A local void and the accelerating Universe

被引：154

作者：

Tomita, K ^{[1
]}

机构：

[1] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2001年 / 326卷 / 01期

关键词：

cosmology : observations; large-scale structure of Universe;

D O I：

10.1046/j.1365-8711.2001.04597.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Corresponding to the recent observational claims that we are in a local void (an underdense region) on scales of 200-300 Mpc, the magnitude-redshift relation in a cosmological model with a local void is investigated. It is already evident that the accelerating behaviour of high-z supernovae can be explained in this model, because the local void plays a role similar to the positive cosmological constant. In this paper the dependence of the behaviour on the gaps of cosmological parameters in the inner (low-density) region and the outer (high-density) region, the radius of the local void, and the clumpiness parameter is studied and its implications are discussed.

引用

页码：287 / 292

页数：6

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