Cosmic-string-seeded structure formation

被引：46
作者：
Avelino, PP
Shellard, EPS
Wu, JHP
Allen, B
机构：
[1] Univ Porto, Ctr Astrofis, P-4150 Porto, Portugal
[2] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 9EW, England
[3] Univ Wisconsin, Milwaukee, WI 53201 USA
来源：
PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.81.2008
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We describe the results of high-resolution numerical simulations of string-induced structure formation in open universes and those with a nonzero cosmological constant. For models with Gamma = Omega h = 0.1-0.2 and a cold dark matter background, we show that the linear density fluctuation power spectrum has both an amplitude at 8h(-1) Mpc, sigma(8), and an overall shape which are consistent within uncertainties with those currently inferred from galaxy surveys. The cosmic string scenario with hot dark matter requires a strongly scale-dependent bias in order to agree with observations.
引用
收藏
页码：2008 / 2011
页数：4
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