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astro-ph.GA2025
Baseline-Aware Dependence fitting for DAmping Timescales (BADDAT): A Nearly Unbiased Approach to Constraining Optical Variability Dependence on Physical Properties of Active Galactic Nuclei
Ruisong Xia, Zhen-Yi Cai, Yongquan Xue +7
Active galactic nuclei (AGNs) exhibit stochastic optical variability, commonly characterized by a damped random walk. The damping timescale is of particular interest because it is…
astro-ph.HE2025
First Evidence for a QPO Triplet and Its Relativistic Precession Origin in RE J1034+396
Ruisong Xia, Yongquan Xue, Jialai Wang +1
Quasiperiodic oscillations (QPOs) in active galactic nuclei (AGNs) provide a powerful tool for probing the structure of the innermost accretion flow and corona around supermassive…
astro-ph.HE2025
Strong Amplitude Modulation of Hard-band X-ray QPO with Soft-band Flux in RE J1034+396
Ruisong Xia, Hao Liu, Yongquan Xue
The X-ray quasi-periodic oscillation (QPO) is a remarkable form of variability in systems of compact object accretion. RE J1034+396, harboring the most significant X-ray QPO in act…