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 |
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1996
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| _version_ | 1797093427061456896 |
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| author | Jones, L McHardy, I Merrifield, MR Mason, K Smith, P Abraham, R Branduardi-Raymont, G Newsam, A Dalton, G Rowan-Robinson, M Luppino, G |
| author_facet | Jones, L McHardy, I Merrifield, MR Mason, K Smith, P Abraham, R Branduardi-Raymont, G Newsam, A Dalton, G Rowan-Robinson, M Luppino, G |
| author_sort | Jones, L |
| collection | OXFORD |
| description | 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 break to a flat slope at faint fluxes. The surface density of QSOs at the survey limit is 230+/-40 per square degree, the largest so far of any QSO survey. We have used this survey to measure the QSO X-ray luminosity function at low luminosities (Lx<10^{44.5} erg s^{-1}) and high redshifts (1 |
| first_indexed | 2024-03-07T04:00:12Z |
| format | Journal article |
| id | oxford-uuid:c44ebd8e-f636-489b-bc14-738239dbb7de |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:00:12Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:c44ebd8e-f636-489b-bc14-738239dbb7de2022-03-27T06:22:32ZX-ray QSO evolution from a very deep ROSAT surveyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c44ebd8e-f636-489b-bc14-738239dbb7deEnglishSymplectic Elements at Oxford1996Jones, LMcHardy, IMerrifield, MRMason, KSmith, PAbraham, RBranduardi-Raymont, GNewsam, ADalton, GRowan-Robinson, MLuppino, GIn 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 break to a flat slope at faint fluxes. The surface density of QSOs at the survey limit is 230+/-40 per square degree, the largest so far of any QSO survey. We have used this survey to measure the QSO X-ray luminosity function at low luminosities (Lx<10^{44.5} erg s^{-1}) and high redshifts (1 |
| spellingShingle | Jones, L McHardy, I Merrifield, MR Mason, K Smith, P Abraham, R Branduardi-Raymont, G Newsam, A Dalton, G Rowan-Robinson, M Luppino, G X-ray QSO evolution from a very deep ROSAT survey |
| title | X-ray QSO evolution from a very deep ROSAT survey |
| title_full | X-ray QSO evolution from a very deep ROSAT survey |
| title_fullStr | X-ray QSO evolution from a very deep ROSAT survey |
| title_full_unstemmed | X-ray QSO evolution from a very deep ROSAT survey |
| title_short | X-ray QSO evolution from a very deep ROSAT survey |
| title_sort | x ray qso evolution from a very deep rosat survey |
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