j.1365-2966.2006.11170.x.pdf (394.76 kB)
Is the X-ray spectrum of the narrow emission line QSO PG1211+143 defined by its energetic outflow?
journal contribution
posted on 2009-12-08, 16:25 authored by Kenneth A. Pounds, J.N. ReevesAn 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 Previously unpublished data from a second XMM–Newton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.
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Citation
Monthly Notices of the Royal Astronomical Society, 2007, 374 (3), pp.823-831.Version
- VoR (Version of Record)
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Monthly Notices of the Royal Astronomical SocietyPublisher
Blackwellissn
0035-8711eissn
1365-2966Copyright date
2007Available date
2009-12-08Publisher DOI
Publisher version
http://mnras.oxfordjournals.org/content/374/3/823Language
enAdministrator link
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