Other
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.2302u&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #23.02; Bulletin of the American Astronomical Society, Vol. 34, p.1142
Other
Scientific paper
We present results from the Cosmic Background Imager's program to measure H0 with 10% accuracy through observations of the Sunyaev-Zeldovich Effect in a complete sample of nearby (z<0.1) clusters. We describe our sample selection and discuss the advantages and disadvantages of studying low-z clusters over those at higher z. The results we present here utilize density models and isothermal temperatures from ROSAT, ASCA, and BeppoSAX observations. We discuss possible errors from assuming isothermal cluster gas, and we show how accurate temperature profiles from current X-ray missions can improve the H0 measurements. We also quantify other sources of error such as observational noise, CMB primary anisotropy fluctuations, radio point sources, and cluster asphericity.
Mason Brian S.
Readhead Anthony C. S.
Udomprasert Patricia S.
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