X-ray QSO evolution from a very deep ROSAT survey

In the deepest optically identified X-ray survey yet performed, we have identified 32 X-ray selected QSOs to a flux limit of 2x10^{-15} erg cm^{-2} s^{-1} (0.5-2 keV). The survey, performed with the ROSAT PSPC, has 89% spectroscopic completeness. The QSO log(N)-log(S) relation is found to have a bre...

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Bibliographic Details
Main Authors: Jones, L, McHardy, I, Merrifield, MR, Mason, K, Smith, P, Abraham, R, Branduardi-Raymont, G, Newsam, A, Dalton, G, Rowan-Robinson, M, Luppino, G
Format: Journal article
Language:English
Published: 1996