Probing dark energy with the cosmic microwave background:: Projected constraints from the Wilkinson Microwave Anisotropy Probe and Planck

被引：24

作者：

Balbi, A

Baccigalupi, C

Perrotta, F

Matarrese, S

Vittorio, N

机构：

[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[2] Ist Nazl Fis Nucl, Sez Roma 2, I-00133 Rome, Italy

[3] SISSA, ISAS, I-34014 Trieste, Italy

[4] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

[5] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 588卷 / 01期

关键词：

cosmic microwave background; cosmology : observations; cosmology : theory equation of state;

D O I：

10.1086/375360

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the accuracy attainable by forthcoming space-based observations of the cosmic microwave background (CMB) temperature and polarization anisotropy in constraining the dark energy density parameter Omega(Q) and equation of state w(Q) = p(Q)/rho(Q). Despite degeneracies among parameters, it is possible for high-precision observations such as those from the Wilkinson Microwave Anisotropy Probe and Planck to provide interesting information on the nature of the dark energy. Furthermore, we show that imposing a flat universe constraint makes it possible to obtain tight limits in the space of dark energy parameters even from the CMB alone.

引用

页码：L5 / L8

页数：4

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