Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The $L_\mathrm{x}$-$L_\mathrm{uv}$-$L_\mathrm{radio}$ relation and
  corona-disk-jet connection in optically selected radio-loud quasars   Radio-loud quasars (RLQs) are more X-ray luminous than predicted by the
X-ray-optical/UV relation (i.e. $L_\mathrm{x}\propto L_\mathrm{uv}^\gamma$) for
radio-quiet quasars (RQQs). The excess X-ray emission depends on the
radio-loudness parameter ($R$) and radio spectral slope ($\alpha_\mathrm{r}$).
We construct a uniform sample of 729 optically selected RLQs with high
fractions of X-ray detections and $\alpha_\mathrm{r}$ measurements.We find that
steep-spectrum radio quasars (SSRQs; $\alpha_\mathrm{r}\le-0.5$) follow a
quantitatively similar $L_\mathrm{x}\propto L_\mathrm{uv}^\gamma$ relation as
that for RQQs, suggesting a common coronal origin for the X-ray emission of
both SSRQs and RQQs. However, the corresponding intercept of SSRQs is larger
than that for RQQs and increases with $R$, suggesting a connection between the
radio jets and the configuration of the accretion flow. Flat-spectrum radio
quasars (FSRQs; $\alpha_\mathrm{r}>-0.5$) are generally more X-ray luminous
than SSRQs at given $L_\mathrm{uv}$ and $R$, likely involving more physical
processes. The emergent picture is different from that commonly assumed where
the excess X-ray emission of RLQs is attributed to the jets. We thus perform
model selection to comparecritically these different interpretations, which
prefers the coronal scenario with a corona-jet connection. A distinct jet
component is likely important for only a small portion of FSRQs.The corona-jet,
disk-corona, and disk-jet connections of RLQs are likely driven by independent
physical processes. Furthermore, the corona-jet connection implies that
small-scale processesin the vicinity of SMBHs, probably associated with the
magnetic flux/topology instead of black-hole spin, are controlling the
radio-loudness of quasars.

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The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat