论文标题
无线电主动银河核是否反映X射线二元光谱状态？
Do Radio Active Galactic Nuclei Reflect X-ray Binary Spectral States?
论文作者
论文摘要
近年来，有越来越多的证据表明，活跃银河系核（AGN）和恒星质量黑洞中的超质量黑洞具有相似的观察性特征：积聚磁盘，X射线电晕和相关性喷气机的热发射。此外，已经研究了AGN是否具有与X射线二进制文件（XRB）相似的光谱状态以及使用硬度强度图（HID）之间在两者之间绘制哪些相似之处的光谱状态。为了解决AGN喷气机是否可能与XRB中的增生状态有关，我们探讨了根据他们的无线电喷射形态分类（Fanaroff-Riley I和II和II级； I和II； Fr I和II），激发班（HERG和LERG），以及无线电喷气范围（紧凑至巨型）是否占据了不同的区域的差异（巨大的区域），是否属于Agn难度（巨大的区域）。我们通过将15个射电星系目录与文献的所需特征与XMM Newton和Swift X射线和紫外线（UV）源目录相关联。我们计算X射线和紫外光度法的光度和硬度，将源放在AGN硬度强度图上，并搜索与XRB光谱态HID的种群和类比的分离。我们发现（a）fr IS和IIS，（b）Hergs和lergs，（c）fr i-lergs和fr II-Hergs在统计学意义的水平上占据了不同的HID区域（p值<0.05），并且没有明确的证据证明不同无线电喷射线性之间的人口区分。在这项工作中，I-Lerg和Fr II-Herg种群之间的分离是最强的。我们的结果表明，根据形态和激发类别的不同，无线电大风AGN占据了隐藏的不同区域，显示出与XRB的强烈相似性。
Over recent years there has been mounting evidence that accreting supermassive black holes in active galactic nuclei (AGN) and stellar mass black holes have similar observational signatures: thermal emission from the accretion disk, X-ray corona, and relativisitic jets. Further, there have been investigations into whether or not AGN have spectral states similar to that of X-ray binaries (XRBs) and what parallels can be drawn between the two using a hardness-intensity diagram (HID). To address whether AGN jets might be related to accretion states as in XRBs, we explore whether populations of radio-AGN classified according to their radio jet morphology (Fanaroff-Riley classes I and II; FR I and II), excitation class (HERG and LERG), and radio jet linear extent (compact to giant) occupy different and distinct regions of the AGN hardness-intensity diagram (total luminosity vs. hardness). We do this by cross correlating 15 catalogs of radio galaxies with the desired characteristics from the literature with XMM Newton and Swift X-ray and ultraviolet (UV) source catalogs. We calculate the luminosity and hardness from the X-ray and UV photometry, place the sources on the AGN hardness-intensity diagram, and search for separation of populations and analogies with the XRB spectral state HID. We find that (a) FR Is and IIs, (b) HERGs and LERGs, (c) FR I-LERGs and FR II-HERGs occupy distinct areas of the HID at a statistically significant level (p-value < 0.05) and no clear evidence for population distinction between the different radio jet linear extents. The separation between FR I-LERG and FR II-HERG populations is the strongest in this work. Our results indicate that radio-loud AGN occupy distinct areas of the HID depending on the morphology and excitation class, showing strong similarities to XRBs.
