CMB interferometry
Abstract
Interferometry has been a very successful tool for measuring anisotropies in the cosmic microwave background. Interferometers provided the first constraints on CMB anisotropies on small angular scales (l~10000) in the 1980s and then in the late 1990s and early 2000s made ground-breaking measurements of the CMB power spectrum at intermediate and small angular scales covering the l-range ~100-4000. In 2002 the DASI made the first detection of CMB polarization which remains a major goal for current and future CMB experiments. Interferometers have also made major contributions to the detection and surveying of the Sunyaev-Zel'dovich (SZ) effect in galaxy clusters. In this short review I cover the key aspects that made interferometry well-suited to CMB measurements and summarise some of the central observations that have been made. I look to the future and in particular to HI intensity mapping at high redshifts that could make use of the advantages of interferometry.
Cite
@article{arxiv.1212.1729,
title = {CMB interferometry},
author = {Clive Dickinson},
journal= {arXiv preprint arXiv:1212.1729},
year = {2012}
}
Comments
8 pages, 2 tables. Accepted in Proceedings of Science (PoS) as part of conference: Resolving the Sky - Radio Interferometry: Past, Present andFuture - RTS2012, April 17-20, 2012, Manchester, UK