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.
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页数：54
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