A critical-density closed universe in Brans-Dicke theory

被引：5

作者：

del Campo, S

Cruz, N

机构：

[1] Pontificia Univ Catolica Valparaiso, Inst Fis, Valparaiso, Chile

[2] Univ Santiago, Dept Fis, Santiago, Chile

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2000年 / 317卷 / 04期

关键词：

galaxies : distances and redshifts; cosmology : theory;

D O I：

10.1046/j.1365-8711.2000.03675.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a Brans-Dicke (BD) cosmological model, the energy density associated with some scalar field decreases as a(-2[(omega 0+1/2)/(omega 0+1)]) with the scalefactor a(t) of the universe, giving matter with an equation of state p = -(1/3) [(2 + omega(0))(1 + omega(0))]rho. In this model, the universe could be closed but still have a non-relativistic matter density corresponding to its critical value, Ohm(0) = 1. Different cosmological expressions, such as luminosity distance, angular diameter, number count and ratio of the redshift thickness-angular size, are determined in terms of the redshift for this model.

引用

收藏

页码：825 / 830

页数：6

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