XMM-Newton Proposal 03006302

Details XMM-Newton Proposal 03006302 XMM-Newton Proposal 03006302

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop...23f&link_type=abstract

XMM-Newton Proposal ID #03006302

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Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, [Hb89] 0552+398, Pks 0237-23, Xmm-Newton Proposal 03006302

Scientific paper

Giga-Hertz-Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sources are believed to be either young or ``frustrated versions'' of the large-scale radio sources. In X-ray surveys they constitute a high fraction of sources at high redshifts, they are the brightest quasars at radio, optical, and X-ray wavelengths, and they are frequently associated with intrinsic excess absorption. High-z quasars give, on the other hand, precious information on the physical conditions in the early Universe. We propose an observation of a sample of high-z GPS quasars, with the purposes of studying the connection between the GPS phenomenon and intrinsic absorption at high redshift and to examine the spectral differences with respect to the bulk of radio-loud quasars.

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