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Confirming the high velocity outflow in PG 1211+143

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journal contribution
posted on 24.09.2021, 11:07 by KA Pounds, KL Page
An XMM-Newton observation of the bright QSO PG1211+143 was previously reported to show evidence for a massive, energetic outflow, with an outflow velocity of v~0.1c based on the identification of blue-shifted absorption lines detected in both EPIC and RGS spectra. Subsequently, an order-of-magnitude lower velocity has been claimed from an ion-by-ion model fit to the RGS data. We show here, in a re-analysis of the higher signal-to-noise EPIC data, that the high velocity is confirmed, with the resolution of additional absorption lines yielding a revised outflow velocity in the range ~0.13-0.15c. Confirmation of a massive and energetic outflow in a non-BAL AGN has important implications for metal enrichment of the IGM and for the feedback mechanism implied by the correlation of black hole and galactic bulge masses. We note the near-Eddington luminosity of PG1211+143 may be the critical factor in driving such an energetic outflow, a situation likely to be common in AGN at higher redshift.

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Citation

Monthly Notices of the Royal Astronomical Society, 372 (3), pp. 1275-1278

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy

Version

VoR (Version of Record)

Published in

Monthly Notices of the Royal Astronomical Society

Volume

372

Issue

3

Pagination

1275-1278

Publisher

Oxford University Press (OUP) for Royal Astronomical Society

issn

1365-2966

Acceptance date

10/08/2006

Copyright date

2006

Available date

24/09/2021

Language

en

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