3CRR源中X射线发射的起源：来自中红外Spitzer观测的线索
The origin of X-ray emission in 3CRR sources: hints from mid-infrared Spitzer observations
摘要：
射电噪活动星系核的X射线发射是起源于盘冕还是喷流，目前仍存在争议。例如，在无线电宁静（RQ）活动星系核中的正相关关系（如光学与X射线光谱指数$α_{\rm {OX}}$和爱丁顿比$λ_{\rm {O}}$以及X射线光子指数$Γ$和$λ_{\rm {O}}$）在RLAGN中没有检测到。我们打算在这项工作中进一步研究这个问题。从3CRR星表中选取了27个发光源（包括16个类星体和11个高激发射电星系），重新研究了RLAGN的X射线辐射起源，其中X射线和中红外辐射通量分别由Chandra/XMM-Newton和Spitzer观测到。首次发现整个样品的中红外-X射线光谱指数$α_{\rm {IX}}$和$λ_{\rm {IR}}$之间存在显著的相关性，而类星体的$α_{\rm {OX}}$和$λ_{\rm {O}}$之间没有相关性。$L_{\rm {R}}$ - $L_{\rm {X}}$和$L_{\rm {UV}}$ - $L_{\rm {X}}$两个图之间存在很强的正相关关系，可以用盘-冠模型很好地拟合。然而，$Γ$和$λ_{\rm {IR}}$之间没有显著的关系。这可能与RLAGN中的大尺度磁场效应有关。我们认为高激发RLAGN中的X射线发射起源于盘冠系统。
英文摘要：
Whether X-ray emission in radio-loud (RL) active galactic nuclei (AGNs) originates from disk coronae or jets is still under debate. For example, the positive relationships in radio-quiet (RQ) AGNs (such as the optical to X-ray spectral index $α_{\rm {OX}}$ and Eddington ration $λ_{\rm {O}}$ as well as the X-ray photon index $Γ$ and $λ_{\rm {O}}$) are not detected in RLAGNs. We intend to further investigate this issue in this work. A sample of 27 luminous sources (including 16 quasars and 11 high-excitation radio galaxies) was selected from the 3CRR catalog to reinvestigate the origin of X-ray emission in RLAGNs, where the X-ray and mid-infrared fluxes are observed by Chandra/XMM-Newton and Spitzer, respectively. It is found for the first time that there is a significant relationship between the mid-infrared to X-ray spectral index $α_{\rm {IX}}$ and $λ_{\rm {IR}}$ for whole sample, while there is no relationship between $α_{\rm {OX}}$ and $λ_{\rm {O}}$ in quasars. There are strong positive relationships between both $L_{\rm {R}}$-$L_{\rm {X}}$ and $L_{\rm {UV}}$-$L_{\rm {X}}$ panels, which can be well fitted by the disk-corona model. However, there is no significant relationship between $Γ$ and $λ_{\rm {IR}}$. The possible reason is related to the effects of the large-scale magnetic field in RLAGNs. We suggest that the X-ray emission in high-excitation RLAGNs originates from a disk-corona system.
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。
