Probing dark energy anisotropy

被引：55
|
作者：
Appleby, Stephen A. [1 ]
Linder, Eric V. [1 ,2 ,3 ]
机构：
[1] Ewha Womans Univ, Inst Early Universe WCU, Seoul 120750, South Korea
[2] Berkeley Lab, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Berkeley, CA 94720 USA
来源：
PHYSICAL REVIEW D | 2013年 / 87卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
REIONIZATION; GALAXIES; ROTATION; SPECTRA; MODELS;
D O I：
10.1103/PhysRevD.87.023532
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Wide area cosmological surveys enable investigation of whether dark energy properties are the same in different directions on the sky. Cosmic microwave background observations strongly restrict any dynamical effects from anisotropy, in an integrated sense. For more local constraints we compute limits from simulated distance measurements for various distributions of survey fields in a Bianchi I anisotropic universe. We then consider the effects of fitting for line of sight properties where isotropic dynamics is assumed (testing the accuracy through simulations) and compare sensitivities of observational probes for anisotropies, from astrophysical systematics as well as dark energy. We also point out some interesting features of anisotropic expansion in Bianchi I cosmology. DOI: 10.1103/PhysRevD.87.023532
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页数：9
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