论文标题
HST/cos观察500-1050Å休息框架中的类星体流出：ii迄今为止测量的最有活力的类星体流出
HST/COS Observations of Quasar Outflows in the 500 -- 1050 Å Rest Frame: II The Most Energetic Quasar Outflow Measured to Date
论文作者
论文摘要
我们介绍了一项对剩下的框架500-1050 $Å$（EUV500）区域中的类星体SDSS J1042+1646（Z = 0.978）中的BAL流出的研究。结果基于对最近哈勃太空望远镜/宇宙起源光谱仪观测值的分析。确定了五个流出系统，其中总共包括$ \ sim $ 70的离子过渡中的$ 70流出槽。这些包括从O V*，NE V*，AR VI，CA VI，CA VII和CA VIII的转变中的第一个非微尔检测。在所有流出中，非常高的电场化物种（例如NE VIII，Na IX和Mg X）的出现必须至少需要至少两个离子化阶段来进行观察到的流出阶段。我们开发了一种交互式合成光谱仿真方法，以适合众多观察到的槽。检测密度敏感的槽（例如S IV* $λ$ 657.32 $Å$和O V*多重组）使我们能够确定流出（$ R $）的距离及其能量。其中两个外流为$ r $ $ \ simeq $ 800 pc，一个是$ r $ $ \ simeq $ 15 PC。流出之一具有记录的最高动力学光度（$ \ dot {e_ {k}} $ = 5 \ times 10^{46} $ erg S $^{ - 1} $），是其埃德丁顿亮度的20％。这样的大比例表明，这种流出可以为主动银河核反馈机制提供所需的能量。
We present a study of the BAL outflows seen in quasar SDSS J1042+1646 (z = 0.978) in the rest-frame 500 -- 1050 $Å$ (EUV500) region. The results are based on the analysis of recent Hubble Space Telescope/Cosmic Origins Spectrograph observations. Five outflow systems are identified, where in total they include $\sim$70 outflow troughs from ionic transitions. These include the first non-solar detections from transitions of O V*, Ne V*, Ar VI, Ca VI, Ca VII, and Ca VIII. The appearance of very high-ionization species (e.g., Ne VIII, Na IX, and Mg X) in all outflows necessitates at least two-ionization phases for the observed outflows. We develop an interactive Synthetic Spectral Simulation method to fit the multitude of observed troughs. Detections of density sensitive troughs (e.g., S IV* $λ$ 657.32 $Å$ and the O V* multiplet) allow us to determine the distance of the outflows ($R$) as well as their energetics. Two of the outflows are at $R$ $\simeq$ 800 pc and one is at $R$ $\simeq$ 15 pc. One of the outflows has the highest kinetic luminosity on record ($\dot{E_{k}}$ $ = 5\times 10^{46}$ erg s$^{-1}$), which is 20% of its Eddington luminosity. Such a large ratio suggests that this outflow can provide the energy needed for active galactic nucleus feedback mechanisms.
