Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new panchromatic classification of unclassified Burst Alert Telescope
  active galactic nuclei   We collect data at all frequencies for the new sources classified as unknown
active galactic nuclei (AGNs) in the latest Burst Alert Telescope (BAT) all-sky
hard X-ray catalog. Focusing on the 36 sources with measured redshift, we
compute their spectral energy distribution (SED) from radio to $\gamma$-rays
with the aim to classify these objects. We apply emission models that attempt
to reproduce the obtained SEDs, including: i) a standard thin accretion disk
together with an obscuring torus and a X-ray corona; ii) a two temperature
thick advection-dominated flow; iii) an obscured AGN model, accounting for
absorption along the line of sight at kiloelectronvolt energies and in the
optical band; and iv) a phenomenological model to describe the jet emission in
blazar-like objects. We integrate the models with the SWIRE template libraries
to account for the emission of the host galaxy. For every source we found a
good agreement between data and our model. Considering that the sources were
selected in the hard X-ray band, which is rather unaffected by absorption, we
expected and found a large fraction of absorbed radio-quiet AGNs (31 out of 36)
and some additional rare radio-loud sources (5 out of 36), since the jet
emission in hard X-rays is important for aligned jets owing to the boost
produced by the beaming effect. With our work we can confirm the hypothesis
that a number of galaxies, whose optical spectra lack AGN emission features,
host an obscured active nucleus. The approach we used proved to be efficient in
rapidly identifying objects, which commonly used methods were not able to
classify.

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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: physics
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The categories of this paper are: comp-gas
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The categories of this paper are: math
12
The categories of this paper are: nucl-th
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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: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int