The HELLAS2XMM 1DF Survey: a Window on Exotic Hard X-Ray Selected Sources

Details The HELLAS2XMM 1DF Survey: a Window on Exotic Hard X-Ray Selected Sources The HELLAS2XMM 1DF Survey: a Window on Exotic Hard X-Ray Selected Sources

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005tmgm.meet.1293v&link_type=abstract

The Tenth Marcel Grossmann Meeting. Proceedings of the MG10 Meeting held at Brazilian Center for Research in Physics (CBPF), Rio

Physics

Scientific paper

Recent Chandra and XMM-Newton surveys have confirmed that the cosmic X-ray background is mostly due to accretion onto super-massive black holes, integrated over cosmic time. Here we review the results obtained from the photometric and spectroscopic follow-up observations of the 122 X-ray sources detected by the HELLAS2XMM 1dF Survey down to a 2-10 keV flux of ≈ 10-14 erg cm-2 s-1. In particular, we focus on the multi-wavelength properties of a few intriguing classes of X-ray sources: high X-ray-to-optical flux ratio sources, Type 2 quasars, and XBONGs.

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