Title: Investigating the Variable Continuum Lags in PG 2130+099 Show Chinese title

Title: 研究PG 2130+099中的可变连续滞后

Abstract: Broadband photometric reverberation mapping (RM) provides a measure of the size of the continuum-emitting region in active galactic nuclei (AGN). Previous monitoring campaigns of PG 2130+099 disagree as to whether the continuum emitting region size is consistent with that predicted for a standard optically thick geometrically thin accretion disk. We present $\sim$6 months of observations from several robotic telescopes, providing the highest cadence and widest wavelength coverage photometric RM study of PG 2130+099 to date. Our results indicate that inferred size of the continuum-emitting region in PG 2130+099, like many recently observed AGN, is larger than the simplest predictions for an irradiated geometrically thin, optically thick accretion disk. We also perform a flux-flux analysis, finding a variable spectrum broadly consistent with a disk, and a constant component with enhanced $\textit{i}$-band emission, potentially due to H$\alpha$. We find some evidence of increasing lag with luminosity, but previous lag measurements are too uncertain to be definitive. Show Chinese abstract

Abstract: 宽波段测光反响映射（RM）提供了一种测量活动星系核（AGN）连续光源发射区大小的方法。之前关于PG 2130+099的监测活动对于连续光源发射区的大小是否与标准几何薄且光学厚吸积盘的预测一致存在分歧。 我们展示了来自几个机器人望远镜的$\sim$个月的观测数据，这是迄今为止对PG 2130+099进行的最高频率采样和最宽波长覆盖的测光反响映射研究。 我们的结果表明，PG 2130+099中推断出的连续光源发射区的大小，如同许多最近观测到的AGN一样，比一个受照几何薄、光学厚吸积盘的最简单预测值更大。 我们还进行了流量-流量分析，发现了一个大致符合盘状模型的可变光谱，以及一个具有增强$\textit{i}$波段发射的恒定成分，这可能是由于H$\alpha$引起的。 我们发现了一些随着亮度增加而滞后增大的证据，但之前的滞后测量结果过于不确定，无法得出明确结论。