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...
Main Authors: | , , , , , , , , , , |
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Format: | Journal article |
Language: | English |
Published: |
1996
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