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Radio/X-ray monitoring of the broad-line radio galaxy 3C 382. High-energy view with XMM–Newton and NuSTAR

Ursini, F. and Petrucci, P.-O. and Matt, G. and Bianchi, S. and Cappi, M. and Dadina, M. and Grandi, P. and Torresi, E. and Ballantyne, D. R. and De Marco, B. and De Rosa, A. and Giroletti, M. and Malzac, J. and Marinucci, A. and Middei, R. and Ponti, G. and Tortosa, A. (2018) Radio/X-ray monitoring of the broad-line radio galaxy 3C 382. High-energy view with XMM–Newton and NuSTAR. Monthly Notices of the Royal Astronomical Society, 478 (2). pp. 2663-2675. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20180517-185733548

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Abstract

We present the analysis of five joint XMM–Newton/NuSTARobservations, 20 ks each and separated by 12 days, of the broad-line radio galaxy 3C 382. The data were obtained as part of a campaign performed in September-October 2016 simultaneously with VLBA. The radio data and their relation with the X-ray ones will be discussed in a following paper. The source exhibits a moderate flux variability in the UV/X-ray bands, and a limited spectral variability especially in the soft X-ray band. In agreement with past observations, we find the presence of a warm absorber, an iron Kα line with no associated Compton reflection hump, and a variable soft excess well described by a thermal Comptonization component. The data are consistent with a “two-corona” scenario, in which the UV emission and soft excess are produced by a warm (kT ≃ 0.6 keV), optically thick (τ ≃ 20) corona consistent with being a slab fully covering a nearly passive accretion disc, while the hard X-ray emission is due to a hot corona intercepting roughly 10% of the soft emission. These results are remarkably similar to those generally found in radio-quiet Seyferts, thus suggesting a common accretion mechanism.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1093/mnras/sty1258DOIArticle
http://arxiv.org/abs/1805.06229arXivDiscussion Paper
Additional Information:© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/about_us/legal/notices). Accepted 2018 May 11. Received 2018 May 11; in original form 2018 February 13. Published: 15 May 2018. We are grateful to the referee for helpful comments that improved the manuscript. This work is based on observations obtained with: the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory and funded by NASA; XMM–Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and the USA (NASA). This research has made use of data, software and/or web tools obtained from NASA’s High Energy Astrophysics Science Archive Research Center (HEASARC), a service of Goddard Space Flight Center and the Smithsonian Astrophysical Observatory. The research leading to these results has received funding from the European Union’s Horizon 2020 Programme under the AHEAD project (grant agreement n. 654215). FU acknowledges financial support from the Italian Space Agency (ASI) under contract ASI/INAF 2013-025-R01. SB and MC acknowledge financial support from ASI under grant ASI-INAF I/037/12/0, while GM, AM and AT from ASI/INAF I/037/12/0-011/13. SB, GM, AM, RM and AT acknowledge financial support from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 312789. FU, GM, SB, MC, MD, PG, ET, ADR, MG, AM, RM and AT acknowledge financial contribution from the agreement ASI-INAF n. 2017-14-H.O. BDM acknowledges support from the Polish National Science Center grant Polonez 2016/21/P/ST9/04025. GP ackowledges support by the Bundesministerium für Wirtschaft und Technologie/Deutsches Zentrum für Luft und Raumfahrt (BMWI/DLR, FKZ 50 OR 1408) and the Max Planck Society.
Group:NuSTAR
Subject Keywords:galaxies: active, X-rays: galaxies, X-rays: individuals (3C 382)
Issue or Number:2
Record Number:CaltechAUTHORS:20180517-185733548
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180517-185733548
Official Citation:F Ursini, P-O Petrucci, G Matt, S Bianchi, M Cappi, M Dadina, P Grandi, E Torresi, D R Ballantyne, B De Marco, A De Rosa, M Giroletti, J Malzac, A Marinucci, R Middei, G Ponti, A Tortosa; Radio/X-ray monitoring of the broad-line radio galaxy 3C 382. High-energy view with XMM–Newton and NuSTAR, Monthly Notices of the Royal Astronomical Society, Volume 478, Issue 2, 1 August 2018, Pages 2663–2675, https://doi.org/10.1093/mnras/sty1258
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86446
Collection:CaltechAUTHORS
Deposited By: Joy Painter
Deposited On:18 May 2018 16:49
Last Modified:03 Oct 2019 19:43

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