Radio Core-Dominance of Fermi-Blazars: Implication for Blazar Unification
arXiv:2104.04761 · doi:10.1007/s10509-021-03946-2
Abstract
...The distribution of radio core-dominance is consistent with average projection angles of 13.5, 14.8, 16.8, 20.4, and 28.2 for ISPs, LSPs, FSRQs, HSPs, and radio galaxies, respectively. Linear regression analyses of our data yield significant anti-correlation r greater than 0.60 between core-dominance parameter and extended luminosity in each individual subsample, the correlation is significant only when individual subsamples are considered. There is a systematic sequence of the distribution of the different subclasses on the Core-dominance parameter-extended luminosity plane. Nevertheless, little or no correlation between Core-dominance parameter and core luminosity or between Core dominance parameter and gamma-ray luminosity r, less than 0.50 was observed. There is a clear dichotomy between high synchrotron-peaking BL Lacs and other BL Lac subclasses. The results are consistent with a unified view for blazars and can be understood in terms of relativistic beaming persisting at the largest scales.
23 pages, 9 figures. Accepted for publication in Astrophysics and Space Science
References in corpus (10)
- Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxies
- Bright AGN Source List from the First Three Months of the Fermi Large Area Telescope All-Sky Survey
- The blazar sequence: a new perspective
- The Spectral Energy Distributions of Fermi Blazars
- Blazar sequence - an artefact of Doppler boosting
- Radio jet emission from GeV-emitting narrow-line Seyfert 1 galaxies
- The Blazar Sequence: Validity and Predictions
- The jet-disc connection in AGN
- Two new catalogs of blazar candidates in the WISE infrared sky
- The sequence of Compton dominance in blazars based on data from WISE and Fermi/LAT
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- On the Unified View of Extragalactic Sources based on their Broadband Emission Properties
- Investigating possible unification of Seyfert galaxies and blazars in Fermi-LAT sample