Updated Picture of the Active Galactic Nuclei with Dusty/Dust-free Gas Structures and Effects of the Radiation Pressure

This study investigates the properties of two gas structures of X-ray selected active galactic nuclei (AGNs), that is, dusty and dust-free gas components, by separating them with the line-of-sight dust extinction (\(A_V\)) and the neutral gas column density (\(N_{\mathrm{H}}\)). The typical column density of the dusty and dust-free gas differs depending on the Seyfert type, indicating that both structures have anisotropic column density distributions. The number of targets with the dusty gas column density (\(N_{\mathrm{H,d}}\)) of \(\log N_{\mathrm{H,d}}\ [\mathrm{cm^{-2}}]>23\) is much smaller than that with the same column density of the dust-free gas. This result indicates that the optically-thick part of the dusty gas structure is very thin. There are very few targets with a larger Eddington ratio (\(f_{\mathrm{Edd}}\)) than the effective Eddington limit of the dusty gas and the covering factor of the dusty gas with \(22\leq \log N_{\mathrm{H,d}}\ [\mathrm{cm^{-2}}]