Constraining dark energy models using the lookback time to galaxy clusters and the age of the universe

被引：58

作者：

Capozziello, S

Cardone, VF

Funaro, M

Andreon, S

机构：

[1] Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, Salerno, Italy

[2] Ist Nazl Fis Nucl, Sez Napoli, Grp Collegato Salerno, I-84081 Baronissi, Salerno, Italy

[3] Univ Salerno, Dipartimento Matemat & Informat, I-84084 Salerno, Italy

[4] INAF, Osservatorio Astrofis Brera, I-20121 Milan, Italy

来源：

PHYSICAL REVIEW D | 2004年 / 70卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.70.123501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An impressive amount of different astrophysical data converges towards the picture of a spatially flat Universe undergoing today a phase of accelerated expansion. The nature of the dark energy dominating the energy content of the Universe is still unknown, and a lot of different scenarios are viable candidates to explain cosmic acceleration. Most of the methods employed to test these cosmological models are essentially based on distance measurements to a particular class of objects. A different method, based on the lookback time to galaxy clusters and the age of the Universe, is used here. In particular, we constrain the characterizing parameters of three classes of dark energy cosmological models to see whether they are in agreement with this kind of data, based on time measurements rather than distance observations.

引用

页码：123501 / 1

页数：13

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