18 citations · 18 across the 2 of their papers we have counts for
7 papers
The longest timescale X-ray variability reveals an evidence for active galactic nuclei in the high accretion state
You-Hong Zhang
The All Sky Monitor (ASM) onboard the Rossi X-ray Timing Explorer (RXTE) has continuously monitored a number of Active galactic nuclei (AGNs) with similar sampling rates for 14 yea…
Discovery of a high confidence soft lag from an X-ray flare of Markarian 421
You-Hong Zhang, Zheng-Tian Hou, Li Shao +1
We present the X-ray variability properties of the X-ray and TeV bright blazar Mrk 421 with a ~60 ks long XMM-Newton observation performed on November 9-10, 2005. The source experi…
Evolution of the synchrotron and inverse Compton emissions of the low energy peaked BL Lac object S5 0716+714
You-Hong Zhang
This paper presents a detailed analysis of the temporal and spectral variability of the low-energy peaked BL Lac object S5 0716+714 with a long (~74 ks)X-ray observation performed…
Four Years Monitoring of Blazar PKS 2155-304 with BeppoSAX: Probing the Dynamics of the Jet
Y. H. Zhang, A. Treves, A. Celotti +7
PKS 2155--304 is one of the brightest blazars in the X-ray band. It was repeatedly monitored with BeppoSax during three long campaigns of about 2 days each in November of 1996, 199…
ROSAT/ASCA Observations of a Serendipitous BL Lac Object PKS 2316-423: The Variable High-Energy Tail of Synchrotron Radiation
Sui-Jian Xue, You-Hong Zhang, Jian-Sheng Chen
We present the analysis of archival data from ROSAT and ASCA of a serendipitous BL Lac object PKS 2316-423. Because of its featureless non-thermal radio/optical continuum, PKS 2316…
BeppoSAX Observations of Mkn 421: clues on the particle acceleration ?
G. Fossati, A. Celotti, M. Chiaberge +1
Mkn 421 was repeatedly observed with BeppoSAX in 1997-1998. We present highlights of the results of the thorough temporal and spectral analysis discussed by Fossati et al. (1999) a…