329 citations · 1.2k across the 25 of their papers we have counts for
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astro-ph2006★ 58 cited
Cosmological Evolution of the Duty Cycle of Quasars
Jian-Min Wang, Yan-Mei Chen, Fan Zhang
Quasars are powered by accretion onto supermassive black holes, but the problem of the duty cycle related to the episodic activity of the black holes remains open as one of the maj…
astro-ph2006★ 22 cited
Timing Features of the Accretion--driven Millisecond X-Ray Pulsar XTE J1807--294 in 2003 March Outburst
Fan Zhang, J. L. Qu, C. M. Zhang +2
In order to probe the activity of the inner disk flow and its effect on the neutron star surface emissions, we carried out the timing analysis of the Rossi X-Ray Timing Explorer (R…