X-ray Absorption in the Most-Distant RLQs: Widespread or ExceptionalquestionMark

We propose XMMNewton spectroscopy of five typical radioloud quasars (RLQs) atz 3.984.97. Our main goal is to search for Xray absorption to determine ifit is common among RLQs at the highest redshifts, or if instead it is largelyconfined to the exceptional minority of extremely radioloud objects. Theresults will clarify whether such absorption is a widespread environmentalphenomenon or instead linked with a powerful jet directed almost precisely alongthe line of sight. Our proposed targets are much more representative of theoverall RLQ population than the small number of highly radioloud blazarsstudied at z virgul 4. We will also measure Xray continuum shapes and search forvariability and clustered AGNs. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]