The 4 year COBE normalization and large-scale structure

被引：403

作者：

Bunn, EF ^{[1
]}

White, M ^{[1
]}

机构：

[1] UNIV CHICAGO, ENRICO FERMI INST, CHICAGO, IL 60637 USA

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 480卷 / 01期

关键词：

cosmic microwave background; cosmology; theory; large-scale structure of universe; methods; statistical;

D O I：

10.1086/303955

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analysis of the 4 year data from the COBE DMR experiment. We use a Karhunen-Loeve expansion of the pixel data to calculate the normalization and goodness of fit of a range of models of structure formation. This technique produces unbiased normalization estimates and is capable of determining the normalization of any particular model with a statistical uncertainty of 7%. We present a parameterization of the normalization and likelihood function which summarizes our results for a wide range of models. We use the COBE normalization to compute small-scale fluctuation amplitudes for a variety of models and discuss the implications of these results for theories of large-scale structure.

引用

页码：6 / 21

页数：16

共 70 条

[1] LARGE-SCALE ANISOTROPY OF THE MICROWAVE BACKGROUND AND THE AMPLITUDE OF ENERGY DENSITY-FLUCTUATIONS IN THE EARLY UNIVERSE [J].