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The Reliability of Accretion Disk Inclination Derived from X-ray Spectroscopy of Active Galaxies by Du, Rong; Ding, Yuanze; Ho, Luis C.; Li, Ruancun is a scholarly article available to read on EtoBox.

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The inclination angle of substructures in active galaxies gives insights into physical components from scales of the vicinity of the central black hole to the entire host galaxy. We use the self-consistent reflection spectral model \textsc{RELXILL} to measure the inclination of the inner region of accretion disks with broadband ($0.3-78\,\rm keV$) X-ray observations, systematically studying the reliability of this methodology. To test the capability of the model to return statistically consistent results, we analyze multi-epoch, joint XMM-Newton and NuSTAR data of the narrow-line Seyfert~1 galaxy I\,Zwicky\,1 and the broad-line radio galaxy 3C\,382, which exhibit different degrees of spectral complexity and reflection features. As expected, we find that adding more data for analysis narrows the confidence interval and that multi-epoch, joint observations return optimal measurements; however, even single-epoch data can be well-fitted if the reflection component is sufficiently dominant. Mock spectra are used to test the capability of \textsc{RELXILL} to recover input parameters from typical single-epoch, joint observations. We find that inclination is well-recovered at 90\% confiden

Author

Du, Rong; Ding, Yuanze; Ho, Luis C.; Li, Ruancun

Published

2024

Language

EN