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Sunyaev-Zeldovich observations: Ryle results
and blind surveys with AMI
R.D.E. Saunders and M.E. Jones
Cavendish Astrophysics, University of Cambridge, U.K.
We discuss the S-Z results from the Ryle Telescope, including
those from systems at high redshift. We also discuss the com-
bining of S-Z and X-ray data, and the implications for determi-
nation of the Hubble constant and cluster physics. We describe
our plans for the Arcminute MicroKelvin Imager (AMI): an in-
strument planned to make a deep survey of the microwave sky at
high angular resolution. One key product of such a survey would
be a catalogue of galaxy clusters selected by mass with almost
no bias due to distance. The number counts of these clusters
are strongly dependent on the underlying cosmology, and with
optical and X-ray follow up would allow for the measurement of
several key cosmological parameters. AMI will also be used to
make detailed images of moderate-redshift clusters, and to search
for reionization-era eects, as well as topological defects.
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