A SEARCH FOR ANISOTROPY IN THE COSMIC MICROWAVE-RADIATION AT MEDIUM ANGULAR SCALES

被引：23

作者：

TIMBIE, PT ^{[1
]}

WILKINSON, DT ^{[1
]}

机构：

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

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 353卷 / 01期

关键词：

Cosmic background radiation;

D O I：

10.1086/168599

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the results from a search for anisotropy in the cosmic microwave radiation (CMR) at angular scales 0°.5 to 5°. No temperature fluctuations are detected; however, the data place limits on intrinsic CMR anisotropy. We express the limits in terms of two models which describe the temperature fluctuations. For models specified by a Gaussian-shaped correlation function the fluctuation amplitude is found to be ΔTrms/T ≤ 1.1 × 10-4 at 1°.1; for models with monochromatic fluctuations ΔTrms/T ≤ 7.5 × 10-5 at 1°.7. These limits satisfy the likelihood ratio test at the 95% confidence level. The implications of the results for largescale structure formation scenarios are discussed.

引用

页码：140 / 144

页数：5

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