With this corrected, Hancock et al. Data from the switched-beam Tenerife systems has now been taken at several further declinations. Results from a strip at Dec. have been reported by Gutierrez et al. The Sunyaev-Zel'dovich effect is the scattering of CMB photons to higher energies as they interact with the hot gas in galaxy clusters. A determination of the Hubble constant based on these data using an ellipsoidal model for the gas distribution gives , in excellent agreement with our previous result of from the cluster A2218.
Dotted contours are negative.
Such an object is highly unusual in standard hierarchical structure-formation models. The alternative explanation is that it is a similarly massive cluster containing the quasars, at , which is even more difficult for these theories. The contour interval is . Deep K-band mosaic of the same field. There is no evidence of a rich cluster, indicating that it must lie at a redshift .