084044

Recent investigations of weak-line quasars openParWLQsclosePar have led us to propose a simple model where a thick inner accretion disk comma associated with an extremely high Eddington ratio comma is responsible for both their weak lines and remarkable X-ray properties. We propose to test this model with a long observation of the optically ultraluminous WLQ SDSS J1521+5202. Our Chandra data show this source has a strikingly hard X-ray spectrum suggesting heavy absorption. The proposed high-quality XMM-Newton spectrum will determine if we are seeing the model.s predicted Compton-reflection dominated continuum due to Compton-thick absorption by the inner disk. If confirmed comma our model will help establish relationships between inner accretion-disk properties and the accretion rate in all quasars.