A SEARCH FOR SMALL-SCALE ANISOTROPY IN THE COSMIC MICROWAVE BACKGROUND

被引：49

作者：

TUCKER, GS ^{[1
]}

GRIFFIN, GS ^{[1
]}

NGUYEN, HT ^{[1
]}

PETERSON, JB ^{[1
]}

机构：

[1] PRINCETON UNIV,JOSEPH HENRY LABS,PRINCETON,NJ 08544

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 419卷 / 02期

关键词：

COSMIC MICROWAVE BACKGROUND; COSMOLOGY; OBSERVATIONS;

D O I：

10.1086/187133

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the preliminary result of a search for cosmic microwave background (CMB) anisotropy. We made observations using a specially designed radiometer and on-axis Cassegrain telescope. The beam size was 12' at a frequency of 90 GHz. Observations were made during 1993 January from the South Pole. We observed five regions of sky rear declination -75-degrees, and set a 95% confidence level upper limit of DELTAT < 2.3 x 10(-5)T(CMB) on Gaussian-correlated CMB anisotropy at an angular scale of 0.15-degrees. This is the lowest upper limit to date on CMB anisotropy at this angular scale.

引用

页码：L45 / L48

页数：4

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