arXiv 2205.147222022-05-29astro-ph.CO

观测对PBH作为暗物质的限制

Constraints on PBH as dark matter from observations: a review

Marc Oncins

备注：: 34 pages, 3 figures. An overview aimed at PBH interested readers who are not experts on their observational signatures. Does not aim to reference all papers published on the topic, but to briefly describe the origin and physicial reasoning of known constraints and their uncertainties, and summarise future prospects

摘要：

原始黑洞（PBH）是暗物质的一个迷人的候选者，尽管它受到了严重的限制。本次审查提出了深入研究这些观测的限制，特别是在他们的细微差别和不确定性。尽管它们的起源不同，但标准的PBH形成路径被假设为暴胀后扰动的崩溃，这应该在一定尺度上在CMB中留下可见的信号。其他限制来自微透镜测量，它严重限制了PBH作为太阳到卫星范围内的暗物质，但在较低质量范围内的结果越来越少。引力波信号和霍金辐射的PBH蒸发也是有用的探测器，但前者需要下一代实验才能使约束超出太阳质量范围，而后者则严格限制在$10^{-16} \rm M_{\odot}$以上。其他动力学和吸积的限制存在大质量的PBH。还必须小心，因为所有这些约束都可能带来不同的影响，这些影响来自单色和扩展质量分布之间的差异，以及它们的聚类程度。除了所有这些问题之外，原始黑洞仍然存在一个窗口，它是$10^{-16}$和$10^{-11} \rm M_{\odot}$之间的所有暗物质

英文摘要：

Primordial black holes (PBHs) are a fascinating candidate for being the dark matter, albeit one which has been heavily constrained. This review presents an in depth look at those observational constraints, particularly at their nuances and uncertainties. Despite their varied origins, the standard PBH formation path is assumed to be collapse of perturbations after inflation, which should leave signals visible in the CMB at certain scales. Other constraints come from microlensing surveys, which severely limit PBHs as dark matter in the solar to satellite range, but there are diminishing results in regards to lower mass ranges. Gravitational waves signals and PBH evaporation from Hawking radiation also make for useful probes, but the former requires the next generation of experiments before making constraints beyond the solar mass range, and the later is severely limited above $10^{-16} \rm M_{\odot}$. Other dynamical and accretion constraints exist for PBH of large masses. Care also has to be given, as all these constraints can carry different implications coming from differences between monochromatic and extended mass distributions, and their degree of clustering. Beyond all these issues, a window still exists for primordial black holes to be all of the dark matter between $10^{-16}$ and $10^{-11} \rm M_{\odot}$

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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英文摘要：

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