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• W2075436570 abstract "We discuss how the space of possible cosmological parameters is constrained by the angular diameter distance function, DA(z), as measured using the SZ/X-ray method which combines Sunyaev-Zel’dovich (SZ) effect and X-ray brightness data for clusters of galaxies. New X-ray satellites, and ground-based interferometers dedicated to SZ observations, should soon lead to DA(z) measurements limited by systematic rather than random error. We analyze the systematic and random error budgets to make a realistic estimate of the accuracy achievable in the determination of (m,�, h), the density parameters of matter and cosmological constant, and the dimensionless Hubble constant, using DA(z) derived from the SZ/X-ray method, and the position of the first “Doppler” peak in the cosmic microwave background fluctuations. We briefly study the effect of systematic errors. We find that m, �, and w are affected, but h is not by systematic errors which grow with redshift. With as few as 70 clusters, each providing a measurement of DA(z) with a 7% random and 5% systematic error, m can be constrained to ±0.2, � to ±0.2, and h to ±0.11 (all at 3σ). We also estimate constraints for the alternative three-parameter set (m, w, h), where w is the equation of state parameter. The measurement of DA(z) provides constraints complementary to those from the number density of clusters in redshift space. A sample of 70 clusters (DA measured with the same accuracy as before) combined with cluster evolution results (or a known matter density), can constrain w within ±0.45 (at 3σ). Studies of X-ray and SZ properties of clusters of galaxies promise an independent and powerful test for cosmological parameters." @default.
• W2075436570 created "2016-06-24" @default.
• W2075436570 creator A5002771039 @default.
• W2075436570 creator A5068947308 @default.
• W2075436570 creator A5090766543 @default.
• W2075436570 date "2002-05-01" @default.
• W2075436570 modified "2023-09-27" @default.
• W2075436570 title "Constraints in Cosmological Parameter Space from the Sunyaev‐Zeldovich Effect and Thermal Bremsstrahlung" @default.
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• W2075436570 doi "https://doi.org/10.1086/339568" @default.
• W2075436570 hasPublicationYear "2002" @default.
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• W2075436570 hasAuthorship W2075436570A5090766543 @default.

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