A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes | Zendy

E. Torbet | Zendy; Michelle Devlin | Zendy; W. B. Dorwart | Zendy; T. Herbig | Zendy; A. Miller | Zendy; M. R. Nolta | Zendy; Lyman A. Page | Zendy; Jason Puchalla | Zendy; H. T. Tran | Zendy

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A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes

Author(s) -

E. Torbet,

Michelle Devlin,

W. B. Dorwart,

T. Herbig,

A. Miller,

M. R. Nolta,

Lyman A. Page,

Jason Puchalla,

H. T. Tran

Publication year - 1999

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/312197

Subject(s) - cosmic microwave background , sky , anisotropy , telescope , microwave , physics , astrophysics , spectral density , spectrum (functional analysis) , radio spectrum , astronomy , geology , optics , telecommunications , engineering , quantum mechanics

We report on a measurement of the angular spectrum of the anisotropy of themicrowave sky at 30 and 40 GHz between l=50 and l=200 over approximately 600sq. deg. The data support a rise in the angular spectrum to a maximum with$\delta T_l \approx 85 \mu$K at l=200. We also give a 2-sigma upper limit of$\delta T_l < 122 \mu$K at l=432 at 144 GHz. These results come from the firstcampaign of the Mobile Anisotropy Telescope (MAT) on Cerro Toco, Chile. Toassist in assessing the site, we present plots of the fluctuations inatmospheric emission at 30 and 144 GHz.

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