10-GHZ TENERIFE COSMIC MICROWAVE BACKGROUND OBSERVATIONS AT 8-DEGREESRESOLUTION AND THEIR ANALYSIS USING A NEW MAXIMUM-ENTROPY METHOD

Citation
Aw. Jones et al., 10-GHZ TENERIFE COSMIC MICROWAVE BACKGROUND OBSERVATIONS AT 8-DEGREESRESOLUTION AND THEIR ANALYSIS USING A NEW MAXIMUM-ENTROPY METHOD, Monthly Notices of the Royal Astronomical Society, 294(4), 1998, pp. 582-594
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
00358711
Volume
294
Issue
4
Year of publication
1998
Pages
582 - 594
Database
ISI
SICI code
0035-8711(1998)294:4<582:1TCMBO>2.0.ZU;2-Q
Abstract
The complete set of data from the Tenerife 10-GHz (8 degrees FWHM) twi n-horn, drift scan experiment is described, These data are affected by both long-term atmospheric baseline drifts and short-term noise, A ne w maximum entropy procedure, utilizing the time invariance and spatial continuity of the astronomical signal, is used to achieve a clean sep aration of these effects from the astronomical signal, and to deconvol ve the effects of the beam-switching. We use a fully positive/negative algorithm to produce two-dimensional maps of the intrinsic sky fluctu ations, Known discrete sources and Galactic features are identified in the deconvolved map. The data from the 10-GHz experiment, after basel ine subtraction with MEM are then analysed using conventional techniqu es. and new constraints on Galactic emission are made.