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Paper: The Ultra-Fast Outflow in the Quasar PG 1211+143
Volume: 460, AGN Winds in Charleston
Page: 13
Authors: Reeves, J.; Pounds, K.
Abstract: The evidence for an ultra-fast outflow in the quasar PG 1211+143 is re-examined. A fast outflow, measured in terms of blueshifted He or H-like 1s–2p lines from Fe, S, Mg and Ne, is required at high confidence and is measured independently in both of the pn and MOS detectors on-board XMM-Newton. Indeed a null hypothesis model of no blue-shifted absorption is rejected with a negligible probability of 6.5 × 10–30 in the 2001 XMM-Newton observations. Furthermore the iron K shell absorption profile is detected in all of the 2001, 2004 and 2007 observations, with consistent parameters within the errors. The mass outflow rate derived from the observations lies within the likely range from 1.5 – 10 M yr-1, with an outflow velocity of 0.10 ± 0.01c. The minimum mechanical power derived for the outflow is then 4 × 1044 erg s-1, at least 10% of the quasar bolometric luminosity.
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