Proceedings of the Particle Physics and Early Universe Conference (PPEUC).
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CL 0016+16 and the Hubble constant

M. Birkinshaw

Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, U.K.

J.P. Hughes

Department of Physics & Astronomy, Rutgers University, PO Box 849, Piscataway, NJ 08855-0849, U.S.A.


Rich cluster CL 0016+16 lies in a large-scale dynamical structure at redshift , and has a strong Sunyaev-Zel'dovich effect. When the X-ray and radio data for CL 0016+16 are interpreted in terms of the cluster distance, this cluster provides the highest redshift datum on the Hubble diagram based on the Sunyaev-Zel'dovich effect, with a Hubble constant of . There is significant model-dependence in this estimate. Systematic effects presently limit the accuracy with which can be deduced from the Hubble diagram, but it appears that .

PPEUC Proceedings
Thu Jun 19 14:07:57 BST 1997