论文标题
活跃银河核的宽线区域中的螺旋臂。 I.紧紧伤口病例的混响和差分干涉信号
Spiral Arms in Broad-line Regions of Active Galactic Nuclei. I. Reverberation and Differential Interferometric Signals of Tightly Wound Cases
论文作者
论文摘要
作为活性银河核光谱的主要特征，宽阔的发射线提供了四个中央超级黑洞（SMBHS）的电离气体的运动学和空间分布的信息，即所谓的宽线区域（BLRS）。越来越多的证据证明BLR中螺旋臂的外观。回响映射（RM）广告系列表明，BLR的特征半径与增生磁盘的自我散布区域重叠。在WKB近似的框架中，我们显示了螺旋臂观察特征的鲁棒性能。由此产生的螺旋臂导致宽发射线的各种轮廓。我们计算$ M = 1 $模式螺旋臂的BLR的RM和差分干涉特征。这些特征可以通过高质量的RM和差分干涉测量值来检测到重力，例如重力非常大的望远镜干涉仪。 WKB近似将来将在未来放松和普遍，以探索RM运动和差异光检查观察中更普遍的密度波信号案例。
As a major feature in spectra of active galactic nuclei, broad emission lines deliver information of kinematics and spatial distributions of ionized gas surrounding the central supermassive black holes (SMBHs), that is the so-called broad-line regions (BLRs). There is growing evidence for appearance of spiral arms in the BLRs. It has been shown by reverberation mapping (RM) campaigns that the characterized radius of BLRs overlaps with that of self-gravitating regions of accretion disks. In the framework of the WKB approximation, we show robust properties of observational features of the spiral arms. The resulting spiral arms lead to various profiles of the broad emission line. We calculate RM and differential interferometric features of BLRs with $m=1$ mode spiral arms. These features can be detected with high-quality RM and differential interferometric observations via such as GRAVITY onboard Very Large Telescope Interferometer. The WKB approximation will be relaxed and universalized in the future to explore more general cases of density wave signals in RM campaigns and differential spectroastrometry observations.
