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Simultaneous determination of $Ω_{\rm M0}$ and $H_0$ from joint Sunyaev-Zeldovich effect and X-ray observations with median statistics

M. Sereno
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Abstract

Clusters of galaxies contain a fair sample of the universal baryonic mass fraction. A combined analysis of the intracluster medium (ICM) within their hydrostatic regions, as derived from both Sunyaev-Zeldovich effect (SZE) measurements and X-ray images, makes it possible to constrain the cosmological parameters. We consider both gas fraction estimates and angular diameter distance measurements. Adopting median statistics, we find, at the 2-$σ$ level, the pressureless matter density, $Ω_{\rm M0}$, to be between 0.30 and 0.40 and the Hubble constant, $H_0$, between 44 and 66 Km s$^{-1}$ Mpc$^{-1}$.

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M. Sereno. 2003-09-22. Simultaneous determination of $Ω_{\rm M0}$ and $H_0$ from joint Sunyaev-Zeldovich effect and X-ray observations with median statistics. https://doi.org/10.1051/0004-6361%3A20031465

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