Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26645
Title: | The Soft X-ray View of Ultra Fast Outflows | Authors: | Reeves, J. BRAITO, Valentina NARDINI, EMANUELE Matzeu, G. Lobban, A. Costa, M. Pounds, K. Tombesi, Francesco Behar, E. |
Issue Date: | 2017 | Volume: | The X-ray Universe 2017 | First Page: | 188 | Abstract: | The recent large XMM-Newton programmes on the nearby quasars PDS 456 and PG 1211+143 have revealed prototype ultra fast outflows in the iron K band through highly blue shifted absorption lines. The wind velocities are in excess of 0.1c and are likely to make a significant contribution to the host galaxy feedback. Here we present evidence for the signature of the fast wind in the soft X-ray band from these luminous quasars, focusing on the spectroscopy with the RGS. In PDS 456, the RGS spectra reveal the presence of soft X-ray broad absorption line profiles, which suggests that PDS 456 is an X-ray equivalent to the BAL quasars, with outflow velocities reaching 0.2c. In PG 1211, the soft X-ray RGS spectra show a complex of several highly blue shifted absorption lines over a wide range of ionisation and reveal outflowing components with velocities between 0.06-0.17c. For both quasars, the soft X-ray absorption is highly variable, even on timescales of days and is most prominent when the quasar flux is low. Overall the results imply the presence of a soft X-ray component of the ultra fast outflows, which we attribute to a clumpy or inhomogeneous phase of the disk wind. | Conference Name: | The X-ray Universe 2017 | Conference Place: | Rome, Italy | Conference Date: | 6-9 June, 2017 | URI: | http://hdl.handle.net/20.500.12386/26645 | URL: | https://www.cosmos.esa.int/documents/332006/1402684/JReeves_t.pdf https://www.cosmos.esa.int/web/xmm-newton/2017-symposium |
Bibcode ADS: | 2017xru..conf..188R | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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JReeves_t.pdf | Talk | 1.96 MB | Adobe PDF | View/Open |
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