DSpace
 

RRI Digital Repository >
04. Astronomy and Astrophysics >
Research Papers (A&A) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2225

Title: Constraints on structure formation models from the Sunyaev-Zel'dovich effect
Authors: Majumdar, Subhabrata
Subrahmanyan, Ravi
Keywords: GALAXIES: CLUSTERS: GENERAL
COSMIC MICROWAVE BACKGROUND
COSMOLOGY: OBSERVATIONS
COSMOLOGY: THEORY
Issue Date: Mar-2000
Publisher: Blackwell Publishing for the Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, 2000, Vol.312, p724-732.
Abstract: In 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.
Description: Restricted Access. An open access version is available at NASA ADS (alternative location).
URI: http://hdl.handle.net/2289/2225
ISSN: 0035-8711
Alternative Location: http://adsabs.harvard.edu/cgi-bin/bib_query?2000MNRAS.312..724M
http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000MNRAS.312..724M&link_type=ARTICLE&db_key=AST
Copyright: (2000) Blackwell Publishing for the Royal Astronomical Society
Appears in Collections:Research Papers (A&A)

Files in This Item:

File Description SizeFormat
2000 MNRAS.312.P724.pdfRestricted Access319.72 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

    RRI Library DSpace