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

被引：89

作者：

Torbet, E

Devlin, MJ

Dorwart, WB

Herbig, T

Miller, AD

Nolta, MR

Page, L

Puchalla, J

Tran, HT

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] Univ Penn, Dept Phys & Astron, David Rittenhouse Lab, Philadelphia, PA 19104 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 521卷 / 02期

基金：

美国国家科学基金会;

关键词：

atmospheric effects; cosmic microwave background; cosmology : observations;

D O I：

10.1086/312197

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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, covering 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 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 on Cerro Toco, Chile. To assist in assessing the site, we present plots of the fluctuations in atmospheric emission at 30 and 144 GHz.

引用

页码：L79 / L82

页数：4

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