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arXiv 1107.4495astro-ph.COgr-qchep-phhep-th
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磁化LambdaCDM不均匀性和宇宙黑暗时代

Magnetized LambdaCDM inhomogeneities and the cosmic dark ages

Massimo Giovannini

摘要:

在磁化LambdaCDM方案的扰动方程的精确解。它们适用于黑暗时代,更具体地说,在重子从光子的拖曳中释放出来之后。磁化增长率的物质扰动的增长指数得到的一致性范式和假设下,暗能量不集群的红移窗口范围从时代的再电离阶段的暗能量占主导地位。从这个分析中得出的约束是定性互补和定量竞争的边界所产生的扭曲图案的分析磁化绝热模式的温度和偏振各向异性的宇宙微波背景。

英文摘要:

Exact solutions of the perturbations equations in the magnetized LambdaCDM scenario are presented. They apply during the dark ages and, more specifically, after the baryons are freed from the drag of the photons. The magnetized growth rate of matter perturbations is compared with the growth index obtained in the concordance paradigm and under the assumption that dark energy does not cluster for a redshift window ranging from the epoch of reionization to the stage of dark-energy dominance. The constraints derived from this analysis are shown to be qualitatively complementary and quantitatively competitive with the bounds stemming from the analysis of the distortion patterns induced by the magnetized adiabatic mode on the temperature and polarization anisotropies of the Cosmic Microwave Background.

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