The Sunyaev-Zel'Dovich Effect and H0

Abstract

Observational data on the Sunyaev-Zel'dovich effect for three clusters are used to obtain limits to the value of the Hubble constant. Only a wide bound on the value of H0, 10 km s−1 Mpc−1 < H0 < 160 km s−1 Mpc−1, can be derived, mostly because of the large uncertainty in the measured temperature of the intracluster medium in each cluster. Better information on this temperature and on the distribution of the intracluster medium are needed for this method to yield a good measurement of H0.