Active galactic nucleus

Black hole

X-ray variability

Pan, Hai-Wu, Yuan, Weimin, Yao, Su, Komossa, S., Jin, Chichuan, Independent Estimation of Black Hole Mass for the γ-ray-detected Archetypal Narrow-line Seyfert 1 Galaxy 1H 0323+342 from X-Ray Variability, ApJ, 2018, 866, 69

Pan, Hai-Wu, Yuan, Weimin, Yao, Su, Zhou, Xin-Lin, Liu, Bifang, Zhou, Hongyan, Zhang, Shuang-Nan, Detection of a Possible X-Ray Quasi-periodic Oscillation in the Active Galactic Nucleus 1H 0707-495, ApJL, 2016, 819, L19

Hai-Wu Pan, Weimin, Yuan, Xin-lin Zhou, X.-B Dong & Bifang Liu, On the Black Hole Mass---X-ray Excess Variance Scaling Relation for Active Galactic Nuclei in the Low-mass Regime, ApJ, 2015, 808, 163-171