Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The X-ray reflection spectrum of the radio-loud quasar 4C 74.26   The relativistic jets created by some active galactic nuclei are important
agents of AGN feedback. In spite of this, our understanding of what produces
these jets is still incomplete. X-ray observations, which can probe the
processes operating in the central regions in immediate vicinity of the
supermassive black hole, the presumed jet launching point, are potentially
particularly valuable in illuminating the jet formation process. Here, we
present the hard X-ray NuSTAR observations of the radio-loud quasar 4C 74.26 in
a joint analysis with quasi-simultaneous, soft X-ray Swift observations. Our
spectral analysis reveals a high-energy cut-off of 183$_{-35}^{+51}$ keV and
confirms the presence of ionized reflection in the source. From the average
spectrum we detect that the accretion disk is mildly recessed with an inner
radius of $R_\mathrm{in}=4-180\,R_\mathrm{g}$. However, no significant
evolution of the inner radius is seen during the three months covered by our
NuSTAR campaign. This lack of variation could mean that the jet formation in
this radio-loud quasar differs from what is observed in broad-line radio
galaxies.

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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: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg