Holes in the Microwave Sky
J. G. Bartlett, A. Blanchard, D. Barbosa, J. Oukbir
Abstract
We discuss the implications of two possible, recent Sunyaev-Zel'dovich (SZ) detections for which no optical or X--ray counterparts have been found. This suggests that the objects reside at high redshift, which is difficult to reconcile with a critical cosmology. We develop this argument and find that an open model with =0.2 remains consistent with what we currently know about the two objects. The reasoning also demonstrates the utility of SZ cluster searches.
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