Red quasars\: a special phase in the co-evolution of supermassive black holesquestionMark

From a systematic study of the radio properties of luminous red quasars in theSDSS, we have found clear evidence that distinguishes them from the more normalblue quasars, suggesting that they are a special stage in the coevolution ofAGN. To complement an ongoing VLT/XSHOOTER program exploring the differences inthe accretion disks of red quasars at z1.5, we propose new XMMNewtonobservations of 5 carefully selected targets, which, in combination with anarchival dataset of normal quasars, will allow a controlled study of differencesin (1) nuclear obscuring columns, (2) intrinsic Xray to optical spectral slope,and (3) coronal properties. Our study is designed to uncover whether red quasarshave systematically different accretion disks from normal quasars. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]