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NuSTAR Reveals Relativistic Reflection But No Ultra-Fast Outflow In The Quasar PG 1211+143

Zoghbi, A. and Miller, J. M. and Walton, D. J. and Harrison, F. A. and Fabian, A. C. and Reynolds, C. S. and Boggs, S. E. and Christensen, F. E. and Craig, W. and Hailey, C. J. and Stern, D. and Zhang, W. W. (2015) NuSTAR Reveals Relativistic Reflection But No Ultra-Fast Outflow In The Quasar PG 1211+143. Astrophysical Journal Letters, 799 (2). Art. No. L24. ISSN 2041-8205. doi:10.1088/2041-8205/799/2/L24.

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We report on four epochs of observations of the quasar PG 1211+143 using NuSTAR. The net exposure time is 300 ks. Prior work on this source found suggestive evidence of an ultra-fast outflow (UFO) in the Fe K band with a velocity of approximately 0.1c. The putative flow would carry away a high-mass flux and kinetic power, with broad implications for feedback and black hole--galaxy co-evolution. NuSTAR detects PG 1211+143 out to 30 keV, meaning that the continuum is well-defined both through and above the Fe K band. A characteristic relativistic disk reflection spectrum is clearly revealed via a broad Fe K emission line and Compton back-scattering curvature. The data offer only weak constraints on the spin of the black hole. A careful search for UFOs shows no significant absorption feature above 90% confidence. The limits are particularly tight when relativistic reflection is included. We discuss the statistics and the implications of these results in terms of connections between accretion onto quasars, Seyferts, and stellar-mass black holes, and feedback into their host environments.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Zoghbi, A.0000-0002-0572-9613
Walton, D. J.0000-0001-5819-3552
Harrison, F. A.0000-0003-2992-8024
Fabian, A. C.0000-0002-9378-4072
Boggs, S. E.0000-0001-9567-4224
Christensen, F. E.0000-0001-5679-1946
Stern, D.0000-0003-2686-9241
Zhang, W. W.0000-0002-1426-9698
Additional Information:© 2015 American Astronomical Society. Received 2014 December 22; accepted 2015 January 6; published 2015 January 29. This work made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration.
Group:NuSTAR, Space Radiation Laboratory
Funding AgencyGrant Number
Subject Keywords:accretion, accretion disks; galaxies: active; galaxies: nuclei; quasars: absorption lines; quasars: individual (PG 1211+143)
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2015-86
Issue or Number:2
Record Number:CaltechAUTHORS:20150126-085830836
Persistent URL:
Official Citation:A. Zoghbi et al 2015 ApJL 799 L24
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54058
Deposited By: Joy Painter
Deposited On:26 Jan 2015 17:11
Last Modified:10 Nov 2021 20:28

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