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• W2040222334 endingPage "207" @default.
• W2040222334 startingPage "195" @default.
• W2040222334 abstract "XMM-Newton observations of 29 high-redshift (z > 2) quasars, including seven radio-quiet, 16 radio-loud and six broad absorption line (BAL) objects, are presented; due to the high redshifts, the rest-frame energy bands extend up to ~30–70 keV. Over 2–10 keV, the quasars can be well fitted in each case by a simple power law, with no strong evidence for iron emission lines. The lack of iron lines is in agreement both with dilution by the radio jet emission (for the radio-loud quasars) and the X-ray Baldwin effect. No Compton reflection humps at higher energies (i.e. above 10 keV in the rest frame) are detected either. Over the broad-band (0.3–10 keV), approximately half (nine out of 16) of the radio-loud quasars are intrinsically absorbed, with the values of NH generally being 1 × 1022 to 2 × 1022 cm−2 in the rest frames of the objects. None of the seven radio-quiet objects shows excess absorption, while four of the six BAL quasars are absorbed. The radio-loud quasars have flatter continuum slopes than their radio-quiet counterparts (ΓRL~ 1.55; ΓRQ~ 1.98 over 2–10 keV), while, after modelling the absorption, the underlying photon index for the six BAL quasars is formally consistent with the non-BAL radio-quiet objects." @default.
• W2040222334 created "2016-06-24" @default.
• W2040222334 creator A5030720985 @default.
• W2040222334 creator A5034340850 @default.
• W2040222334 creator A5042880953 @default.
• W2040222334 creator A5060680432 @default.
• W2040222334 date "2005-11-21" @default.
• W2040222334 modified "2023-09-29" @default.
• W2040222334 title "XMM-Newton spectroscopy of high-redshift quasars" @default.
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• W2040222334 doi "https://doi.org/10.1111/j.1365-2966.2005.09550.x" @default.
• W2040222334 hasPublicationYear "2005" @default.
• W2040222334 type Work @default.
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