Demonstration of the spike phenomenon using the LTB models

被引：9
作者：
Coley, A. A. [1 ]
Lim, W. C. [2 ]
机构：
[1] Dalhousie Univ, Dept Math & Stat, Halifax, NS B3H 3J5, Canada
[2] Univ Waikato, Dept Math, Hamilton 3240, New Zealand
来源：
CLASSICAL AND QUANTUM GRAVITY | 2014年 / 31卷 / 11期
基金：
加拿大自然科学与工程研究理事会;
关键词：
spikes; Lemaitre-Tolman-Bondi; large-scale structure; SCALE; CHALLENGE; UNIVERSE;
D O I：
10.1088/0264-9381/31/11/115012
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We demonstrate the occurrence of permanent spikes using the Lemaitre-Tolman-Bondi models, chosen because the solutions are exact and can be analyzed by qualitative dynamical systems methods. Three examples are given and illustrated numerically. The third example demonstrates that spikes can form directly in the matter density, as opposed to indirectly in previous studies of spikes in the Kasner regime. Spikes provide an alternative general relativistic mechanism for generating exceptionally large structures observed in the Universe.
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页数：15
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