CONSTRAINTS ON THE THERMAL HISTORY OF THE UNIVERSE FROM THE COSMIC MICROWAVE BACKGROUND SPECTRUM

被引：36

作者：

BURIGANA, C ^{[1
]}

DEZOTTI, G ^{[1
]}

DANESE, L ^{[1
]}

机构：

[1] OSSERV ASTRON PADOVA,I-35122 PADUA,ITALY

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 379卷 / 01期

关键词：

COSMIC BACKGROUND RADIATION; COSMOLOGY;

D O I：

10.1086/170479

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have carried out an extensive numerical analysis of distortions of microwave background spectrum that can arise over a broad interval of cosmic times. The range of validity of existing analytic approximation formulae, holding for large and very small values of the Comptonization parameter y, has been assessed and the shape of distortions that can arise for intermediate values of y has been determined. From a comparison with existing spectral data we have derived upper limits to the amount of energy that could have been dissipated at each cosmic time. The effectiveness of future measurements in tightening such constraints is discussed.

引用

页码：1 / 5

页数：5

共 23 条

[1] PRIMORDIAL DENSITY-FLUCTUATIONS AND THE MICROWAVE BACKGROUND SPECTRUM [J].