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arxiv 2310.18105 v2 pith:UTYISVW2 submitted 2023-10-27 astro-ph.HE astro-ph.GA

Observing the launch of an Eddington wind in the luminous Seyfert galaxy PG1211+143

classification astro-ph.HE astro-ph.GA
keywords launchluminousmassoutflowpg1211xmm-newtondiscgalaxy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The luminous narrow line Seyfert galaxy PG1211+143 was the first non-BAL AGN to reveal a powerful ionized wind, based on early observations with ESA's XMM-Newton X-ray Observatory. Subsequent observations, mainly with XMM-Newton and the Japanese Suzaku Observatory, found such winds to be a common feature of luminous AGN. Typical outflow velocities of v ~ 0.1c and flow momenta mv ~ L_Edd /c are consistent with winds being launched by continuum driving from a disc when the local mass accretion rate is super-Eddington. Here we report the launch of a new, ultra-fast outflow component in PG1211+143, near the end of a 5-week XMM-Newton observing campaign, and discuss its origin in an ultra-fast {\it inflow} detected some 3 weeks earlier. We note that the inflow lasted for at least 3 days and delivered at least 10 Earth mass of fresh material into the innermost region of the source. While this mass by itself is insufficient to cause a complete inner disc restructuring - a prediction supported by lack of change in simultaneous UV fluxes - we suggest that a ring of matter at R ~ 20 R_g, located via its gravitational redshift (Pounds and Page 2024), was subsequently accreted, leading to the launch of a new outflow at a velocity of v ~ 0.27c.

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  1. First detection of ultra-fast outflows in a quiescent galaxy

    astro-ph.GA 2026-07 conditional novelty 7.0

    First detection of an ultra-fast outflow (v≈0.07c) in a quiescent galaxy quenched ~9 Gyr ago, suggesting AGN winds can maintain quiescence independent of global star formation.