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arXiv 0804.0110astro-phgr-qchep-th
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暗能量与暗物质相互耦合的观测约束

Observational constraints on the dark energy and dark matter mutual coupling

Chang Feng, Bin Wang, Elcio Abdalla, Ru-Keng Su

摘要:

利用182颗金型Ia超新星样本的观测数据、威尔金森微波各向异性探测器3年观测的宇宙微波背景位移参数、斯隆数字巡天的重子声学振荡测量数据和35个星系的年龄估计,对暗能量和暗物质的不同唯象相互作用模型进行了统计联合分析.包括时间相关的可观测量,我们增加了测量的灵敏度,并给出了补充的拟合结果。三个不同的数据集之间的兼容性似乎意味着暗能量和暗物质之间的耦合是一个小的正值,这满足解决符合问题和热力学第二定律的要求,与以前的估计是兼容的。

英文摘要:

We examine different phenomenological interaction models for Dark Energy and Dark Matter by performing statistical joint analysis with observational data arising from the 182 Gold type Ia supernova samples, the shift parameter of the Cosmic Microwave Background given by the three-year Wilkinson Microwave Anisotropy Probe observations, the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey and age estimates of 35 galaxies. Including the time-dependent observable, we add sensitivity of measurement and give complementary results for the fitting. The compatibility among three different data sets seem to imply that the coupling between dark energy and dark matter is a small positive value, which satisfies the requirement to solve the coincidence problem and the second law of thermodynamics, being compatible with previous estimates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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