5 papers
Changing-look Active Galactic Nuclei from SDSS, LAMOST and DESI Surveys
Guohai Chen, Wenxin Yang, Xuhong Ye +4
Results. We identify 45 CLAGNs, of which 40 are newly reported. The sample is dominated by turn-off events, comprising 43 turn-off and 2 turn-on sources. This may be because Type 2…
The particle acceleration study in blazar jet
Hubing Xiao, Wenxin Yang, Yutao Zhang +4
The particle acceleration of blazar jets is crucial to high-energy astrophysics, yet the acceleration mechanism division in blazar subclasses and the underlying nature of these mec…
Characterizing the emission region property of blazars
Junhui Fan, Hubing Xiao, Wenxin Yang +4
The studies and constraints on the emission region are crucial to the blazar radiation mechanism. Yet the previous works mainly focus on individual sources. In this work, we make u…
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…
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…