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

Preprint

9 May 1999

preprint
Published by arXiv in arXiv

Abstract

We report on a measurement of the angular spectrum of the anisotropy of the microwave sky at 30 and 40 GHz between l=50 and l=200 over approximately 600 sq. 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 first campaign of the Mobile Anisotropy Telescope (MAT) on Cerro Toco, Chile. To assist in assessing the site, we present plots of the fluctuations in atmospheric emission at 30 and 144 GHz.

Keywords

MICROWAVE BACKGROUND
BACKGROUND MADE
POWER SPECTRUM
ANGULAR POWER
ANISOTROPY
DELTA T_L
SPECTRUM
CHILE
T_L

All Related Versions

Version 1, 1999-05-09, ArXiv
Version 2, 1999-05-14, ArXiv
Version 3, 1999-06-10, ArXiv
Published version: The Astrophysical Journal, 521 (2), L79.

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