Journal Article

10-GHz Tenerife cosmic microwave background observations at 8° resolution and their analysis using a new maximum entropy method

A. W. Jones, S. Hancock, A. S. Lasenby, R. D. Davies, C. M. Gutiérrez, G. Rocha, R. A. Watson and R. Rebolo

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 294, issue 4, pages 582-594
Published in print March 1998 | ISSN: 0035-8711
Published online March 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-8711.1998.01139.x
10-GHz Tenerife cosmic microwave background observations at 8° resolution and their analysis using a new maximum entropy method

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Abstract

The complete set of data from the Tenerife 10-GHz (8° FWHM) twin-horn, drift scan experiment is described. These data are affected by both long-term atmospheric baseline drifts and short-term noise. A new maximum entropy procedure, utilizing the time invariance and spatial continuity of the astronomical signal, is used to achieve a clean separation of these effects from the astronomical signal, and to deconvolve the effects of the beam-switching. We use a fully positive/negative algorithm to produce two-dimensional maps of the intrinsic sky fluctuations. Known discrete sources and Galactic features are identified in the deconvolved map. The data from the 10-GHz experiment, after baseline subtraction with MEM, are then analysed using conventional techniques, and new constraints on Galactic emission are made.

Keywords: methods: data analysis; Galaxy: general; cosmic microwave background

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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