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Observational constraint on dynamical evolution of dark energy
Gong, Yungui; Cai, Rong-Gen; Chen, Yun; Zhu, Zong-Hong; Gong, YG , Chongqing Univ Posts & Telecommun, Coll Math & Phys, Chongqing 400065, Peoples R China
2010
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
期号1页码:-
摘要We use the Constitution supernova, the baryon acoustic oscillation, the cosmic microwave background, and the Hubble parameter data to analyze the evolution property of dark energy. We obtain different results when we fit different baryon acoustic oscillation data combined with the Constitution supernova data to the Chevallier-Polarski-Linder model. We find that the difference stems from the different values of Omega(m0). We also fit the observational data to the model independent piecewise constant parametrization. Four redshift bins with boundaries at z = 0.22, 0.53, 0.85 and 1.8 were chosen for the piecewise constant parametrization of the equation of state parameter w(z) of dark energy. We find no significant evidence for evolving w(z). With the addition of the Hubble parameter, the constraint on the equation of state parameter at high redshift is improved by 70%. The marginalization of the nuisance parameter connected to the supernova distance modulus is discussed.
部门归属[Gong, YG; Cai, RG] Chongqing Univ Posts & Telecommun, Coll Math & Phys, Chongqing 400065, Peoples R China; [Cai, RG] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Chen, Y; Zhu, ZH] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
关键词Hubble-space-telescope Cosmological Constant Ia Supernovae 1/r Gravity Redshift Universe Acceleration Matter Quintessence Curvature
学科领域Physics
资助者Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050] ; Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050] ; Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050] ; Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050]
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收录类别SCI
资助者Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050] ; Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050] ; Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050] ; Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10533010, 10935013, 10825313]; Ministry of Science and Technology of China[2007CB815401, 2010CB833004]; Natural Science Foundation[2009BA4050]
WOS记录号WOS:000289245200009
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被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5193
专题理论物理所1978-2010年知识产出
通讯作者Gong, YG , Chongqing Univ Posts & Telecommun, Coll Math & Phys, Chongqing 400065, Peoples R China
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Gong, Yungui,Cai, Rong-Gen,Chen, Yun,et al. Observational constraint on dynamical evolution of dark energy[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2010(1):-.
APA Gong, Yungui,Cai, Rong-Gen,Chen, Yun,Zhu, Zong-Hong,&Gong, YG , Chongqing Univ Posts & Telecommun, Coll Math & Phys, Chongqing 400065, Peoples R China.(2010).Observational constraint on dynamical evolution of dark energy.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(1),-.
MLA Gong, Yungui,et al."Observational constraint on dynamical evolution of dark energy".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .1(2010):-.
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