No evidence for dark energy dynamics from a global analysis of cosmological data

被引：66

作者：

Serra, Paolo ^{[1
]}

Cooray, Asantha ^{[1
]}

Holz, Daniel E. ^{[2
]}

Melchiorri, Alessandro ^{[1
,3
,4
]}

Pandolfi, Stefania ^{[1
,3
,5
]}

Sarkar, Devdeep ^{[1
,6
]}

机构：

[1] Univ Calif Irvine, Dept Phys & Astron, Ctr Cosmol, Irvine, CA 92697 USA

[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[3] Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy

[4] Univ Roma La Sapienza, Sez INFN, I-00185 Rome, Italy

[5] Univ Roma La Sapienza, Int Ctr Relativist Astrophys, I-00185 Rome, Italy

[6] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 12期

基金：

美国国家科学基金会;

关键词：

CONSTRAINTS; IA; SUPERNOVAE; UNIVERSE; LAMBDA; PROBE;

D O I：

10.1103/PhysRevD.80.121302

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use a variant of principal component analysis to investigate the possible temporal evolution of the dark energy equation of state, w(z). We constrain w(z) in multiple redshift bins, utilizing the most recent data from type Ia supernovae, the cosmic microwave background, baryon acoustic oscillations, the integrated Sachs-Wolfe effect, galaxy clustering, and weak lensing data. Unlike other recent analyses, we find no significant evidence for evolving dark energy; the data remain completely consistent with a cosmological constant. We also study the extent to which the time evolution of the equation of state would be constrained by a combination of current- and future-generation surveys, such as Planck and the Joint Dark Energy Mission.

引用

页数：5

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