Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3066
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dc.contributor.authorMajumdar, S-
dc.contributor.authorSubrahmanyan, R-
dc.date.accessioned2008-08-12T08:51:47Z-
dc.date.available2008-08-12T08:51:47Z-
dc.date.issued2000-03-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, Vol. 312, No. 4, pp. 724 - 732en
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/2248/3066-
dc.description.abstractIn the context of cold dark matter (CDM) cosmological models, we have simulated images of the brightness temperature fluctuations in the cosmic microwave background (CMB) sky owing to the Sunyaev–Zel'dovich (S–Z) effect in a cosmological distribution of clusters. We compare the image statistics with recent ATCA limits on arcmin-scale CMB anisotropy. The S–Z effect produces a generically non-Gaussian field and we compute the variance in the simulated temperature-anisotropy images, after convolution with the ATCA beam pattern, for different cosmological models. All the models are normalized to the 4-yr COBE data. We find an increase in the simulated-sky temperature variance with increase in the cosmological density parameter Ω0. A comparison with the upper limits on the sky variance set by the ATCA appears to rule out our closed-universe model: low-Ω0 open-universe models are preferred. The result is independent of any present day observations of σ8.en
dc.format.extent452575 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherRoyal Astronomical Societyen
dc.relation.urihttp://adsabs.harvard.edu/abs/2000MNRAS.312..724Men
dc.relation.urihttp://www3.interscience.wiley.com/cgi-bin/fulltext/119006614/HTMLSTARTen
dc.subjectGalaxies: clustersen
dc.subjectCosmic microwave backgrounden
dc.subjectCosmology: observationsen
dc.subjectCosmology: theoryen
dc.titleConstraints on structure formation models from the Sunyaev-Zel'dovich effecten
dc.typeArticleen
Appears in Collections:IIAP Publications

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