44 citations · 98 across the 4 of their papers we have counts for
4 papers
Hilbert-Huang Transform analysis of quasi-periodic oscillations in MAXI J1820+070
Wei Yu, Qing-Cui Bu, Zi-Xu Yang +14
We present time-frequency analysis, based on the Hilbert-Huang transform (HHT), of the evolution on the low-frequency quasi-periodic oscillations (LFQPOs) observed in the black hol…
A spectral-timing study of the inner flow geometry in MAXI J1535--571 with -HXMT and NICER
Wei Yu, Qing-Cui Bu, He-Xin Liu +48
We have performed a spectral-timing analysis on the black hole X-ray binary MAXI J1535--571 during its 2017 outburst, with the aim of exploring the evolution of the inner accretion…
An X-ray periodicity of 1.8 hours in a narrow-line Seyfert 1 galaxy Mrk 766
Peng Zhang, Peng-fei Zhang, Jing-zhi Yan +2
In the narrow-line Seyfert 1 galaxy Mrk 766, a Quasi-Periodic Oscillation (QPO) signal with a period of s is detected in the \emph{XMM-Newton} data collected on 2005 May…
Two transient X-ray Quasi-Periodic Oscillations separated by an intermediate state in 1H 0707-495
Peng-Fei Zhang, Peng Zhang, Neng-Hui Liao +3
In the narrow-line Seyfert 1 galaxy 1H 0707-495, recently a transient quasi-periodic oscillation (QPO) signal with a frequency of Hz has been detected at a…