The remarkable X-ray spectrum of the luminous red QSO FTM J0830+3759

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Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Ftm J0830+3759, Xmm-Newton Proposal Id #05545401

Scientific paper

We propose a 50 ks XMM-Newton observation of the X-ray luminous, Type 1 QSO FTM J0830+3785 (z=0.413). We aim at obtaining the first high-quality spectrum of this recently-discovered 2MASS QSO to assess its peculiar X-ray spectral properties. A very short 9 ks Chandra observation has revealed the statistically significant presence of puzzling emission/absorption line-like features at energies which do not correspond to any obvious rest-frame atomic transition. Similar features are observed in the spectra of a handful of intensively-studied Seyferts and attributed to relativistically-moving material surrounding the nuclear X-ray source, but have never been seen in the spectra of members of the poorly-studied, high luminosity (LX >10e45 erg/s) dust-reddened QSO population.

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