Jet/accretion and Unification for FSRQs/FRII and BL Lac objects/FRI radio galaxies [HEAP]

http://arxiv.org/abs/1504.05638


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 the follows:(i) We found that the FSRQs are roughly separated from BL Lacs by the Ledlow-Owen FRI/FRII dividing line in the $\rm{\log{P_{jet}}-\log{M}}$ 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 $\rm{\log{L_{BLR}}-\log{P_{jet}}}$ 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.

Read this paper on arXiv…

Y. Chen, X. Zhang, H. Zhang, et. al.
Thu, 23 Apr 15
60/61

Comments: 12pages,7figures,has been accepted for publication in Ap&SS. arXiv admin note: text overlap with arXiv:1012.0308 by other authors