Jet/accretion and unification for FSRQs/FRII and BL Lac objects/FRI radio galaxies

We compiled a sample of 24 flat-spectrum radio quasars (FSRQs), 21 BL Lacs, 13 FRI and 12 FRII radio galaxies to study the jet power and broad-line luminosity relation, and the jet power and black hole mass relation. Furthermore, we obtain the histograms of key parameters. Our main results are as fo...

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Bibliographic Details
Published in:Astrophysics and space science 2015-06, Vol.357 (2), p.1, Article 100
Main Authors: Chen, Yongyun, Zhang, Xiong, Zhang, Haojing, Xiong, Dingrong, Yu, Xiaoling, Cha, Yongjuan, Li, Bijun, Huang, Xia
Format: Article
Language:English
Subjects:
Accretion
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Letter
Observations and Techniques
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Stars & galaxies
Studies
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Summary:We compiled a sample of 24 flat-spectrum radio quasars (FSRQs), 21 BL Lacs, 13 FRI and 12 FRII radio galaxies to study the jet power and broad-line luminosity relation, and the jet power and black hole mass relation. Furthermore, we obtain the histograms of key parameters. Our main results are as follows: (i) We found that the FSRQs are roughly separated from BL Lacs by the Ledlow–Owen FRI/FRII dividing line in the log P jet –log M plane. This result supports the unification model that BL Lacs unify with FRI radio galaxies and FSRQs unify with FRII radio galaxies. (ii) We found that the coefficient of the best-fit linear regression equation of log L BLR –log P jet relation is very close to 1 for our sample. The correlation between broad line luminosity and jet power is significant which supports that jet power has a close link with accretion.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-015-2303-x