解析引力透镜AGN MGB2016 +112的复杂内部X射线结构
Resolving Complex Inner X-ray Structure of the Gravitationaly Lensed AGN MGB2016+112
摘要：
我们使用钱德拉X射线观测的引力透镜系统MGB 2016 +112在z=3.273，以阐明存在至少两个X射线源。我们发现这些源与\citet{Spingola19}测量的VLBI分量一致，它们之间的距离为$\sim 200$ pc。它们的本征0.5 - 7 keV源框架亮度分别为2.6 $\times$ 10 $^{43}$和4.2 $\times$ 10 $^{44}$ erg s $^{-1}$。这个系统很可能包含一个双重活动星系核（AGN），但我们可能探测到的是一个活动星系核加上一个pc尺度的X射线喷流，后者位于一个非常高放大率的区域。四重透镜X射线源与VLBI对应源的距离在$\pm$ 40 pc（1 $σ$）以内。使用引力透镜作为望远镜，和一个新的统计应用，我们已经取得了前所未有的精度测量公制距离在这么大的红移在X射线天文学，这是几十个质量，如果源位于焦散线附近，而它是数百个质量，如果源是在一个较低的放大率的区域。这种方法的当前演示对未来大量透镜系统的X射线调查具有影响。
英文摘要：
We use a Chandra X-ray observation of the gravitationally lensed system MGB2016+112 at z=3.273 to elucidate presence of at least two X-ray sources. We find that these sources are consistent with the VLBI components measured by \citet{Spingola19}, which are separated by $\sim 200$ pc. Their intrinsic 0.5 -- 7 keV source frame luminosities are 2.6$\times$10$^{43}$ and 4.2$\times$10$^{44}$ erg s$^{-1}$. Most likely this system contains a dual active galactic nucleus (AGN), but we possibly are detecting an AGN plus a pc-scale X-ray jet, the latter lying in a region at very high magnification. The quadruply lensed X-ray source is within $\pm$40 pc (1$σ$) of its VLBI counterpart. Using a gravitational lens as a telescope, and a novel statistical application, we have achieved unprecedented accuracy for measuring metric distances at such large redshifts in X-ray astronomy, which is tens of mas if the source is located close to the caustics, while it is of hundreds of mas if the source is in a region at lower amplification. The present demonstration of this approach has implications for future X-ray investigations of large numbers of lensed systems.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
