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Prog. Theor. Phys. Vol. 111 No. 1 (2004) pp. 1-12

[ Full Text PDF : FREE ACCESS (165K) ]

Cluster Abundance Evolution and the Sunyaev-Zeldovich Effect in Various Cosmological Models

Kenji Tomita*

Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan

(Received June 1, 2003)

Abstract:

The redshift dependence of the observed cluster abundance due to the Sunyaev-Zeldovich effect (SZE) is studied in various cosmological models, including flat and open homogeneous (CDM) models and an inhomogeneous model with a large-scale local void. The Press-Schechter formalism is used to derive the abundance at epochs in the range 0 < z < 2, and the cluster mass limit M lim is obtained from a flux limit for SZE. It is shown that SZE is useful for constraining the cosmological model parameters, and the abundance in the inhomogeneous model may be comparable with that in the low-density homogeneous models. The significance of relative difference of abundances in the various models is discussed.


URL : http://ptp.ipap.jp/link?PTP/111/1/
DOI : 10.1143/PTP.111.1


*E-mail: tomita@yukawa.kyoto-u.ac.jp

[ Full Text PDF : FREE ACCESS (165K) ] Citation:


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