论文标题
通过一种新方法测量AGN升华半径：宽线极化的回响映射
Measuring the AGN sublimation radius with a new approach: reverberation mapping of the broad line polarization
论文作者
论文摘要
在这里，我们提供了一种观察方法，用于测量赤道散射区域半径，使用1型活性银河核（AGNS）中极化线中的变异性。 1型AGN的宽线中的极化主要是由赤道散射引起的，在赤道散射中，特定特征使其贡献与总偏振通量分开。我们建议监测极化线通量中的变异性，并找到非极化连续体和极化宽线变异性之间的时间滞后。然后可以从时间延迟确定到散射屏幕的距离。该方法首次应用于1型AGN MRK 6的观察结果，我们发现该AGN中散射区域的大小约为100光天。这明显小于红外干涉测量值估计的尘土区域大小，并且比已知的宽线区域（BLR）大小还要大。这表明散射区域位于BLR和灰尘区域之间，可以用作灰尘升华半径的探针。
Here we give an observational method for measurements of the equatorial scattering region radius using variability in the polarized broad lines in Type 1 active galactic nuclei (AGNs). The polarization in broad lines of Type 1 AGNs is mostly caused by equatorial scattering, where specific features allow one to separate its contribution from the total polarized flux. We propose to monitor variability in the polarized line flux and find the time lag between the nonpolarized continuum and polarized broad line variability. The distance to the scattering screen can then be determined from the time delay. The method was, for the first time, applied to the observations of the Type 1 AGN Mrk 6, and we found that the size of the scattering region in this AGN is around 100 light days. That is significantly smaller than the dusty region size estimated by the infrared interferometric observations and also larger than known broad line region (BLR) size. This indicates that the scattering region lies between the BLR and the dusty region and could be used as a probe of the dust sublimation radius.
