Further evidence of superluminal active galactic nuclei as γ‐ray sources. Issue 4 (18th May 2020)

• Record Type: Journal Article
• Authors: Xiao, Hubing; Fan, Junhui; Rando, Riccardo; Zhu, Jingtian; Hu, Liangjun
• Is Part Of: Astronomische Nachrichten. Volume 341:Issue 4(2020)
• Page Start: 462
• Page End: 470
• Publication Date: 2020-05-18
• Subjects: 4FGL -- active galactic nuclei -- jets -- superluminal motion -- γ‐rays; Astronomy -- Periodicals; 520.5
• DOI: 10.1002/asna.202013733
• Languages: English
• ISSNs: 0004-6337

Abstract

Abstract: In our previous work in Xiao et al. (SCPMA, 2019, 62, 129811), we suggested that six superluminal sources could be γ ‐ray candidates, and in fact, five of them have been confirmed in the fourth Fermi ‐LAT source catalog (4FGL). In this work, based on the 4FGL, we report a sample of 229 Fermi detected superluminal sources (FDSs), including 40 new FDSs and 62 non‐FDSs. Thus, we believe that all superluminal sources should have γ ‐ray emissions, and superluminal motion could also be a clue to detect γ ‐ray emission from active galactic nuclei. We present a new approach of Doppler factor estimate through the study of the γ ‐ray luminosity ( L γ ) and of the viewing angle ( ϕ ).