A measurement of the angular power spectrum of the microwave background made from the high Chilean Andes

Authors
Torbet, E Devlin, MJ Dorwart, WB Herbig, T Miller, AD Nolta, MR Page, L Puchalla, J Tran, HT
Citation
E. Torbet et al., A measurement of the angular power spectrum of the microwave background made from the high Chilean Andes, ASTROPHYS J, 521(2), 1999, pp. L79-L82
Citations number
18
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
521
Issue
2
Year of publication
1999
Part
2
Pages
L79 - L82
Database
ISI
SICI code
0004-637X(19990820)521:2<L79:AMOTAP>2.0.ZU;2-O
Abstract
We report on a measurement of the angular spectrum of the anisotropy of the microwave sky at 30 and 40 GHz between I = 50 and l = 200. The data, cover ing roughly 600 deg(2), support a rise in the angular spectrum to a maximum with delta T-l approximate to 85 mu K at l = 200. We also give a 2 sigma u pper limit of delta T-l < 122 mu K at l = 432 at 144 GHz. These results com e from the first campaign of the Mobile Anisotropy Telescope on Cerro Toco, Chile. To assist in assessing the site, we present plots of the fluctuatio ns in atmospheric emission at 30 and 144 GHz.