20 citations · 51 across the 4 of their papers we have counts for
4 papers
Search for Intra-day Optical Variability in -ray--loud Blazars S5 0716+714 and 3C 273
H. T. Liu, Hai Cheng Feng, Y. X. Xin +3
We present the photometric observations of blazars S5 0716+714 and 3C 273 with high temporal resolution (30--60s) in the or bands. The observations were performed with a 1.…
Search for intra-day optical variability in Mrk 501
Hai-Cheng Feng, H. T. Liu, X. L. Fan +5
We present our observations of the optical intra-day variability (IDV) in -ray BL Lac object Mrk 501. The observations were run with the 1.02 m and 2.4 m optical telescopes at Y…
The flat-spectrum radio quasar 3C 345 from the high to the low emission state
M. Berton, N. H. Liao, G. La Mura +17
We report simultaneous observations at different energy bands in radio, optical, UV, X-rays and rays of the flat-spectrum radio-quasar 3C 345. We built the light curve of the s…
Revisiting Correlations Between Broad-Line and Jet Emission Variations for AGNs: 3C 120 and 3C 273
H. T. Liu, J. M. Bai, H. C. Feng +1
We restudy the issue of cross-correlations between broad-line and jet emission variations, and aim to locate the position of radio (and gamma-ray) emitting region in jet of active…