http://arxiv.org/abs/1708.03546
We present a newly discovered correlation between the wind outflow velocity and the X-ray luminosity in the luminous ($L_{\rm bol}\sim10^{47}\,\rm erg\,s^{-1}$) nearby ($z=0.184$) quasar PDS\,456. All the contemporary \textit{XMM-Newton}, \textit{NuSTAR} and \textit{Suzaku} observations from 2001–2014 were revisited and we find that the centroid energy of the blueshifted Fe\,K absorption profile increases with luminosity. This translates into a correlation between the wind outflow velocity and the hard X-ray luminosity (between 7–30\,keV) where we find that $v_{\rm w}/c \propto L_{7-30}^{\gamma}$ where $\gamma=0.22\pm0.04$. We also show that this is consistent with a wind that is predominately radiatively driven, possibly resulting from the high Eddington ratio of PDS\,456.
G. Matzeu, J. Reeves, V. Braito, et. al.
Mon, 14 Aug 17
4/46
Comments: 5 pages, 3 figures. Accepted for publication in MNRAS Letter
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