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BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog

BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog
BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog
Hard X-ray ($\geq 10$ keV) observations of Active Galactic Nuclei (AGN) can shed light on some of the most obscured episodes of accretion onto supermassive black holes. The 70-month Swift/BAT all-sky survey, which probes the 14-195 keV energy range, has currently detected 838 AGN. We report here on the broad-band X-ray (0.3-150 keV) characteristics of these AGN, obtained by combining XMM-Newton, Swift/XRT, ASCA, Chandra, and Suzaku observations in the soft X-ray band ($\leq 10$ keV) with 70-month averaged Swift/BAT data. The non-blazar AGN of our sample are almost equally divided into unobscured ($N_{\rm H}<10^{22}\rm cm^{-2}$) and obscured ($N_{\rm H}\geq 10^{22}\rm cm^{-2}$) AGN, and their Swift/BAT continuum is systematically steeper than the 0.3-10 keV emission, which suggests that the presence of a high-energy cutoff is almost ubiquitous. We discuss the main X-ray spectral parameters obtained, such as the photon index, the reflection parameter, the energy of the cutoff, neutral and ionized absorbers, and the soft excess for both obscured and unobscured AGN.
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies
0067-0049
Ricci, Claudio
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Trakhtenbrot, Benny
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Koss, Michael J.
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Ueda, Yoshihiro
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Delvecchio, Ivan
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Treister, Ezequiel
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Schawinski, Kevin
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Paltani, Stephane
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Oh, Kyuseok
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Lamperti, Isabella
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Berney, Simon
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Gandhi, Poshak
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Ichikawa, Kohei
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Bauer, Franz E.
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Ho, Luis C.
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Asmus, Daniel
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Beckmann, Volker
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Soldi, Simona
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Balokovic, Mislav
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Gehrels, Neil
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Markwardt, Craig B.
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Ricci, Claudio
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Trakhtenbrot, Benny
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Koss, Michael J.
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Ueda, Yoshihiro
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Delvecchio, Ivan
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Treister, Ezequiel
41255c65-540c-43de-ae46-78299b585717
Schawinski, Kevin
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Paltani, Stephane
d323676a-1e76-42d6-a243-5cd9d943a65b
Oh, Kyuseok
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Lamperti, Isabella
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Berney, Simon
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Gandhi, Poshak
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Ichikawa, Kohei
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Bauer, Franz E.
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Ho, Luis C.
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Asmus, Daniel
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Beckmann, Volker
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Soldi, Simona
ce0faaa4-b240-44ec-a3fe-ac932cdf20ea
Balokovic, Mislav
09000530-1800-4697-9095-a65d08de5a33
Gehrels, Neil
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Markwardt, Craig B.
c958d3b7-3e7a-4bdb-964d-3b1195438b4f

Ricci, Claudio, Trakhtenbrot, Benny, Koss, Michael J., Ueda, Yoshihiro, Delvecchio, Ivan, Treister, Ezequiel, Schawinski, Kevin, Paltani, Stephane, Oh, Kyuseok, Lamperti, Isabella, Berney, Simon, Gandhi, Poshak, Ichikawa, Kohei, Bauer, Franz E., Ho, Luis C., Asmus, Daniel, Beckmann, Volker, Soldi, Simona, Balokovic, Mislav, Gehrels, Neil and Markwardt, Craig B. (2017) BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog. The Astrophysical Journal Supplement Series, 233 (17). (doi:10.3847/1538-4365/aa96ad).

Record type: Article

Abstract

Hard X-ray ($\geq 10$ keV) observations of Active Galactic Nuclei (AGN) can shed light on some of the most obscured episodes of accretion onto supermassive black holes. The 70-month Swift/BAT all-sky survey, which probes the 14-195 keV energy range, has currently detected 838 AGN. We report here on the broad-band X-ray (0.3-150 keV) characteristics of these AGN, obtained by combining XMM-Newton, Swift/XRT, ASCA, Chandra, and Suzaku observations in the soft X-ray band ($\leq 10$ keV) with 70-month averaged Swift/BAT data. The non-blazar AGN of our sample are almost equally divided into unobscured ($N_{\rm H}<10^{22}\rm cm^{-2}$) and obscured ($N_{\rm H}\geq 10^{22}\rm cm^{-2}$) AGN, and their Swift/BAT continuum is systematically steeper than the 0.3-10 keV emission, which suggests that the presence of a high-energy cutoff is almost ubiquitous. We discuss the main X-ray spectral parameters obtained, such as the photon index, the reflection parameter, the energy of the cutoff, neutral and ionized absorbers, and the soft excess for both obscured and unobscured AGN.

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Accepted/In Press date: 10 September 2017
e-pub ahead of print date: 5 December 2017
Keywords: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies

Identifiers

Local EPrints ID: 414355
URI: http://eprints.soton.ac.uk/id/eprint/414355
ISSN: 0067-0049
PURE UUID: fbb7c3e3-d727-4497-aca3-09aec9d11c3f
ORCID for Poshak Gandhi: ORCID iD orcid.org/0000-0003-3105-2615

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Date deposited: 27 Sep 2017 16:30
Last modified: 17 Dec 2019 05:53

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Contributors

Author: Claudio Ricci
Author: Benny Trakhtenbrot
Author: Michael J. Koss
Author: Yoshihiro Ueda
Author: Ivan Delvecchio
Author: Ezequiel Treister
Author: Kevin Schawinski
Author: Stephane Paltani
Author: Kyuseok Oh
Author: Isabella Lamperti
Author: Simon Berney
Author: Poshak Gandhi ORCID iD
Author: Kohei Ichikawa
Author: Franz E. Bauer
Author: Luis C. Ho
Author: Daniel Asmus
Author: Volker Beckmann
Author: Simona Soldi
Author: Mislav Balokovic
Author: Neil Gehrels
Author: Craig B. Markwardt

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