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Li, XD; Li, S; Wang, S; Zhang, WS; Huang, QG; Li, M; Li, XD (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
Probing cosmic acceleration by using the SNLS3 SNIa dataset
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
语种英语
关键词Agegraphic Dark Energy Baryon Acoustic-oscillations Hubble-space-telescope Yang-mills Condensate Bvri Light Curves Cosmological Constant Ia Supernovae Data Release Constraints Model
摘要We probe the cosmic acceleration by using the recently released SNLS3 sample of 472 type Ia supernovae. Combining this type Ia supernovae dataset with the cosmic microwave background anisotropy data from the Wilkinson Microwave Anisotropy Probe 7-yr observations, the baryon acoustic oscillation results from the Sloan Digital Sky Survey data release 7, and the Hubble constant measurement from the Wide Field Camera 3 on the Hubble Space Telescope, we measure the dark energy equation of state w and the deceleration parameter q as functions of redshift by using the Chevallier-Polarski-Linder parametrization. Our result is consistent with a cosmological constant at 1 sigma confidence level, without evidence for the recent slowing down of the cosmic acceleration. Furthermore, we consider three binned parametrizations (w is piecewise constant in redshift z) based on different binning methods. The similar results are obtained, the ACDM model is still nicely compatible with current observations.
2011
ISSN1475-7516
期号7页码:11
学科领域Physics
收录类别SCI
项目资助者NSFC [10535060/A050207, 10975167]; Ministry of Science and Technology [2007CB815401]; Chinese Academy of Science; NSFC group [10821504] ; NSFC [10535060/A050207, 10975167]; Ministry of Science and Technology [2007CB815401]; Chinese Academy of Science; NSFC group [10821504] ; NSFC [10535060/A050207, 10975167]; Ministry of Science and Technology [2007CB815401]; Chinese Academy of Science; NSFC group [10821504] ; NSFC [10535060/A050207, 10975167]; Ministry of Science and Technology [2007CB815401]; Chinese Academy of Science; NSFC group [10821504]
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被引频次:28[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/311006/14322
专题理论物理所科研产出_SCI论文
通讯作者Li, XD (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
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Li, XD,Li, S,Wang, S,et al. Probing cosmic acceleration by using the SNLS3 SNIa dataset[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(7):11.
APA Li, XD.,Li, S.,Wang, S.,Zhang, WS.,Huang, QG.,...&Li, XD .(2011).Probing cosmic acceleration by using the SNLS3 SNIa dataset.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(7),11.
MLA Li, XD,et al."Probing cosmic acceleration by using the SNLS3 SNIa dataset".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .7(2011):11.
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