Dewangan et al. report the detection of a low frequency break and a QPO in the ULX M82 X-1. This is characteristic of an XRB in a high or intermediate state. The BH mass is estimated at 50-260 Solar masses.
Peterson et al. take a sample of nearby well-studied AGN and artificially redshift them to z=0.3 then consider what would be seen in a Chandra survey. They argue that these objects look like the "normal" and "optically-bright X-ray-faint" galaxy populations suggesting that these objects may contribute to the hard X-ray background.
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