Study of the UV--X-ray Properties of Luminous Narrow-Line Quasars

The unusual properties of Narrowline Seyfert 1 galaxies are thoughtto result from a higher accretion rate relative to Eddington thanbroadline Seyferts. Luminous NLS1s should have the highest accretionrates of all. Xray observations are crucial to the study of highaccretion rate objects, as the effects of the high accretion rate areexpected be revealed by the radiation emerging in the vicinity of theblack hole. We propose observations of a small sample ofquasarluminosity NLS1s in order to characterize their Xray and broadband properties and constrain high accretion rate models. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]