Further evidences of superluminal AGNs as $\gamma$-ray sources

Abstract

In our previous work in Xiao et al. (2019), we suggested that 6 superluminal sources could be gamma-ray candidates, and in fact 5 of them have been confirmed in the fourth Fermi-LAT source catalogue (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-Fermi detected superluminal sources (non-FDSs). Thus, we believe that all superluminal sources should have $\gamma$-ray emissions, and superluminal motion could also be a clue to detect $\gamma$-ray emission from active galactic nuclei (AGN). We present a new approach of Doppler factor estimate through the study of the $\gamma$-ray luminosity ($L_{\gamma }$) and of the viewing angle ($\varphi$).

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• Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxies
• MOJAVE: XV. VLBA 15 GHz Total Intensity and Polarization Maps of 437 Parsec-Scale AGN Jets From 1996-2017
• MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-Loud Blazars
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Cited by in corpus (1)

• Superluminal Motion and Jet Parameters in the Gamma-ray-Emitting Narrow-Line Seyfert 1 Galaxy TXS 1206+549