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|Title: ||A high-velocity ionized outflow and XUV photosphere in the narrow emission line quasar PG1211+143|
|Authors: ||Pounds, Kenneth A.|
King, Andrew R.
Page, Kim L.
O'Brien, Paul T.
Turner, Martin J.L.
|Issue Date: ||Nov-2003|
|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|
|Version: ||Publisher PDF|
|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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