Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Suzaku Observations of gamma-Ray Bright Radio Galaxies: Origin of the
  X-ray Emission and Broad-Band Modelin   We performed a systematic X-ray study of eight nearby gamma-ray bright radio
galaxies with Suzaku for understanding the origin of their X-ray emissions. The
Suzaku spectra for five of those have been presented previously, while the
remaining three (M87, PKS0625-354, and 3C78) are presented here for the first
time. Based on the Fe-K line strength, X-ray variability, and X-ray power-law
photon indices, and using additional information on the [O III] line emission,
we argue for a jet origin of the observed X-ray emission in these three
sources. We also analyzed five years of Fermi Large Area Telescope (LAT) GeV
gamma-ray data on PKS0625-354 and 3C78 to understand these sources within the
blazar picture. We found significant gamma-ray variability in the former
object. Overall, we note that the Suzaku spectra for both PKS0625-354 and 3C78
are rather soft, while the LAT spectra are unusually hard when compared with
other gamma-ray detected low-power (FR I) radio galaxies. We demonstrate that
the constructed broad-band spectral energy distributions of PKS0625-354 and
3C78 are well described by a one-zone synchrotron/synchrotron self-Compton
model. The results of the modeling indicate lower bulk Lorentz factors compared
to those typically found in other BL Lac objects, but consistent with the
values inferred from modeling other LAT-detected FR\,I radio galaxies.
Interestingly, the modeling also implies very high peak ($\sim 10^{16}$ Hz)
synchrotron frequencies in the two analyzed sources, contrary to
previously-suggested scenarios for FR I/BL Lac unification. We discuss the
implications of our findings in the context of the FR I/BL Lac unification
schemes.

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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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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: math-ph