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On the relevance of ultra-fast outflows (UFOs) in AGNs

On the relevance of ultra-fast outflows (UFOs) in AGNs. UFOs. Non-UFOs. ~10 2 -10 4 Rs ; 10 4 -10 5 Rs. M. Cappi (1), F . Tombesi (2,3), M. Dadina (1), V. Braito (4). (1) ) INAF- IASFbo (2)NASA-GSFC (3) UMD (4) INAF Brera.

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On the relevance of ultra-fast outflows (UFOs) in AGNs

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  1. On the relevance of ultra-fast outflows (UFOs) in AGNs UFOs Non-UFOs ~102-104Rs; 104-105 Rs M. Cappi (1), F. Tombesi (2,3), M. Dadina (1), V. Braito (4) (1) ) INAF-IASFbo (2)NASA-GSFC (3) UMD (4) INAF Brera During the last decade, several observational evidences have been accumulated for the existence of massive, high velocity winds/outflows (aka UFOs) in nearby AGNs and, possibly, distant quasars. We present here a short selection of such evidences, summarize their relevance for both understanding the physics of accretion/ejection flows in AGNs, and for quantifying the amount of AGN feedback. We also show a flavor of the potential (excellent) contribution of ASTRO-H to these studies. X-ray Spectral Surveys of nearby, bright AGNs and QSOs XMM-Newton: 2 examples of AGN XMM spectra showing absorption lines from highly ionized and blueshifted Fe lines SUZAKU: 2 examples of AGN spectra showing absorption lines from highly ionized and blueshifted Fe lines The sample (100 observations, 42AGNs) The sample (59 observations, 45 AGNs) Tombesi et al. 2010, 2011 (A&A, 521, 57; ApJ, 742, 44) Gofford et al. 2011 (arxiv:1201.3178v1) Ultra Fast Outflows (akaUFOs) haveextremeproperties (Nh, Xi, and v) and are common in nearbySeyfertgalaxies ASTRO-H simulatedspectra UFOsaverageproperties Jet ASTRO-H simulated spectra showing absorption lines from highly ionized and blueshifted Fe lines UFO Black Hole Accretion Disc • UFOs = extremes of Warm Absorbers? • UFOs consistent with MHD-driven winds? Active Galaxy PDS456 (z=0.19) UFOs Non-UFOs ~0.02-1 % Lbol ~0.5-100 % Lbol • ASTRO-H will allow to: • i) characterize (best than ever) the outflow properties (Nw, , out,) • ii) constrain geometry and filling factors (from line profiles) • iii) final estimate of AGN feedback due to UFOs/winds • UFOslikelyenergeticallyimportant in terms of feedback (~0.5-100% Lbol) Tombesi et al. 2012 (MNRAS, 422, L1) + ESA/NASA/INAF press releases on Feb. 27th Conclusions UFOs are common in AGNs, have extreme properties (in terms of Nw, , and out ) and may well play an important (maybe dominant) role in feedback. ASTRO-H combination of SXS and HXI will revolutionize this field by allowing the best-ever chartcterization of the winds properties, its geometry, filling factor, and overall feedback impact.

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