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Evidence for Relativistic Disk Reflection in the Seyfert 1h Galaxy/ULIRG IRAS 05189–2524 Observed by NuSTAR and XMM-Newton

Xu, Yanjun and Baloković, Mislav and Walton, Dominic J. and Harrison, Fiona A. and García, Javier A. and Koss, Michael J. (2017) Evidence for Relativistic Disk Reflection in the Seyfert 1h Galaxy/ULIRG IRAS 05189–2524 Observed by NuSTAR and XMM-Newton. Astrophysical Journal, 837 (1). Art. No. 21. ISSN 0004-637X. doi:10.3847/1538-4357/aa5df4.

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We present a spectral analysis of the NuSTAR and XMM-Newton observations of the Seyfert 1h galaxy/ULIRG IRAS 05189–2524 taken in 2013. We find evidence for relativistic disk reflection in the broadband X-ray spectrum: a highly asymmetric broad Fe Kα emission line extending down to 3 keV and a Compton scattering component above 10 keV. Physical modeling with a self-consistent disk reflection model suggests that the accretion disk is viewed at an intermediate angle with a supersolar iron abundance, and a mild constraint can be put on the high-energy cutoff of the power-law continuum. We test the disk reflection modeling under different absorption scenarios. A rapid black hole spin is favored; however, we cannot place a model-independent tight constraint on the value. The high reflection fraction (R_(ref) ≃ 2.0–3.2) suggests that the coronal illuminating source is compact and close to the black hole (lying within 8.7 R_g above the central black hole), where light-bending effects are important.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Xu, Yanjun0000-0003-2443-3698
Baloković, Mislav0000-0003-0476-6647
Walton, Dominic J.0000-0001-5819-3552
Harrison, Fiona A.0000-0003-2992-8024
García, Javier A.0000-0003-3828-2448
Koss, Michael J.0000-0002-7998-9581
Additional Information:© 2017 The American Astronomical Society. Received 2016 November 4; revised 2017 January 31; accepted 2017 January 31; published 2017 February 28. We thank the anonymous referee for helpful comments that improved the paper. M.B. acknowledges support from NASA Headquarters under the NASA Earth and Space Science Fellowship Program, grant NNX14AQ07H. This work was supported under NASA Contract no. NNG08FD60C and made use of data obtained with NuSTAR, a project led by Caltech, funded by NASA, and managed by NASA/JPL, and has utilized the NUSTARDAS software package, jointly developed by the ASDC (Italy) and Caltech (USA). We thank the NuSTAR Operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has also made use of data obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States.
Group:NuSTAR, Space Radiation Laboratory, Astronomy Department
Funding AgencyGrant Number
NASA Earth and Space Science FellowshipNNX14AQ07H
Alexander von Humboldt FoundationUNSPECIFIED
Swiss National Science Foundation (SNSF)UNSPECIFIED
Subject Keywords:accretion, accretion disks – black hole physics – galaxies: active – galaxies: individual (IRAS 05189–2524) – galaxies: Seyfert – X-rays: galaxies
Issue or Number:1
Record Number:CaltechAUTHORS:20170228-110354967
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Official Citation:Yanjun Xu et al 2017 ApJ 837 21
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74593
Deposited By: Tony Diaz
Deposited On:28 Feb 2017 19:19
Last Modified:11 Nov 2021 05:28

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