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A broad-band spectral analysis of eight radio-loud type 1 active galactic nuclei selected in the hard X-ray band

A broad-band spectral analysis of eight radio-loud type 1 active galactic nuclei selected in the hard X-ray band
A broad-band spectral analysis of eight radio-loud type 1 active galactic nuclei selected in the hard X-ray band
Starting from a complete sample of type 1 active galactic nuclei (AGN) observed by INTEGRAL in the 20–40 keV band, we have selected a set of eight AGN which can be classified as radio-loud objects according to their 1.4 GHz power density, radio-to-hard X-ray flux density ratio and radio morphology. The sample contains six broad-line radio Galaxies and two candidate ones. Most of the objects in our sample display a double-lobe morphology, both on small and large scales. For all the objects, we present broad-band (1–110 keV) spectral analysis using INTEGRAL observations together with archival XMM–Newton, Chandra, Swift/XRT and Swift/BAT data. We constrain the primary continuum (photon index and cut-off energy), intrinsic absorption and reprocessing features (iron line and reflection) in most of the objects. The sources analysed here show remarkable similarities to radio-quiet type 1 AGN with respect to most of the parameters analysed; we only find marginal evidence for weaker reprocessing features in our objects compared to their radio-quiet counterparts. Similarly, we do not find any correlation between the spectral parameters studied and the source core dominance or radio to 20–100 keV flux density ratios, suggesting that what makes our objects radio loud has no effect on their high-energy characteristics.
galaxies: active, x-rays: galaxies
0035-8711
1217-1228
Molina, M.
28a3f3b6-aedf-4fa5-9a4f-dbcba001435d
Bassani, L.
07e5602c-f97e-4334-a0fa-c2212431a61a
Malizia, A.
efa63850-cf26-482c-ae3b-54b0c8fb8a87
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Dean, A.J.
2f9093f2-855c-4769-b1aa-6dd621b5dcf1
Fiocchi, M.
74d63e71-f43d-494b-92ee-07dc83d18de1
Panessa, F.
ea57d0af-2ad5-4f65-a8f7-b001e70ebe13
De Rosa, A.
b2a68e71-5c23-4649-94f0-1d8ffd40bb77
Landi, R.
b8243478-d7a1-4774-8a66-4158a65a33d3
Molina, M.
28a3f3b6-aedf-4fa5-9a4f-dbcba001435d
Bassani, L.
07e5602c-f97e-4334-a0fa-c2212431a61a
Malizia, A.
efa63850-cf26-482c-ae3b-54b0c8fb8a87
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Dean, A.J.
2f9093f2-855c-4769-b1aa-6dd621b5dcf1
Fiocchi, M.
74d63e71-f43d-494b-92ee-07dc83d18de1
Panessa, F.
ea57d0af-2ad5-4f65-a8f7-b001e70ebe13
De Rosa, A.
b2a68e71-5c23-4649-94f0-1d8ffd40bb77
Landi, R.
b8243478-d7a1-4774-8a66-4158a65a33d3

Molina, M., Bassani, L., Malizia, A., Bird, A.J., Dean, A.J., Fiocchi, M., Panessa, F., De Rosa, A. and Landi, R. (2008) A broad-band spectral analysis of eight radio-loud type 1 active galactic nuclei selected in the hard X-ray band. Monthly Notices of the Royal Astronomical Society, 390 (3), 1217-1228. (doi:10.1111/j.1365-2966.2008.13824.x).

Record type: Article

Abstract

Starting from a complete sample of type 1 active galactic nuclei (AGN) observed by INTEGRAL in the 20–40 keV band, we have selected a set of eight AGN which can be classified as radio-loud objects according to their 1.4 GHz power density, radio-to-hard X-ray flux density ratio and radio morphology. The sample contains six broad-line radio Galaxies and two candidate ones. Most of the objects in our sample display a double-lobe morphology, both on small and large scales. For all the objects, we present broad-band (1–110 keV) spectral analysis using INTEGRAL observations together with archival XMM–Newton, Chandra, Swift/XRT and Swift/BAT data. We constrain the primary continuum (photon index and cut-off energy), intrinsic absorption and reprocessing features (iron line and reflection) in most of the objects. The sources analysed here show remarkable similarities to radio-quiet type 1 AGN with respect to most of the parameters analysed; we only find marginal evidence for weaker reprocessing features in our objects compared to their radio-quiet counterparts. Similarly, we do not find any correlation between the spectral parameters studied and the source core dominance or radio to 20–100 keV flux density ratios, suggesting that what makes our objects radio loud has no effect on their high-energy characteristics.

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More information

Published date: November 2008
Keywords: galaxies: active, x-rays: galaxies

Identifiers

Local EPrints ID: 144801
URI: http://eprints.soton.ac.uk/id/eprint/144801
ISSN: 0035-8711
PURE UUID: 84a122e8-63f5-49d5-b49e-e5da7c6e4d57
ORCID for A.J. Bird: ORCID iD orcid.org/0000-0002-6888-8937

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Date deposited: 24 May 2010 13:53
Last modified: 09 Nov 2021 02:44

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Contributors

Author: M. Molina
Author: L. Bassani
Author: A. Malizia
Author: A.J. Bird ORCID iD
Author: A.J. Dean
Author: M. Fiocchi
Author: F. Panessa
Author: A. De Rosa
Author: R. Landi

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