The observability of topological defects with ground-based interferometers

Details The observability of topological defects with ground-based interferometers The observability of topological defects with ground-based interferometers

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.297..531m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 297, Issue 2, pp. 531-535.

Astronomy and Astrophysics

Astronomy

2

Methods: Data Analysis, Techniques: Image Processing, Cosmic Microwave Background

Scientific paper

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.

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