Role of baryons in unified dark matter models -: art. no. 101301

被引：76

作者：

Beça, LMG

Avelino, PP

de Carvalho, JPM

Martins, CJAP

机构：

[1] Univ Porto, Ctr Fis Porto, P-4169007 Oporto, Portugal

[2] Univ Porto, Dept Fis, Fac Ciencias, P-4169007 Oporto, Portugal

[3] Univ Sussex, Ctr Astron, Brighton BN1 9QJ, E Sussex, England

[4] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal

[5] Univ Porto, Dept Matemat Aplicada, Fac Ciencias, P-4169007 Oporto, Portugal

[6] Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Math Sci, Cambridge CB3 0WA, England

[7] Inst Astrophys, F-75014 Paris, France

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.67.101301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the importance of including baryons in analyses of unified dark matter scenarios, focusing on toy models involving a generalized Chaplygin gas. We determine observational constraints on this unified dark matter scenario coming from large-scale structure, type Ia supernovae and CMB data showing how this component can bring about a different behavior from the classical cold dark matter model with a cosmological constant and thus motivate further studies of this type of models. We also speculate on interesting new features which are likely to be important on nonlinear scales in this context.

引用

页数：4

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