182 citations · 295 across the 11 of their papers we have counts for
11 papers
Insight into the origin of multiwavelength emissions of PKS 1510-089 through modeling 12 SEDs from 2008 to 2015
Maichang Lei, Yuan Zheng, Jianfu Zhang +2
PKS\,1510089 is one of the most peculiar sources among the FSRQs, exhibiting a notable big blue bump (BBB). This provides an unique opportunity to explore the coupling between t…
Optical flux and spectral variability of BL Lacertae during its historical high outburst in 2020
Nibedita Kalita, Yuhai Yuan, Minfeng Gu +9
BL Lacertae had undergone a series of historical high flux activity over a year, from August 2020 in the optical to VHE -rays. In this paper, we report on optical flux and spect…
The Classification of Blazars Candidates of Uncertain Types
Jun-Hui Fan, Ke-Yin Chen, Hu-Bing Xiao +6
In this work, the support vector machine (SVM) method is adopted to separate BL Lacertae objects (BL Lacs) and flat spectrum radio quasars (FSRQs) in the plots of photon spectrum i…
Revisiting the Relationship between the Long GRB Rate and Cosmic Star Formation History Based on a Large Swift Sample
Jing-Meng Hao, Liang Cao, You-Jun Lu +4
The exact relationship between the long gamma-ray burst (LGRB) rate and the cosmic star formation rate (CSFR) is essential for using LGRBs as cosmological probes. In this work, we…
Correlation Analysis for Gamma-ray (radio) and Broad Line Emissions of Fermi Blazars
Lixia Zhang, Junhui Fan, Yuhai Yuan
In this work, we compiled a sample of 202 Fermi/LAT blazars with available broad line emissions. Out of the 202 sources, 66 have known Doppler factors. The correlation between (…
Comparison between Detected and non- Detected Superluminal Sources
Hubing Xiao, Junhui Fan, Jianghe Yang +8
Active galactic nuclei (AGNs) have been attracting research attention due to their special observable properties. Specifically, a majority of AGNs are detected by Fermi-LAT mission…
Optical monitoring of BL Lac object S5 0716+714 and FSRQ 3C273 from 2000 to 2014
Yu-Hai Yuan, Jun-hui Fan, Jun Tao +5
Using the 1.56m telescope at the Shanghai Observatory (ShAO), China, we monitored two sources, BL Lac object S5 0716+714 and Flat Spectrum Radio Quasar (FSRQ) 3C 273. For S5 0716+7…
The Variability and Period Analysis for the BL Lac AO 0235+164
J. H. Fan, O. Kurtanidze, Y. Liu +12
Variability is one of the extreme observational properties of BL Lacertae objects. AO 0235+164 is a well studied BL Lac through the whole electro-magnetic wavebands. In the present…
The Spectral Energy Distributions of Fermi Blazars
J. H. Fan, J. H. Yang, Y. Liu +7
(Abridged) In this paper, multi-wavelength data are compiled for a sample of 1425 Fermi blazars to calculate their spectral energy distributions (SEDs). A parabolic function, $\log…
Radio Polarization of BL Lacertae objects
Jun-Hui Fan, Tong-Xu Hua, Yu-Hai Yuan +6
In this paper, using the database of the university of Michigan Radio Astronomy Observatory (UMRAO) at three (4.8 GHz, 8 GHZ, and 14.5 GHz) radio frequencies, we studied the polari…
Optical Photometrical Observations and Variability for Quasar 4C 29.45
J. H. Fan, J. Tao, B. C. Qian +6
We reported the result of long term optical variability of the blazar 4C 29.45 (QSO 1156+295, Ton 599), carried out optical photometric observations in Johnson V, Cousins RI passba…