观测中暗能量与暗物质相互作用的特征
Signature of the interaction between dark energy and dark matter in observations
摘要：
我们研究了暗能量与暗物质相互作用对星系团动力学的影响。这种效应是通过Layser-Irvine方程计算的，该方程描述了天体物理系统如何达到维里平衡，并被修改为包括暗相互作用。利用来自近100个据称是松弛的星系团的观测数据，我们对暗区的耦合强度进行了限制。我们将我们的结果与其他观测结果进行了比较，发现一个正的（从暗能量到暗物质的能量流的意义上）非零相互作用在几个标准差内与数据一致。
英文摘要：
We investigate the effect of an interaction between dark energy and dark matter upon the dynamics of galaxy clusters. This effect is computed through the Layser-Irvine equation, which describes how an astrophysical system reaches virial equilibrium and was modified to include the dark interactions. Using observational data from almost 100 purportedly relaxed galaxy clusters we put constraints on the strength of the couplings in the dark sector. We compare our results with those from other observations and find that a positive (in the sense of energy flow from dark energy to dark matter) non vanishing interaction is consistent with the data within several standard deviations.
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