Observing dark energy dynamics with supernova, microwave background and galaxy clustering
Observing dark energy dynamics with supernova, microwave background and galaxy clustering
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DOI：
10.1103/physrevd.73.063521
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发表时间：
2005-11
影响因子：
5
通讯作者：
J. Xia;Gong-Bo Zhao;Bo Feng;Hong Li;Xinmin Zhang
中科院分区：
文献类型：
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作者：
J. Xia;Gong-Bo Zhao;Bo Feng;Hong Li;Xinmin Zhang
观测暗能量动力学是当前暗能量研究的重要方面。在本文中，我们进行了一个全球性的分析，从目前的观测暗能量的属性的约束。我们特别注意暗能量扰动的影响。利用SNIa（157金样品）、WMAP和SDSS的数据，我们发现最适合的暗能量模型是状态方程穿越-1的动力学模型。然而，标准的{lambda}CDM模型仍然是一个很好的适合目前的数据和证据的动态目前不是很强。我们还考虑了最近发布的超新星遗产调查的SNIa数据的限制。
Observing dark energy dynamics is the most important aspect of the current dark energy research. In this paper we perform a global analysis of the constraints on the property of dark energy from the current observations. We pay particular attention to the effects of dark energy perturbations. Using the data from SNIa (157 gold sample), WMAP, and SDSS we find that the best fitting dark energy model is given by the dynamical model with the equation of state crossing -1. Nevertheless the standard {lambda}CDM model is still a good fit to the current data and evidence for dynamics is currently not very strong. We also consider the constraints with the recent released SNIa data from Supernova Legacy Survey.