Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-02-27
Astronomy and Astrophysics
Astrophysics
To be published in ApJ (main journal)
Scientific paper
10.1086/309119
We limit the contribution of the hot intracluster gas, by means of the Sunyaev-Zel'dovich effect, to the temperature anisotropies measured by the Tenerife experiment. The data is cross-correlated with maps generated from the ACO cluster catalogue, the ROSAT PSPC catalogue of clusters of galaxies, a catalogue of superclusters and the HEAO 1 A-1 map of X-ray sources. There is no evidence of contamination by such sources at an rms level of $\sim 8\mu$K at 99% confidence level at $5^o$ angular resolution. We place an upper limit on the mean Comptonization parameter of $ y \le 1.5\times 10^{-6}$ at the same level of confidence. These limits are slightly more restrictive than those previously found by a similar analysis on the COBE/DMR data and indicate that most of the signal measured by Tenerife is cosmological.
Atrio-Barandela Fernando
Hernández-Monteagudo Carlos
Rubiño-Martín Jose Alberto
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