XMM-Newton Proposal 03060509

Details XMM-Newton Proposal 03060509 XMM-Newton Proposal 03060509

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop..198g&link_type=abstract

XMM-Newton Proposal ID #03060509

Computer Science

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Ngc6264, Mrk1419, Ngc6323, Mrk34, Ngc6926, Ngc5793, Xmm-Newton Proposal 03060509

Scientific paper

The light of AGN dominates the hard cosmic X-ray background (HCXB). However, the contribution of Compton thick objects is poorly constrained because they emit chiefly above the energy range where Chandra and XMM instruments are most sensitive. However, preliminary analyses have shown that the occurrence of water maser emission from AGN accretion disks (1.3 cm wavelength) is correlated with obscuring column; most lie in Compton thick nuclei. We propose EPIC study of ten maser galaxies to confirm the correlation by doubling the underlying sample and to improve estimates of local space density for Compton thick systems. We suggest radio surveys to discover new masers in AGN may be an efficient means to identify Compton thick systems and aid the study of the HCXB.

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