论文标题
具有宽带X射线光谱的AGN块状Tori的系统研究：AGN结构的更新统一图片
Systematic Study of AGN Clumpy Tori with Broadband X-ray Spectroscopy: Updated Unified Picture of AGN Structure
论文作者
论文摘要
我们介绍了与X射线块状圆环模型（XClumpy; Tanimoto etal。2019）的附近活性银河核（AGN）进行系统的宽带X射线光谱分析的结果。通过添加本文新分析的16个AGN，我们研究了28个AGN，包括从Ichikawa等人那里获得的未吸收和吸收的AGN。 （2015）和García-Bernete等。 （2019）。这是最大的样本，分别通过块状圆环模型XClumpy和Clumpy分析其X射线和红外光谱（Nenkova等，2008）。 Ricci等人发现的趋势。 （2017）基于统计分析。我们证实了Tanimoto等人的结果。 （2020）（1）由红外数据确定的圆环角宽度大于X射线数据，并且（2）氢柱密度与V波段灭绝的比率（$ n _ {\ rm h}/a _ {\ rm v} $）沿遮盖的Agns的视线相似。毫不掩饰的AGNS显示出比银河系相比，较小的视线$ n _ {\ rm h}/a _ {\ rm V} $比率。我们的发现可以通过更新的AGN结构的统一图片进行很好的解释，包括尘土飞扬的圆环，尘土飞扬的极性流出和无尘气，其中倾斜度决定了X射线和光学分类以及在X射线和红外带中观察到的圆环特性。
We present the results of a systematic, broadband X-ray spectral analysis of nearby active galactic nuclei (AGNs) with the X-ray clumpy torus model (XCLUMPY; Tanimoto et al. 2019). By adding 16 AGNs newly analyzed in this paper, we study total 28 AGNs including unabsorbed and absorbed AGNs taken from Ichikawa et al. (2015) and García-Bernete et al. (2019). This is the largest sample whose X-ray and infrared spectra are analyzed by the clumpy torus models XCLUMPY and CLUMPY (Nenkova et al. 2008), respectively. The relation between the Eddington ratio and the torus covering factor determined from the X-ray torus parameters of each object follows the trend found by Ricci et al. (2017) based on a statistical analysis. We confirm the results by Tanimoto et al. (2020) that (1) the torus angular widths determined by the infrared data are larger than those by the X-ray data and that (2) the ratios of the hydrogen column density to V-band extinction ($N_{\rm H}/A_{\rm V}$) along the line of sight in obscured AGNs are similar to the Galactic value on average. Unobscured AGNs show apparently smaller line-of-sight $N_{\rm H}/A_{\rm V}$ ratios than the Galactic one. Our findings can be well explained by an updated unified picture of AGN structure including a dusty torus, dusty polar outflows, and dust-free gas, where the inclination determines the X-ray and optical classifications and observed torus properties in the X-ray and infrared bands.
