论文标题
用极端紫外线（EUV）赤字来限制磁性逮捕磁盘（MAD）的X射线排放（MAD）
Constraining X-ray emission of magnetically arrested disk (MAD) by radio-loud AGNs with extreme ultraviolet (EUV) deficit
论文作者
论文摘要
目标。认为具有EUV不足的活性银河核（AGNS）被认为是由黑洞周围的疯狂供电的，在黑洞周围，EUV光谱的斜率（$α_ {\ rm euv} $）与喷气效率具有良好的正相关关系。在这项工作中，我们首次研究了具有EUV赤字的AGN中X射线排放的特性。方法。我们构建了15个具有EUV缺陷对象的样本，以分析其X射线发射。 13个对象中的X射线光度是由我们自己新处理的，而其他2个来源是从档案数据中收集的。结果。发现具有EUV不足的AGN的平均X射线通量比射电优惠AGN（RQAGNS）大4.5倍，而光学 - UV发光度（$ l _ {\ rm uv uv} $）之间的关系斜率是X射线luminosity和x-ray luminosive（$ lm _ {$ _ {q rm x} $）。为了进行比较，没有EUV赤字的无线电大风AGN（RLAGNS）的平均X射线通量大约是RQAGNS的平均X射线通量约2-3倍。还报告了$α_ {\ rm euv} $与无线电（$ r _ {\ rm UV} $）之间的强正相关。但是，$ l _ {\ rm x} $与无线电发光度（$ l _ {\ rm rm r} $）之间没有牢固的关系。结论。 X射线发射的X射线发射的过剩和具有EUV缺陷的X射线发射和强大的$α_ {\ rm euv} $ - $ r _ {\ rm UV} $关系可以用疯狂的场景来定性地解释，这可以帮助限制疯狂的理论模型。
Aims. Active galactic nuclei (AGNs) with EUV deficit are suggested to be powered by a MAD surrounding the black hole, where the slope of EUV spectra ($α_{\rm EUV}$) is found to possess a well positive relationship with the jet efficiency. In this work, we investigate the properties of X-ray emission in AGNs with EUV deficit for the first time. Methods. We construct a sample of 15 objects with EUV deficit to analyse their X-ray emission. The X-ray luminosity in 13 objects are newly processed by ourself, while the other 2 sources are gathered from archival data. Results. It is found that the average X-ray flux of AGNs with EUV deficit are 4.5 times larger than that of radio-quiet AGNs (RQAGNs), while the slope of relationship between the optical-UV luminosity ($L_{\rm UV}$) and the X-ray luminosity ($L_{\rm X}$) is found to be similar with that of RQAGNs. For comparison, the average X-ray flux of radio-loud AGNs (RLAGNs) without EUV deficit is about 2-3 times larger than that of RQAGNs. A strong positive correlation between $α_{\rm EUV}$ and radio-loudness ($R_{\rm UV}$) is also reported. However, there is no strong relationship between $L_{\rm X}$ and the radio luminosity ($L_{\rm R}$). Conclusions. Both the excess of X-ray emission of RLAGNs with EUV deficit and the strong $α_{\rm EUV}$-$R_{\rm UV}$ relationship can be qualitatively explained with MAD scenario, which can help to constrain the theoretical model of MAD.
