论文标题
高节奏的两年混响映射活动中的类星体PG 2130+099的宽线区域
Broad-line Region of the Quasar PG 2130+099 from a Two-Year Reverberation Mapping Campaign with High Cadence
论文作者
论文摘要
作为最有趣的Seyfert 1星系之一，PG 2130+099多年来一直是几次混响映射（RM）广告系列的目标。但是，其测量的宽H $β$线响应并不一致，时间滞后为$ \ sim $ 200天，$ \ sim $ 25天，$ \ sim $ \ sim $ \ sim $ $ \ sim $ 10天被报告给不同时期，而其光泽度的变化不超过40％。为了调查这个问题，我们在2017---2019期间进行了两年的同质和高节奏（约$ \ sim $ 3天）进行了新的RM挑战，以测量电离气体的运动学和结构。我们成功地检测到了相对于5100ÅContinuum的宽H $β$，He II，He I和Fe II线的时间滞后，这揭示了一个分层结构，在观察的第一年中可能被开普勒动力学病毒，但从二年级开始了宽线区域的易流动学。中央黑洞质量为$ 0.97 _ { - 0.18}^{+0.15} \ times 10^7〜m _ {\ odot} $，pg 2130+099的积聚率为$ 10^{2.1 \ pm0.5} l _ { EDD} $是Eddington的发光度，$ C $是光速，这意味着它是超级 - 埃德丁顿的增生器，可能具有纤薄的，而不是薄的吸积盘。这三个宽线的电离结构的快速变化仍然令人困惑。
As one of the most interesting Seyfert 1 galaxies, PG 2130+099 has been the target of several reverberation mapping (RM) campaigns over the years. However, its measured broad H$β$ line responses have been inconsistent, with time lags of $\sim$200 days, $\sim$25 days, and $\sim$10 days being reported for different epochs while its optical luminosity changed no more than 40%. To investigate this issue, we conducted a new RM-campaign with homogenous and high cadence (about $\sim$3 days) for two years during 2017--2019 to measure the kinematics and structure of the ionized gas. We successfully detected time lags of broad H$β$, He II, He I, and Fe II lines with respect to the varying 5100Åcontinuum, revealing a stratified structure that is likely virialized with Keplerian kinematics in the first year of observations, but an inflow kinematics of the broad-line region from the second year. With a central black hole mass of $0.97_{-0.18}^{+0.15}\times 10^7~M_{\odot}$, PG 2130+099 has an accretion rate of $10^{2.1\pm0.5}L_{\rm Edd}c^{-2}$, where $L_{\rm Edd}$ is the Eddington luminosity and $c$ is speed of light, implying that it is a super-Eddington accretor and likely possesses a slim, rather than thin, accretion disk. The fast changes of the ionization structures of the three broad lines remain puzzling.
