Revealing the nature of the extreme blueshifted iron line profile in PG1402+261

Details Revealing the nature of the extreme blueshifted iron line profile in PG1402+261 Revealing the nature of the extreme blueshifted iron line profile in PG1402+261

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop....7r&link_type=abstract

XMM-Newton Proposal ID #04002001

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Pg 1402+261, Xmm-Newton Proposal 04002001

Scientific paper

We propose to observe the NLS1 PG 1402+261 (at z=0.164). A short 9ks observation revealed an unusually strong (EW=2keV) and very broad Fe K emission line. The line centroid energy at 7.3 keV appears blue-shifted with respect to the Fe Ka band, while the blue-wing of the line extends to 9 keV. The line profile can be fitted with reflection from a disk around a Kerr black hole, but requires an inclination in excess of 60 degrees, inconsistent with AGN unified models. Alternatively the spectrum may be explained by a large column density, high ionization absorber from a powerful outflow. We propose for 2x50ks XMM-Newton observations to distinguish between the disk reflection and outflow scenarios. The longer timescale will enable us to monitor the variability of the strong Fe K feature.

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