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Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/198

Title: A high-velocity ionized outflow and XUV photosphere in the narrow emission line quasar PG1211+143
Authors: Pounds, Kenneth A.
Reeves, J. N.
King, Andrew R.
Page, Kim L.
O'Brien, Paul T.
Turner, Martin J. L.
Issue Date: Nov-2003
Publisher: Blackwell
Citation: Monthly Notices of the Royal Astronomical Society, 2003, 345, pp.705-713.
Abstract: We report on the analysis of a 60-ks XMM–Newton observation of the bright, narrow emission line quasar PG1211+143. Absorption lines are seen in both European Photon Imaging Camera and Reflection Grating Spectrometer spectra corresponding to H- and He-like ions of Fe, S, Mg, Ne, O, N and C. The observed line energies indicate an ionized outflow velocity of 24 000 km s1. The highest energy lines require a column density of NH 5 × 1023 cm2, at an ionization parameter of log ξ 3.4. If the origin of this high-velocity outflow lies in matter being driven from the inner disc, then the flow is likely to be optically thick within a radius of 130 Schwarzschild radii, providing a natural explanation for the big blue bump (and strong soft X-ray) emission in PG1211+143.
DOI Link: 10.1046/j.1365-8711.2003.07006.x
ISSN: 0035-8711
eISSN: 1365-2966
Links: http://hdl.handle.net/2381/198
http://onlinelibrary.wiley.com/journal/10.111(...)
Version: Publisher PDF
Status: Peer-reviewed
Type: Article
Rights: © 2003 Royal Astronomical Society (RAS). Deposited with reference to the publisher's archiving policy available on the journal's website.
Description: The definitive version is available from www.blackwell-synergy.com. Erratum published in Monthly Notices of the Royal Astronomical Society, 2005, 356, p.1599
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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