Matches in SemOpenAlex for { <https://semopenalex.org/work/W2040842008> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W2040842008 endingPage "L18" @default.
- W2040842008 startingPage "L15" @default.
- W2040842008 abstract "Previously, we have determined by direct detection that QSOs account for ≈30 percent of the X-ray background at 1 keV. There are indications, however, that QSOs do not produce the entire X-ray background. Using deep ROSAT PSPC observations in five fields where we also have deep optical imaging data, we perform optical spectroscopic follow-up investigation of faint ROSAT sources. By directly cross-correlating these X-ray sources with galaxies, we estimate that galaxies to B=21 mag form ∼5 per cent of the detected X-ray sources. We detect a highly significant (>5α) cross-correlation between B<23 mag galaxies observed on three AAT plates and the fluctuations in the unresolved 0.5-2.0 keV X-ray background on the deep ROSAT images. The amplitude of this cross-correlation appears to indicate that galaxies to B=23 mag produce 16.8±2.3 per cent of the unresolved X-ray background. Extrapolation of these results to higher redshifts would give a total contribution of faint galaxies to the X-ray background which is comparable to that of QSOs." @default.
- W2040842008 created "2016-06-24" @default.
- W2040842008 creator A5045684560 @default.
- W2040842008 creator A5049150471 @default.
- W2040842008 creator A5058520195 @default.
- W2040842008 creator A5066167545 @default.
- W2040842008 creator A5073454179 @default.
- W2040842008 creator A5079224064 @default.
- W2040842008 date "1995-03-01" @default.
- W2040842008 modified "2023-10-16" @default.
- W2040842008 title "A deep ROSAT survey - VII. A faint galaxy contribution to the X-ray background" @default.
- W2040842008 doi "https://doi.org/10.1093/mnras/273.1.l15" @default.
- W2040842008 hasPublicationYear "1995" @default.
- W2040842008 type Work @default.
- W2040842008 sameAs 2040842008 @default.
- W2040842008 citedByCount "21" @default.
- W2040842008 countsByYear W20408420082013 @default.
- W2040842008 crossrefType "journal-article" @default.
- W2040842008 hasAuthorship W2040842008A5045684560 @default.
- W2040842008 hasAuthorship W2040842008A5049150471 @default.
- W2040842008 hasAuthorship W2040842008A5058520195 @default.
- W2040842008 hasAuthorship W2040842008A5066167545 @default.
- W2040842008 hasAuthorship W2040842008A5073454179 @default.
- W2040842008 hasAuthorship W2040842008A5079224064 @default.
- W2040842008 hasBestOaLocation W20408420081 @default.
- W2040842008 hasConcept C120665830 @default.
- W2040842008 hasConcept C121332964 @default.
- W2040842008 hasConcept C1276947 @default.
- W2040842008 hasConcept C132459708 @default.
- W2040842008 hasConcept C134306372 @default.
- W2040842008 hasConcept C2776968204 @default.
- W2040842008 hasConcept C2779328170 @default.
- W2040842008 hasConcept C33024259 @default.
- W2040842008 hasConcept C33923547 @default.
- W2040842008 hasConcept C44870925 @default.
- W2040842008 hasConcept C75776270 @default.
- W2040842008 hasConcept C98444146 @default.
- W2040842008 hasConceptScore W2040842008C120665830 @default.
- W2040842008 hasConceptScore W2040842008C121332964 @default.
- W2040842008 hasConceptScore W2040842008C1276947 @default.
- W2040842008 hasConceptScore W2040842008C132459708 @default.
- W2040842008 hasConceptScore W2040842008C134306372 @default.
- W2040842008 hasConceptScore W2040842008C2776968204 @default.
- W2040842008 hasConceptScore W2040842008C2779328170 @default.
- W2040842008 hasConceptScore W2040842008C33024259 @default.
- W2040842008 hasConceptScore W2040842008C33923547 @default.
- W2040842008 hasConceptScore W2040842008C44870925 @default.
- W2040842008 hasConceptScore W2040842008C75776270 @default.
- W2040842008 hasConceptScore W2040842008C98444146 @default.
- W2040842008 hasIssue "1" @default.
- W2040842008 hasLocation W20408420081 @default.
- W2040842008 hasOpenAccess W2040842008 @default.
- W2040842008 hasPrimaryLocation W20408420081 @default.
- W2040842008 hasRelatedWork W1526830356 @default.
- W2040842008 hasRelatedWork W2037983614 @default.
- W2040842008 hasRelatedWork W2039003052 @default.
- W2040842008 hasRelatedWork W2060259663 @default.
- W2040842008 hasRelatedWork W2172172874 @default.
- W2040842008 hasRelatedWork W2283233685 @default.
- W2040842008 hasRelatedWork W2609401563 @default.
- W2040842008 hasRelatedWork W3021701531 @default.
- W2040842008 hasRelatedWork W3100619163 @default.
- W2040842008 hasRelatedWork W3137183839 @default.
- W2040842008 hasVolume "273" @default.
- W2040842008 isParatext "false" @default.
- W2040842008 isRetracted "false" @default.
- W2040842008 magId "2040842008" @default.
- W2040842008 workType "article" @default.