Speaker
Description
This study investigates the quasi-periodic oscillation (QPO) observed in the X-ray emission of the active galactic nucleus (AGN) RE J1034+396. Since QPOs are rare in AGNs and are thought to be closely related to the structure of the accretion disk and its surrounding physical environment, this source provides an important opportunity to explore their physical origin. The main goal of this work is to examine whether QPOs are associated with spectral line variability. We preliminarily divide a QPO cycle into high-flux and low-flux intervals. The spectral continuum and absorption lines exhibit significant phase dependency, with the QPO variability is dominated in the 1-3 keV energy range. These findings suggest that this energy range contains key spectral information related to the QPO. We will further investigate the identified absorption features and compare different observations to examine their temporal evolution and variability.
| Participate the oral/poster presentation award competition | Yes |
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