WMAP constraints on low redshift evolution of dark energy

被引：333

作者：

Jassal, HK

Bagla, JS

Padmanabhan, T

机构：

[1] Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India

[2] Harish Chandra Res Inst, Allahabad 211019, Uttar Pradesh, India

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 356卷 / 01期

关键词：

cosmic microwave background; cosmological parameters;

D O I：

10.1111/j.1745-3933.2005.08577.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The conceptual difficulties associated with a cosmological constant have led to the investigation of alternative models in which the equation of state parameter, w=p/rho, of the dark energy evolves with time. We show that combining the supernova type Ia observations with the constraints from WMAP observations restricts large variation of rho(z) at low redshifts. The combination of these two observational constraints is stronger than either one. The results are completely consistent with the cosmological constant as the source of dark energy

引用

页码：L11 / L16

页数：6

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