDSS) quasars with ROSAT matches, we show empirically that an AGN is more likely to have a high radio:optical flux ratio when it has a high total luminosity or a large non-thermal contribution to the SED. We find that one has to consider at least two-dimensional diagrams to understand the radio loudness of AGN. To extend our DFLD to lower luminosities we also include a sample of low-luminosity AGN. Using a simulated population of XRBs we show that stellar and supermassive BHs populate similar regions in the DFLD and show similar radio/jet properties. This supports the idea the AGN and XRBs have the same accretion states and associated jet properties." @default.
- W3099408034 created "2020-11-23" @default.
- W3099408034 creator A5018034654 @default.
- W3099408034 creator A5076922937 @default.
- W3099408034 creator A5082350417 @default.
- W3099408034 date "2006-11-01" @default.
- W3099408034 modified "2023-10-15" @default.
- W3099408034 title "Accretion states and radio loudness in active galactic nuclei: analogies with X-ray binaries" @default.
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