RE J1034+396: the origin of the soft X-ray excess and quasi-periodic oscillation

@article{Middleton2009REJT,
  title={RE J1034+396: the origin of the soft X-ray excess and quasi-periodic oscillation},
  author={Matthew J. Middleton and C. Done and Martin J. Ward and Marek Gierliński and Nicholas J. Schurch},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2009},
  volume={394},
  pages={250-260}
}
The X-ray quasi-periodic oscillation (QPO) seen in RE J1034+396 is so far unique amongst active galactic nuclei (AGN). Here, we look at another unique feature of RE J1034+396, namely its huge soft X-ray excess, to see if this is related in any way to the detection of the QPO. We show that all potential models considered for the soft energy excess can fit the 0.3–10 keV X-ray spectrum, but the energy dependence of the rapid variability (which is dominated by the QPO) strongly supports a spectral… 

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