Probing AGN inner structure with X-ray obscured type 1 AGN
Probing AGN inner structure with X-ray obscured type 1 AGN
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DOI：
10.1093/mnras/sty1751
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发表时间：
2018-07
影响因子：
4.8
通讯作者：
Teng Liu（刘腾）;A. Merloni;Jun-Xian Wang（王俊贤）;P. Tozzi;Yue Shen;M. Brusa;M. Salvato;K. Nandra;J. Comparat;Zhu Liu;G. Ponti;D. Coffey
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文献类型：
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作者：
Teng Liu（刘腾）;A. Merloni;Jun-Xian Wang（王俊贤）;P. Tozzi;Yue Shen;M. Brusa;M. Salvato;K. Nandra;J. Comparat;Zhu Liu;G. Ponti;D. Coffey
利用XMM-XXL北巡的X射线选择活动星系核（AGN）和SDSS重子振荡谱巡天（BOSS）对它们的光谱跟踪，比较了X射线无遮蔽和遮蔽宽线AGN的性质（BLAGN 1和BLAGN 2;$N_\textrm{H}$低于和高于$10^{21.5}$ cm$^{-2}$），包括它们的X射线光度$L_X$，黑洞质量，爱丁顿比$\lambda_{\textrm{Edd}}$，光学连续谱和线特征。我们发现，BLAGN 2有系统的更大的宽线宽，因此显然更高（低）$M_{\textrm{BH}}$（$\lambda_{\textrm{Edd}}$）比BLAGN 1。我们还发现，在BLAGN的X射线遮蔽往往符合光学尘埃消光，这是光学薄于窄线活动星系核（NLAGN），并可能部分覆盖到宽线区。所有的结果都可以解释的框架内的多组件，cluptorus模型解释BLAGN 2作为一个中间类型之间的BLAGN 1和NLAGN的中间倾角。
Using the X-ray-selected active galactic nuclei (AGN) from the XMM-XXL north survey and the SDSS Baryon Oscillation Spectroscopic Survey (BOSS) spectroscopic follow-up of them, we compare the properties of X-ray unobscured and obscured broad-line AGN (BLAGN1 and BLAGN2; $N_\textrm{H}$below and above $10^{21.5}$ cm$^{-2}$), including their X-ray luminosity $L_X$, black hole mass, Eddington ratio $\lambda_{\textrm{Edd}}$, optical continuum and line features. We find that BLAGN2 have systematically larger broad line widths and hence apparently higher (lower) $M_{\textrm{BH}}$ ($\lambda_{\textrm{Edd}}$) than BLAGN1. We also find that the X-ray obscuration in BLAGN tends to coincide with optical dust extinction, which is optically thinner than that in narrow-line AGN (NLAGN) and likely partial-covering to the broad line region. All the results can be explained in the framework of a multi-component, clumpy torus model by interpreting BLAGN2 as an intermediate type between BLAGN1 and NLAGN in terms of an intermediate inclination angle.