Please use this identifier to cite or link to this item:
Title: Is the X-ray spectrum of the narrow emission line QSO PG1211+143 defined by its energetic outflow?
Authors: Pounds, Kenneth A.
Reeves, J.N.
First Published: 2007
Publisher: Blackwell
Citation: Monthly Notices of the Royal Astronomical Society, 2007, 374 (3), pp.823-831.
Abstract: An XMM–Newton observation of the bright QSO PG1211+143 in 2001 revealed a blueshifted absorption line spectrum indicative of a high-velocity radial outflow of highly ionized gas. Unless highly collimated, the outflow mass rate was shown to be comparable to the accretion rate, with mechanical energy a significant fraction of the bolometric luminosity. Analysis of the full XMM–Newton data set now allows the wider effects of that energetic outflow to be explored.We find that absorption and re-emission of the primary continuum flux in the ionized outflow, together with a second, less strongly absorbed, continuum component can explain the strong ‘soft excess’ in PG1211+143 without the extreme velocity ‘smearing’ in conflict with observed absorption line widths. Previously unpublished data from a second XMM–Newton observation of PG1211+143 is shown to be consistent with the new spectral model, finding that the additional continuum component dominates the spectral variability.We speculate that this variable continuum component is powered by the high-velocity outflow.
DOI Link: 10.1111/j.1365-2966.2006.11170.x
ISSN: 0035-8711
eISSN: 1365-2966
Version: Publisher version
Status: Peer-reviewed
Type: Article
Rights: © The Authors. Journal compilation © 2007 Royal Astronomical Society (RAS). Deposited with reference to the publisher's archiving policy available on the journal's website.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat 
j.1365-2966.2006.11170.x.pdf394.76 kBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.