Physics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop...10s&link_type=abstract
XMM-Newton Proposal ID #03003102
Physics
Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Pg 1535+547, Pg 2112+059, Xmm-Newton Proposal 03003102
Scientific paper
Recent XMM-Newton and Chandra observations show strong indications that X-ray weak quasar's spectra harbor a relativistically broaden iron line. Three obser- vations of X-ray weak quasars show unique absorbing material with physical con- ditions, which are not comparable with the absorbers described for AGNs so far: The absorbers in X-ray weak quasars have much higher column density and ionizat- ion parameter. This can be understood if our line of sight to the nucleus grazes the upper tip of the torus. We propose observations of two X-ray weak quasars for which relativistic iron lines have been detected to determine the line physical parameters. We want to measure the disk inclination angle and to check if it is aligned with the viewing angle suggested by the absorption features.
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