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Hard X-ray selected giant radio galaxies – I. The X-ray properties and radio connection

Hard X-ray selected giant radio galaxies – I. The X-ray properties and radio connection
Hard X-ray selected giant radio galaxies – I. The X-ray properties and radio connection
We present the first broad-band X-ray study of the nuclei of 14 hard X-ray-selected giant radio galaxies, based both on the literature and on the analysis of archival X-ray data from NuSTAR, XMM–Newton, Swift, and INTEGRAL. The X-ray properties of the sources are consistent with an accretion-related X-ray emission, likely originating from an X-ray corona coupled to a radiatively efficient accretion flow. We find a correlation between the X-ray luminosity and the radio core luminosity, consistent with that expected for active galactic nuclei powered by efficient accretion. In most sources, the luminosity of the radio lobes and the estimated jet power are relatively low compared with the nuclear X-ray emission. This indicates that either the nucleus is more powerful than in the past, consistent with a restarting of the central engine, or that the giant lobes are dimmer due to expansion losses.
0035-8711
4250-4260
Ursini, F
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Bassani, L.
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Panessa, F.
ea57d0af-2ad5-4f65-a8f7-b001e70ebe13
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Bruni, G.
edb70209-3aab-4d47-a4d2-109cdf2c6bc4
Fiocchi, M.
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Malizia, A.
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Saripalli, L.
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Ubertini, P.
7035748e-152c-473e-8766-a2fa3ac49fcb
Ursini, F
3736c39e-a16d-42ec-812a-e5b1c8d9b0b0
Bassani, L.
07e5602c-f97e-4334-a0fa-c2212431a61a
Panessa, F.
ea57d0af-2ad5-4f65-a8f7-b001e70ebe13
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Bruni, G.
edb70209-3aab-4d47-a4d2-109cdf2c6bc4
Fiocchi, M.
74d63e71-f43d-494b-92ee-07dc83d18de1
Malizia, A.
efa63850-cf26-482c-ae3b-54b0c8fb8a87
Saripalli, L.
219da1df-896f-4e89-98af-1115f9a9085a
Ubertini, P.
7035748e-152c-473e-8766-a2fa3ac49fcb

Ursini, F, Bassani, L., Panessa, F., Bird, A.J., Bruni, G., Fiocchi, M., Malizia, A., Saripalli, L. and Ubertini, P. (2018) Hard X-ray selected giant radio galaxies – I. The X-ray properties and radio connection. Monthly Notices of the Royal Astronomical Society, 3 (11), 4250-4260. (doi:10.1093/mnras/sty2547).

Record type: Article

Abstract

We present the first broad-band X-ray study of the nuclei of 14 hard X-ray-selected giant radio galaxies, based both on the literature and on the analysis of archival X-ray data from NuSTAR, XMM–Newton, Swift, and INTEGRAL. The X-ray properties of the sources are consistent with an accretion-related X-ray emission, likely originating from an X-ray corona coupled to a radiatively efficient accretion flow. We find a correlation between the X-ray luminosity and the radio core luminosity, consistent with that expected for active galactic nuclei powered by efficient accretion. In most sources, the luminosity of the radio lobes and the estimated jet power are relatively low compared with the nuclear X-ray emission. This indicates that either the nucleus is more powerful than in the past, consistent with a restarting of the central engine, or that the giant lobes are dimmer due to expansion losses.

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Hard X-ray selected giant radio galaxies – I. The X-ray properties and radio connection - Accepted Manuscript
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Accepted/In Press date: 11 September 2018
e-pub ahead of print date: 18 September 2018
Published date: December 2018

Identifiers

Local EPrints ID: 426730
URI: http://eprints.soton.ac.uk/id/eprint/426730
ISSN: 0035-8711
PURE UUID: 2e94be92-b1bb-4b85-810a-4698225cdae2
ORCID for A.J. Bird: ORCID iD orcid.org/0000-0002-6888-8937

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Date deposited: 11 Dec 2018 17:30
Last modified: 22 Nov 2021 02:36

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Contributors

Author: F Ursini
Author: L. Bassani
Author: F. Panessa
Author: A.J. Bird ORCID iD
Author: G. Bruni
Author: M. Fiocchi
Author: A. Malizia
Author: L. Saripalli
Author: P. Ubertini

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