Showing papers by "Anthony Lasenby published in 1991"

Observations of Microwave Background Anisotropy at Tenerife and Cambridge

Abstract: A brief summary of the status of microwave background anisotropy observations at Tenerife and Cambridge is given. New 15 GHz Tenerife results give a preliminary limit of ΔT/T ≲ 2.5 x 10-5 on an angular scale of 4°. The features reported previously at 10 GHz appear to have a galactic spectrum, and can be predicted, though only approximately, from lower frequency sky surveys. At Cambridge, the newly completed Ryle Telescope is making its first observations of clusters of galaxies in order to measure the Sunyaev-Zel’dovich effect, and a dedicated interferometer to detect primordial perturbations is under construction.