Precise measurements of primordial power spectrum with 21 cm fluctuations

被引：38

作者：

Kohri, Kazunori ^{[1
,2
]}

Oyama, Yoshihiko ^{[1
]}

Sekiguchi, Toyokazu ^{[3
]}

Takahashi, Tomo ^{[4
]}

机构：

[1] Grad Univ Adv Studies Sokendai, Tsukuba, Ibaraki 3050801, Japan

[2] KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan

[3] Nagoya Univ, Grad Sch Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan

[4] Saga Univ, Dept Phys, Saga 8408502, Japan

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2013年 / 10期

关键词：

power spectrum; inflation; reionization; cosmological parameters from CMBR; OBSERVATIONAL CONSTRAINTS; RUNNING-MASS; CURVATURE PERTURBATION; INFLATION MODEL; MIXED INFLATON; ART; COSMOLOGY; REIONIZATION; INDEX; SKY;

D O I：

10.1088/1475-7516/2013/10/065

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the issue of how precisely we can measure the primordial power spectrum by using future observations of 21 cm fluctuations and cosmic microwave background (CMB). For this purpose, we investigate projected constraints on the quantities characterizing primordial power spectrum: the spectral index ns, its running as and even its higher order running 13g. We show that future 21 cm observations in combinations with CMB would accurately measure above mentioned observables of primordial power spectrum. We also discuss its implications to some explicit inflationary models.

引用

页数：23

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