The imprint of the interaction between dark sectors in galaxy clusters

The imprint of the interaction between dark sectors in galaxy clusters
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星系团中暗区之间相互作用的印记

DOI:
10.1088/1475-7516/2010/12/022
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发表时间:
2010
影响因子:
6.4
通讯作者:
Pavon, Diego
Pavon, Diego
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
He, Jian-Hua;Wang, Bin;Abdalla, Elcio;Pavon, Diego

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基于微扰理论,我们研究了坍塌系统中暗物质和暗能量在相互作用时如何达到动态平衡的动力学。我们发现,暗扇区之间的相互作用不能确保暗能量与暗物质完全聚集在一起。在暗能量不追踪暗物质的情况下,我们提出了一种研究球体塌缩系统结构形成的新方法。此外,我们还考察了星系团数目对暗扇区之间相互作用的依赖关系,并分析了暗能量的不均匀性如何影响星系团丰度。结果表明,星系团数目计数可以提供暗扇区相互作用和暗能量不均匀的具体特征。
Based on perturbation theory, we study the dynamics of how dark matter and dark energy in the collapsing system approach dynamical equilibrium when they are in interaction. We find that the interaction between dark sectors cannot ensure the dark energy to fully cluster along with dark matter. When dark energy does not trace dark matter, we present a new treatment on studying the structure formation in the spherical collapsing system. Furthermore we examine the cluster number counts dependence on the interaction between dark sectors and analyze how dark energy inhomogeneities affect cluster abundances. It is shown that cluster number counts can provide specific signature of dark sectors interaction and dark energy inhomogeneities.
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