Weak lensing forecasts for dark energy, neutrinos and initial conditions

被引：2

作者：

Debono, Ivan ^{[1
]}

Rassat, Anais ^{[1
]}

Refregier, Alexandre ^{[1
]}

Amara, Adam ^{[2
]}

Kitching, Thomas D. ^{[3
]}

机构：

[1] Univ Paris Diderot, CNRS, Lab AIM, CEA DSM,IRFU Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France

[2] ETH, Dept Phys, CH-8093 Zurich, Switzerland

[3] Univ Edinburgh, SUPA, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland

来源：

ANNALEN DER PHYSIK | 2010年 / 19卷 / 3-5期

关键词：

Gravitational lensing; cosmological parameters; dark energy; neutrinos; primordial power spectrum; POWER SPECTRA; INFLATION; MATTER; WMAP;

D O I：

10.1002/andp.201010438

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Weak gravitational lensing provides a sensitive probe of cosmological parameters by measuring the mass distribution and the geometry of the low redshift universe. We show how an all-sky weak lensing tomographic survey can jointly constrain different sets of cosmological parameters describing dark energy, massive neutrinos, and the primordial power spectrum. Using the Fisher matrix formalism with and without CMB priors, we examine how the constraints vary as the parameter set is enlarged. We find that weak lensing with CMB priors provides robust constraints on dark energy parameters and can simultaneously provide strong constraints on all three parameter sets. We also find that the dark energy sector is largely insensitive to the inclusion of the other cosmological sectors. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

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页码：324 / 327

页数：4

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