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Detection and characterization of quasiperiodic oscillations in the Seyfert galaxy NGC 4151
Yongkang, Yan; Peng, Zhang; Zhou, Lu +6 more
This study aims to detect and characterize quasiperiodic oscillations (QPOs) signals in x-ray observations of NGC 4151. We employed the weighted wavelet Z-transform and Lomb-Scargle periodogram methods for our analysis. QPO signals with frequencies of