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The INTEGRAL complete sample of type 1 AGN

The INTEGRAL complete sample of type 1 AGN
The INTEGRAL complete sample of type 1 AGN
In this paper we discuss the broad-band X-ray characteristics of a complete sample of 36 type 1 active galactic nuclei (AGN), detected by INTEGRAL in the 20–40 keV band above the 5.5? level. We present, for all the objects in the sample, the broad-band (1–110 keV) spectral analysis obtained by using INTEGRAL/Swift/Burst Alert Telescope observations together with XMM–Newton, Chandra, ASCA and Swift/X-Ray Telescope data. We also present the general average properties of the sample, i.e. the distribution of photon indices, high-energy cut-offs, reflection fractions and absorption properties, together with an in-depth analysis of their parameter space. We find that the average Seyfert 1 power law has an index of 1.7 with a dispersion of 0.2. The mean cut-off energy is at around 100 keV, with most objects displaying Ec in the range 50–150 keV; the average amount of Compton reflection is 1.5 with a typical dispersion of 0.7. We do not find any convincing correlation between the various parameters, an indication that our analysis is not strongly dependent by the interplay between them. Finally, we investigate how the results presented in this work fit into current frameworks for AGN spectral modelling and cosmic diffuse X-ray background synthesis models
galaxies: active, gamma-rays: observations, X-rays: galaxies
0035-8711
1293-1306
Molina, M.
28a3f3b6-aedf-4fa5-9a4f-dbcba001435d
Bassani, L.
07e5602c-f97e-4334-a0fa-c2212431a61a
Malizia, A.
efa63850-cf26-482c-ae3b-54b0c8fb8a87
Stephen, J.B.
c0b1afce-f3d9-4568-b2c1-51482f80cd9a
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Dean, A.J.
2f9093f2-855c-4769-b1aa-6dd621b5dcf1
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
Stephen, J.B.
c0b1afce-f3d9-4568-b2c1-51482f80cd9a
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Dean, A.J.
2f9093f2-855c-4769-b1aa-6dd621b5dcf1
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., Stephen, J.B., Bird, A.J., Dean, A.J., Panessa, F., De Rosa, A. and Landi, R. (2009) The INTEGRAL complete sample of type 1 AGN. Monthly Notices of the Royal Astronomical Society, 399 (3), 1293-1306. (doi:10.1111/j.1365-2966.2009.15257.x).

Record type: Article

Abstract

In this paper we discuss the broad-band X-ray characteristics of a complete sample of 36 type 1 active galactic nuclei (AGN), detected by INTEGRAL in the 20–40 keV band above the 5.5? level. We present, for all the objects in the sample, the broad-band (1–110 keV) spectral analysis obtained by using INTEGRAL/Swift/Burst Alert Telescope observations together with XMM–Newton, Chandra, ASCA and Swift/X-Ray Telescope data. We also present the general average properties of the sample, i.e. the distribution of photon indices, high-energy cut-offs, reflection fractions and absorption properties, together with an in-depth analysis of their parameter space. We find that the average Seyfert 1 power law has an index of 1.7 with a dispersion of 0.2. The mean cut-off energy is at around 100 keV, with most objects displaying Ec in the range 50–150 keV; the average amount of Compton reflection is 1.5 with a typical dispersion of 0.7. We do not find any convincing correlation between the various parameters, an indication that our analysis is not strongly dependent by the interplay between them. Finally, we investigate how the results presented in this work fit into current frameworks for AGN spectral modelling and cosmic diffuse X-ray background synthesis models

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More information

Published date: November 2009
Keywords: galaxies: active, gamma-rays: observations, X-rays: galaxies

Identifiers

Local EPrints ID: 144769
URI: http://eprints.soton.ac.uk/id/eprint/144769
ISSN: 0035-8711
PURE UUID: 2f2d228d-8479-4ea7-8bcf-e9e452b7bc09
ORCID for A.J. Bird: ORCID iD orcid.org/0000-0002-6888-8937

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Date deposited: 24 May 2010 14:37
Last modified: 09 Nov 2021 02:44

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Contributors

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

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