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Deep Survey Sources, and Predictions for XMM and AXAF

Ptak, A.; Georgantopoulos, I.; Griffiths, R. E. +6 more

From the deep surveys performed with the ROSAT and ASCA X-ray observatories, we have now built up a plausible picture of the constitution of the X-ray background and the way in which AGNs (and starburst nuclei surrounding AGNs) account for it. But major problems remain: the best model that we have is one in which the XRB above 3 kev is accounted f…