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Blueshifted absorption lines from X-ray reflection in IRAS 13224−3809

Fabian, A. C. and Reynolds, C. S. and Jiang, J. and Pinto, C. and Gallo, L. C. and Parker, M. L. and Lasenby, A. N. and Alston, W. N. and Buisson, D. J. K. and Cackett, E. M. and De Marco, B. and García, J. and Kara, E. and Kosec, P. and Middleton, M. J. and Miller, J. M. and Miniutti, G. and Walton, D. J. and Wilkins, D. R. and Young, A. J. (2020) Blueshifted absorption lines from X-ray reflection in IRAS 13224−3809. Monthly Notices of the Royal Astronomical Society, 493 (2). pp. 2518-2522. ISSN 0035-8711. doi:10.1093/mnras/staa482.

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We explore a disc origin for the highly blueshifted, variable absorption lines seen in the X-ray spectrum of the narrow-line Seyfert 1 galaxy IRAS 13224−3809. The blueshift corresponds to a velocity of ∼0.25c. Such features in other active galactic nuclei are often interpreted as ultrafast outflows. The velocity is of course present in the orbital motions of the inner disc. The absorption lines in IRAS 13224−3809 are best seen when the flux is low and the reflection component of the disc is strong relative to the power-law continuum. The spectra are consistent with a model in which the reflection component passes through a thin, highly ionized absorbing layer at the surface of the inner disc, the blueshifted side of which dominates the flux due to relativistic aberration (the disc inclination is about 70°). No fast outflow need occurs beyond the disc.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Fabian, A. C.0000-0002-9378-4072
Jiang, J.0000-0002-9639-4352
Pinto, C.0000-0003-2532-7379
Parker, M. L.0000-0002-8466-7317
Alston, W. N.0000-0003-2658-6559
Cackett, E. M.0000-0002-8294-9281
García, J.0000-0003-3828-2448
Kara, E.0000-0003-0172-0854
Middleton, M. J.0000-0002-8183-2970
Walton, D. J.0000-0001-5819-3552
Wilkins, D. R.0000-0002-4794-5998
Young, A. J.0000-0003-3626-9151
Additional Information:© 2020 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 ( Accepted 2020 February 14. Received 2020 February 14; in original form 2019 December 20. We thank the referee for helpful comments. WNA and ACF acknowledge support from ERC Advanced Grant FEEDBACK, 340442. JJ acknowledges support from the Tsinghua Astrophysics Outstanding Fellowship and the Tsinghua Shuimu Scholar Programme. JJ also acknowledges support from the Cambridge Trust and the Chinese Scholarship Council Joint Scholarship Programme (201604100032). CSR thanks the UK Science and Technology Facilities Council (STFC) for support under the New Applicant grant ST/R000867/1, and the European Research Council (ERC) for support under the European Union’s Horizon 2020 research and innovation programme (grant 834203). PK acknowledges support from the STFC. BDM acknowledges support from the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant agreement no. 798726. GM acknowledges funding by the Spanish State Research Agency (AEI) Project No. ESP2017-86582-C4-1-R and No. MDM-2017-0737 Unidad de Excelencia ‘María de Maeztu’ – Centro de Astrobiología (CSIC-INTA).
Funding AgencyGrant Number
European Research Council (ERC)340442
Tsinghua UniversityUNSPECIFIED
Cambridge Overseas TrustUNSPECIFIED
Chinese Scholarship Council201604100032
Science and Technology Facilities Council (STFC)ST/R000867/1
European Research Council (ERC)834203
Marie Curie Fellowship798726
Agencia Estatal de InvestigaciónESP2017-86582-C4-1-R
Agencia Estatal de InvestigaciónMDM-2017-0737
Subject Keywords:accretion, accretion discs, black hole physics, galaxies: Seyfert
Issue or Number:2
Record Number:CaltechAUTHORS:20200430-151241422
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Official Citation:A C Fabian, C S Reynolds, J Jiang, C Pinto, L C Gallo, M L Parker, A N Lasenby, W N Alston, D J K Buisson, E M Cackett, B De Marco, J Garcia, E Kara, P Kosec, M J Middleton, J M Miller, G Miniutti, D J Walton, D R Wilkins, A J Young, Blueshifted absorption lines from X-ray reflection in IRAS 13224−3809, Monthly Notices of the Royal Astronomical Society, Volume 493, Issue 2, April 2020, Pages 2518–2522,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102950
Deposited By: George Porter
Deposited On:01 May 2020 18:18
Last Modified:16 Nov 2021 18:17

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