The evidence for a radiatively driven disc-wind in PDS 456
Abstract
We present a new result, where we find a direct correlation between the disc-wind outflow velocity and the luminosity in the nearby (z=0.184) luminous (L_{bol}∼10^{47} erg s^{-1}) quasar PDS 456. We analysed all the contemporary XMM-Newton, NuSTAR and Suzaku observations between 2001-2014. We find that the centroid energy of the blue-shifted Fe K profile increases with luminosity. This translates into a positive correlation between the disc-wind outflow velocity and the hard X-ray luminosity, where the wind velocity increases as v_{w} ∝ L^{1/4}. We show that this is consistent with a wind that is predominately radiatively driven in PDS 456, possibly resulting from its high Eddington ratio.
- Publication:
-
The X-ray Universe 2017
- Pub Date:
- October 2017
- Bibcode:
- 2017xru..conf..144M