High‐Resolution Observations of the Cosmic Microwave Background Power Spectrum with ACBAR | Zendy

C. L. Kuo | Zendy; P. A. R. Ade | Zendy; J. J. Bock | Zendy; C. Cantalupo | Zendy; M. D. Daub | Zendy; J. Goldstein | Zendy; W. L. Holzapfel | Zendy; A. E. Lange | Zendy; M. Lueker | Zendy; M. Newcomb | Zendy; J. B. Peterson | Zendy; J. E. Ruhl | Zendy; M. C. Runyan | Zendy; E. Torbet | Zendy

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High‐Resolution Observations of the Cosmic Microwave Background Power Spectrum with ACBAR

Author(s) -

C. L. Kuo,

P. A. R. Ade,

J. J. Bock,

C. Cantalupo,

M. D. Daub,

J. Goldstein,

W. L. Holzapfel,

A. E. Lange,

M. Lueker,

M. Newcomb,

J. B. Peterson,

J. E. Ruhl,

M. C. Runyan,

E. Torbet

Publication year - 2004

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 - 10.1086/379783

Subject(s) - cosmic microwave background , physics , astrophysics , anisotropy , sky , bolometer , spectral density , telescope , astronomy , optics , detector , statistics , mathematics

We report the first measurements of anisotropy in the cosmic microwavebackground (CMB) radiation with the Arcminute Cosmology Bolometer ArrayReceiver (ACBAR). The instrument was installed on the 2.1m Viper telescope atthe South Pole in January 2001; the data presented here are the product ofobservations up to and including July 2002. The two deep fields presented here,have had offsets removed by subtracting lead and trail observations and coverapproximately 24 deg^2 of sky selected for low dust contrast. These resultsrepresent the highest signal to noise observations of CMB anisotropy to date;in the deepest 150GHz band map, we reached an RMS of 8.0\mu K per 5' beam. The3 degree extent of the maps, and small beamsize of the experiment allow themeasurement of the CMB anisotropy power spectrum over the range \ell = 150-3000with resolution of \Delta \ell=150. The contributions of galactic dust andradio sources to the observed anisotropy are negligible and are removed in theanalysis. The resulting power spectrum is found to be consistent with theprimary anisotropy expected in a concordance \Lambda CDM Universe.Comment: 21 pages, Ap

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