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astro-ph.GA2026
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…
astro-ph.GA2022
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…