Computer Science
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop...50m&link_type=abstract
XMM-Newton Proposal ID #03014504
Computer Science
Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, H 0439-272, Ark 374, Fairall 1116, Pg 0052+251, Xmm-Newton Proposal 03014504
Scientific paper
We propose to observe, for 20 ks each, 4 bright (F{2-10)>2x10^{-11} erg/cm2/s) and luminous (L(2-10}>10^{44} erg/s) radio-quiet AGN from the Grossan HEAO1 catalog. The sources have been selected among those not yet observed by imaging hard X-ray instruments, but that were bright enough in ROSAT PSPC to make identification secure. The observation of these bright and luminous objects will substantially contribute to fill our knowledge gap on the spectral properties of luminous Seyferts, which are still poorly known. The main aim of the proposal is, by comparison with less luminous sources to search for luminosity-dependent spectral properties, and in particular to test the so-called "X-ray Baldwin" effect, i.e. the diminution of the iron line EW with luminosity.
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