Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining the central engine of radio-loud AGNs   We present an X-ray spectral survey of radio-loud (RL) AGNs using ASCA and
RXTE. The goal was to study the structure of their central engines and compare
it to that of their radio-quiet (RQ) counterparts. We find Systematic
differences in the X-ray properties of the two AGN classes. Specifically, RL
AGNs exhibit weaker Fe lines and reflection components than RQ AGNs, indicating
smaller solid angles subtended by the reprocessing medium to the X-ray source.
The circumnuclear environs of RL and RQ AGNs also differ: large amounts of cold
gas are detected in Broad Line Radio Galaxies and Quasars, contrary to what is
found in Seyfert galaxies of similar X-ray luminosity. We also discuss ASCA
observations of Weak Line Radio Galaxies, a distinct subset of radio galaxies
which may harbor a low-luminosity AGN powered by an advection-dominated
accretion flow.

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The categories of this paper are: alg-geom
1
The categories of this paper are: cs
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The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
3
The categories of this paper are: physics
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
2
The categories of this paper are: math
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The categories of this paper are: atom-ph