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Tombesi, F, Veilleux, S, Meléndez, M, Lohfink, A, Reeves, JN, Piconcelli, E, Fiore, F and Feruglio, C (2017) NuSTAR View of the Black Hole Wind in the Galaxy Merger IRAS F11119+3257. Astrophysical Journal, 850 (2). p. 151. ISSN 0004-637X
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Abstract
Galactic winds driven by active galactic nuclei (AGNs) have been invoked to play a fundamental role in the co-evolution between supermassive black holes and their host galaxies. Finding observational evidence of such feedback mechanisms is of crucial importance and it requires a multi-wavelength approach in order to compare winds at different scales and phases. In Tombesi et al., we reported the detection of a powerful ultra-fast outflow (UFO) in the Suzaku X-ray spectrum of the ultra-luminous infrared galaxy IRAS F11119+3257. The comparison with a galaxy-scale OH molecular outflow observed with Herschel in the same source supported the energy-conserving scenario for AGN feedback. The main objective of this work is to perform an independent check of the Suzaku results using the higher sensitivity and wider X-ray continuum coverage of NuSTAR. We clearly detect a highly ionized Fe K UFO in the 100 ks NuSTAR spectrum with parameters N H = (3.2 ± 1.5) × 1024 cm−2, log ξ = ${4.0}_{-0.3}^{+1.2}$ erg s−1 cm, and ${v}_{\mathrm{out}}={0.253}_{-0.118}^{+0.061}c$. The launching radius is likely at a distance of r ≥ 16r s from the black hole. The mass outflow rate is in the range of ${\dot{M}}_{\mathrm{out}}$ sime 0.5–2 M ⊙ yr−1. The UFO momentum rate and power are ${\dot{P}}_{\mathrm{out}}$ sime 0.5–2 L AGN/c and ${\dot{E}}_{\mathrm{out}}$ sime 7%–27% L AGN, respectively. The UFO parameters are consistent between the 2013 Suzaku and the 2015 NuSTAR observations. Only the column density is found to be variable, possibly suggesting a clumpy wind. The comparison with the energetics of molecular outflows estimated in infrared and millimeter wavelengths support a connection between the nuclear and galaxy-scale winds in luminous AGNs.
Item Type: | Article |
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Additional Information: | © IOP Science/American Astronomical Society. This is the final published version of the article (version of record). It first appeared online via IOP at https://doi.org/10.3847/1538-4357/aa9579 - please refer to any applicable terms of use of the publisher. |
Uncontrolled Keywords: | black hole physics, galaxies, active, line, identification, X-rays, galaxies |
Subjects: | Q Science > QB Astronomy > QB460 Astrophysics |
Divisions: | Faculty of Natural Sciences > School of Physical and Geographical Sciences |
Depositing User: | Symplectic |
Date Deposited: | 04 Dec 2017 16:46 |
Last Modified: | 18 Mar 2019 15:57 |
URI: | https://eprints.keele.ac.uk/id/eprint/4286 |