Zhu Liu

activity

20142023

most citedObscuration-dependent evolution of Active Galactic Nuclei

306 citations · 791 across the 18 of their papers we have counts for

collaborators

Showing 2014Show all

2 papers · 1 filter

astro-ph.HE2014★ 44 cited

Universal scaling of the 3:2 twin-peak quasi-periodic oscillation frequencies with black hole mass and spin revisited

Xin-Lin Zhou, Weimin Yuan, Hai-Wu Pan +1

We discuss further observational support of an idea formulated a decade ago by Abramowicz, Klu{ź}niak, McClintock and Remillard. They demonstrated that the 3:2 pairs of frequencies…

astro-ph.HE2014★ 21 cited

Relativistic Fe K $α$ Line Revealed in the Composite X-ray Spectrum of Narrow Line Seyfert 1 Galaxies --- do their black holes have averagely low or intermediate spins?

Zhu Liu, Weimin Yuan, Youjun Lu +1

While a broad profile of the Fe K $α$ emission line is frequently found in the X-ray spectra of typical Seyfert galaxies, the situation is unclear in the case of Narrow Line Seyfert…

Universal scaling of the 3:2 twin-peak quasi-periodic oscillation frequencies with black hole mass and spin revisited

Relativistic Fe Kα Line Revealed in the Composite X-ray Spectrum of Narrow Line Seyfert 1 Galaxies --- do their black holes have averagely low or intermediate spins?

Relativistic Fe K $α$ Line Revealed in the Composite X-ray Spectrum of Narrow Line Seyfert 1 Galaxies --- do their black holes have averagely low or intermediate spins?