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 \Omo=0.2 remains consistent with what we currently know about the two objects. The reasoning also demonstrates the utility of SZ cluster searches.
Cite
@article{arxiv.astro-ph/9707059,
title = {Holes in the Microwave Sky},
author = {J. G. Bartlett and A. Blanchard and D. Barbosa and J. Oukbir},
journal= {arXiv preprint arXiv:astro-ph/9707059},
year = {2007}
}
Comments
Proceedings of the PPEUC conference held in Cambridge, UK, April 7-11, 1997