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28 March 2024 |
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Imaging the Sunyaev-Zel'dovich Effect | J.E. Carlstrom
; M.K. Joy
; L. Grego
; G.P. Holder
; W.L. Holzapfel
; J.J. Mohr
; S. Patel
; E.D. Reese
; | Date: |
20 May 1999 | Subject: | astro-ph | Affiliation: | U Chicago), M.K. Joy (NASA/MSFC), L. Grego (SAO), G.P. Holder (U Chicago), W.L. Holzapfel (UC Berkeley), J.J. Mohr (U Chicago), S. Patel (U Alabama), E.D. Reese (U Chicago | Abstract: | We report on results of interferometric imaging of the Sunyaev-Zel’dovich Effect (SZE) with the OVRO and BIMA mm-arrays. Using low-noise cm-wave receivers on the arrays, we have obtained high quality images for 27 distant galaxy clusters. We review the use of the SZE as a cosmological tool. Gas mass fractions derived from the SZE data are given for 18 of the clusters, as well as the implied constraint on the matter density of the universe, $Omega_M$. We find $Omega_M h_{100} le 0.22 ^{+0.05}_{-0.03}$. A best guess for the matter density obtained by assuming a reasonable value for the Hubble constant and also by attempting to account for the baryons contained in the galaxies as well as those lost during the cluster formation process gives $Omega_M sim 0.25$. We also give preliminary results for the Hubble constant. Lastly, the power for investigating the high redshift universe with a non-targeted high sensitivity SZE survey is discussed and an interferometric survey is proposed. | Source: | arXiv, astro-ph/9905255 | Services: | Forum | Review | PDF | Favorites |
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