Are Chaplygin gases serious contenders for the dark energy?: art. no. 023515

被引：190
|
作者：
Bean, R [1 ]
Doré, O [1 ]
机构：
[1] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
来源：
PHYSICAL REVIEW D | 2003年 / 68卷 / 02期
关键词：
D O I：
10.1103/PhysRevD.68.023515
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the implications on both background and perturbation evolution of introducing a Chaplygin gas component in the universe's ingredients. We perform likelihood analyses using wide-ranging, SN1a, CMB and large scale structure observations to assess whether such a component could be a genuine alternative to a cosmological constant, Lambda. We find that the current data favors behavior in an adiabatic Chaplygin gas that is akin to a cosmological constant.
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页数：8
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