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20132026
most citedA discrete time method to the first variation of fractional order variational functionals

70 citations

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astro-ph.HE2026

X-ray Quasi-Periodic Oscillations in Active Galactic Nuclei and Their Implications for the Changing Look Phenomenon

Mouyuan Sun, Shuying Zhou, Jihong Liu +12

X-ray timing of active galactic nuclei (AGN) provides a unique probe of gas accretion onto supermassive black holes (SMBHs). Quasi-periodic oscillations (QPOs), which trace gas dyn…