[Ne V]-selected heavily obscured QSOs at the epoch of the X-ray background

Details [Ne V]-selected heavily obscured QSOs at the epoch of the X-ray background [Ne V]-selected heavily obscured QSOs at the epoch of the X-ray background

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..107g&link_type=abstract

XMM-Newton Proposal ID #06727201

Computer Science

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Sdssj080859

Scientific paper

Despite extensive searches over a wide wavelength range, the population of heavily obscured, Compton-thick AGN still remains elusive. In particular, at high redshifts and luminosities only a few Compton-thick objects have been discovered. We propose a pilot program of moderately deep XMM exposures (40 to 80 ksec each) to observe 3 luminous QSOs at z~1, which is the epoch where the bulk of the ``missing'' X-ray background is expected to be produced. These QSOs are likely to suffer from heavy obscuration. The targets have been selected from the SDSS DR5 based on their strong [NeV]3427A emission. The proposed observations will unambiguously determine their obscuration degree.

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