Journal Article

The observability of topological defects with ground-based interferometers

Klaus Maisinger, M. P. Hobson, A. N. Lasenby and Neil Turok

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 297, issue 2, pages 531-535
Published in print June 1998 | ISSN: 0035-8711
Published online June 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1046/j.1365-8711.1998.01517.x
The observability of topological defects with ground-based interferometers

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Topological defect theories lead to non-Gaussian features on maps of fluctuations of the cosmic microwave background radiation (CMBR), which enable us to distinguish them from maps predicted by standard inflationary models. We have recently presented a maximum entropy method (MEM) which simultaneously deconvolves interferometer maps of CMBR fluctuations, and separates out foreground contaminants. By applying this method to simulated observations using a realistic ground-based interferometer, we demonstrate that it is possible to recover the prominent hotspots in the CMBR maps which delineate individual defects, even in the presence of a significant Galactic foreground.

Keywords: methods: data analysis; techniques: image processing; cosmic microwave background

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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