Constraints on dark energy parameters from correlations of CMB with LSS

doi:10.1088/1475-7516/2010/04/026

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	Constraints on dark energy parameters from correlations of CMB with LSS
	Li H(李虹); Xia JQ(夏俊卿); Li, H; Xia, JQ
	2010
发表期刊	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (IF:4.734[JCR-2016],4.282[5-Year])
期号	4 页码:26
通讯作者	[Li, Hong] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li, Hong] Chinese Acad Sci, Theoret Phys Ctr Sci Facil TPCSF, Beijing 100049, Peoples R China ; [Xia, Jun-Qing] Scuola Int Super Studi Avanzati, I-34014 Trieste, Italy
文章类型	Article
摘要	In this paper, we combine the the latest observational data, including the WMAP five-year data (WMAP5), the baryon acoustic oscillations (BAO) and type Ia supernovae (SN) "union" compilation, and use the Markov Chain Monte Carlo method to determine the dark energy parameters. We pay particular attention to the Integrated Sache-Wolfe (ISW) data from the cross-correlations of cosmic microwave background (CMB) and large scale structure (LSS). In the Lambda CDM model, we find that the ISW data, as a complement to the WMAP data, could significantly improve the constraint of curvature Omega(k). We also check the improvement of constraints from the new prior on the Hubble constant and find this new prior could improve the constraint of Omega(k) by a factor of 2. Finally, we study the dynamical evolving EoS of dark energy from the current observational data. Based on the dynamical dark energy model, parameterizing as w(a) = w(0) + w(a)(1-a), we find that the Lambda CDM model remains a good fit to the current data. When taking into account the ISW data, the error bars of w(0) and w(a) could be shrunk slightly. Current constraints on the dynamical dark energy model are not conclusive. The future precision measurements are needed.
关键词	dark energy experiments integrated Sachs-Wolfe effect
学科领域	Astronomy & Astrophysics; Physics
DOI	10.1088/1475-7516/2010/04/026
URL	查看原文
收录类别	SCI ; INSPIREHEP ; ADS
语种	英语
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号	WOS:000277684600007
ADS Bibcode	2010JCAP...04..026L
ADS URL	https://ui.adsabs.harvard.edu/abs/2010JCAP...04..026L
ADS引文	https://ui.adsabs.harvard.edu/abs/2010JCAP...04..026L/citations
INSPIRE ID	852201
INSPIRE URL	https://inspirehep.net/literature/852201
引用统计	正在获取... 被引频次：17 [INSPIRE] 被引频次：18 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/240371
专题	理论物理室粒子天体物理中心
作者单位	中国科学院高能物理研究所
第一作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Li H,Xia JQ,Li, H,et al. Constraints on dark energy parameters from correlations of CMB with LSS[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2010(4):26.
APA	李虹,夏俊卿,Li, H,&Xia, JQ.(2010).Constraints on dark energy parameters from correlations of CMB with LSS.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4),26.
MLA	李虹,et al."Constraints on dark energy parameters from correlations of CMB with LSS".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .4(2010):26.