Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 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 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.

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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: physics