2014/12/01 by De-Xiang Wu, Junhui Fan, Jun-Hui Fan +7 · 9 citations
Physics and Astronomy · #Active galactic nucleus #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #BL Lac object #Blazar #Dark Matter and Cosmic Phenomena #Fermi Gamma-ray Space Telescope #Galaxy #Gamma ray #Luminosity #Physics #Quasar #Radio Astronomy Observations and Technology #Radio galaxy #Redshift #Relativistic beaming #Very-long-baseline interferometry
paper · pdf · doi:10.1093/pasj/psu111
published in Publications of the Astronomical Society of Japan 66(6) (Oxford University Press)
openalex publication_date 2014/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
Abstract Blazars as a special subclass of Active Galactic Nuclei (AGNs) consist of two classes, namely Flat Spectrum Radio Quasars (FSRQs) and BL Lacertae objects (BL Lacs). We compiled information about core and extended radio emissions of 124 γ-ray (0.1–100 GeV) loud blazars (79 FSRQs and 45 BL Lacs). Correlation is found between γ-ray and 5 GHz radio luminosities when the dependence of these two parameters on redshift is taken into account. The correlation suggests that, as well as the radio emission, the γ-ray emission may be strongly beamed. We find no correlation between the γ-ray luminosity (Lγ) and the core-dominance parameter R = Lcore/Lext, where Lcore is the VLBI core emission at 5 GHz, Lext is the extended (lobe) radio emissions at 5 GHz, but there is a strong correlation between log(Lγ/Lext) and log(1 + R).