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arXiv 1806.04786astro-ph.CO
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来自热Sunyaev Zeldovich功率谱的宇宙学约束?

Cosmological constraints from the thermal Sunyaev Zeldovich power spectrum?

Boris Bolliet

摘要:

最新的普朗克结果的功率谱的康普顿- $y$参数是最准确的探测器的热Sunyaev Zeldovich(tSZ)效应所造成的解决和未解决的星系团。在大角度尺度上,功率谱振幅主要是由于天空中星团的统计分布,因此是物质聚集$σ_8$的间接探测,以及取决于其他宇宙学参数(如哈勃参数$h$和物质密度$Ω_m$)的角直径距离。在这里,我讨论的约束力的tSZ功率谱,根据普朗克康普顿- $y$地图数据,我们目前的理解和测量的集群内介质。

英文摘要:

The latest Planck results on the power spectrum of the Compton-$y$ parameter are the most accurate probe of the thermal Sunyaev Zeldovich (tSZ) effect caused by resolved and un-resolved clusters of galaxies. On large angular scales, the power spectrum amplitude is mostly due to the statistical distribution of clusters in the sky and therefore is an indirect probe of the clustering of matter, $σ_8$, as well as the angular diameter distance that depends on other cosmological parameters such as the Hubble parameter, $h$, and the matter density $Ω_m$. Here I discuss the constraining power of the tSZ power spectrum, in light of the Planck Compton-$y$ map data, and our current understanding and measurements of the intra-cluster medium.

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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