Asymptotic behavior of a planar perturbation in a three dimensional expanding Universe

被引:21
作者
Fanelli, D [1 ]
Aurell, E
机构
[1] KTH, Dept Numer Anal & Comp Sci, S-10044 Stockholm, Sweden
[2] SICS, S-16429 Kista, Sweden
[3] NORDITA, DK-2100 Copenhagen, Denmark
关键词
cosmology : theory; large-scale structure of Universe;
D O I
10.1051/0004-6361:20021197
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The non-linear evolution of a planar perturbation in a three dimensional expanding Universe is considered. A general Lagrangian scheme (Q model) is introduced and numerical investigations are performed. The asymptotic contraction of the core of the agglomeration is studied. A power-law scaling is detected and an heuristic interpretation of the numerical findings is provided. An asymptotic equation for the multi-stream velocity flow is derived and it is shown to agree quantitatively with the dynamics of the Q model. The relation to the adhesion model is discussed.
引用
收藏
页码:399 / 408
页数:10
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