Non-linear structure formation and 'apparent' acceleration: an investigation

被引：67

作者：

Biswas, Tirthabir ^{[1
]}

Mansouri, Reza ^{[1
,2
,3
]}

Notari, Alessio ^{[1
]}

机构：

[1] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[2] Sharif Univ Technol, Dept Phys, Tehran 113659161, Iran

[3] Inst Studies Theoret Phys & Math, Tehran, Iran

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2007年 / 12期

关键词：

dark energy theory; superclusters and voids;

D O I：

10.1088/1475-7516/2007/12/017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analytically tractable non-linear model of structure formation in a Universe with only dust. The model is a Lema (i) over cap tre-Tolman-Bondi solution (of general relativity) and structures are shells of different density. We show that the luminosity distance-redshift relation has significant corrections at low redshift when the density contrast becomes non-linear. A minimal effect is a correction in apparent magnitudes of order Delta m similar or equal to 0.15. We discuss different possibilities that could further enhance this effect and mimic dark energy.

引用

页数：54

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