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arXiv 2002.08846astro-ph.CO
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中微子对宇宙大尺度结构形貌的影响

Neutrino effects on the morphology of cosmic large-scale structure

Yu Liu, Yu Yu, Hao-Ran Yu, Pengjie Zhang

摘要:

在这项工作中,我们提出了一个强大的探测中微子对宇宙大尺度结构(LSS)的影响,即,Minkowski泛函(MFs)LSS的形态可以用四种MF来描述。该工具具有很强的统计能力,对各种系统具有很强的鲁棒性,可以全面探测N点统计量的所有阶数。通过一对高分辨率的N体模拟,我们首次全面研究了中微子对LSS形貌的影响。对于理想的LSS调查体积$\sim1.73$ Gpc $^3$ / $h^3$,中微子信号主要是从空区检测到的显着水平高达$\thicksim 10σ$和$\thicksim 300σ$的CDM和总物质密度场,分别。这表明了它在未来雄心勃勃的LSS调查的数据分析中大大改善中微子质量约束的巨大潜力。

英文摘要:

In this work, we propose a powerful probe of neutrino effects on the large-scale structure (LSS) of the Universe, i.e., Minkowski functionals (MFs). The morphology of LSS can be fully described by four MFs. This tool, with strong statistical power, is robust to various systematics and can comprehensively probe all orders of N-point statistics. By using a pair of high-resolution N-body simulations, for the first time, we comprehensively studied the subtle neutrino effects on the morphology of LSS. For an ideal LSS survey of volume $\sim1.73$ Gpc$^3$/$h^3$, neutrino signals are mainly detected from void regions with a significant level up to $\thicksim 10σ$ and $\thicksim 300σ$ for CDM and total matter density fields, respectively. This demonstrates its enormous potential for much improving the neutrino mass constraint in the data analysis of up-coming ambitious LSS surveys.

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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