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Testing relativistic reflection and resolving outflows in PG 1211+143 with XMM-Newton and NuSTAR

Lobban, A. P. and Pounds, K. and Vaughan, S. and Reeves, J. N. (2016) Testing relativistic reflection and resolving outflows in PG 1211+143 with XMM-Newton and NuSTAR. Astrophysical Journal, 831 (2). Art. No. 201. ISSN 0004-637X. doi:10.3847/0004-637X/831/2/201.

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We analyze the broad-band X-ray spectrum (0.3–50 keV) of the luminous Seyfert 1/quasar PG 1211+143—the archetypal source for high-velocity X-ray outflows—using near-simultaneous XMM-Newton and NuSTAR observations. We compare pure relativistic reflection models with a model including the strong imprint of photoionized emission and absorption from a high-velocity wind, finding a spectral fit that extrapolates well over the higher photon energies covered by NuSTAR. Inclusion of the high signal-to-noise ratio XMM-Newton spectrum provides much tighter constraints on the model parameters, with a much harder photon index/lower reflection fraction compared to that from the NuSTAR data alone. We show that pure relativistic reflection models are not able to account for the spectral complexity of PG 1211+143 and that wind absorption models are strongly required to match the data in both the soft X-ray and Fe K spectral regions. In confirming the significance of previously reported ionized absorption features, the new analysis provides a further demonstration of the power of combining the high throughput and resolution of long-look XMM-Newton observations with the unprecedented spectral coverage of NuSTAR.

Item Type:Article
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Lobban, A. P.0000-0002-6433-1357
Additional Information:© 2016 The American Astronomical Society. Received 2016 April 6; revised 2016 August 22; accepted 2016 September 5; published 2016 November 9. This research has made use of the NASA Astronomical Data System (ADS), the NASA Extragalactic Database (NED) and is based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA, and the NuSTAR mission, a project led by the California Institute of Technology (Caltech), managed by the Jet Propulsion Laboratory (JPL). APL and SV acknowledge support from STFC consolidated grant ST/K001000/1 and JNR acknowledges financial support via NASA grant NNX15AF12G. We thank an anonymous referee for highly constructive comments which helped improve the clarity of the paper. Facilities: XMM-Newton (EPIC), NuSTAR.
Subject Keywords:accretion, accretion disks – black hole physics – galaxies: active – galaxies: individual (PG 1211+143) – quasars: absorption lines
Issue or Number:2
Record Number:CaltechAUTHORS:20160908-134633517
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Official Citation:A. P. Lobban et al 2016 ApJ 831 201
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70212
Deposited By: Joy Painter
Deposited On:09 Sep 2016 00:08
Last Modified:11 Nov 2021 04:26

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