XMM-Newton Proposal 02041903

Details XMM-Newton Proposal 02041903 XMM-Newton Proposal 02041903

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..224y&link_type=abstract

XMM-Newton Proposal ID #02041903

Physics

Pmn J1451-1512, Pmn J0324-2918, Pks B1251-407, Xmm-Newton Proposal 02041903

Scientific paper

We propose to pursue a systematic XMM spectroscopic survey of all known bright (S_5GHz gt 90mJy) radio-loud quasars above a redshift of 4. The proposed sample consists of 6 new radio-loud quasars with redshifts above 4, The XMM observations, combined with the results from the previously observed 4 objects, will address the basic questions concerning the soft X-ray spectral flattening effect as found previously (e.g. Yuan et al. 2000, Fabian et al. 2001). The results are expected to help to discriminate the models of intrinsic flattening and X-ray absorption and, if the latter, will yield insight about the nature of the possible obscuring matter associated with radio-loud quasars in the early Universe.

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