Explaining the dark matter small-scale crisis with spectral distortions

该项目旨在解释暗物质的性质，并为所谓的小规模危机提供解决方案。“冷暗物质”模型为在最大尺度上观测宇宙提供了极佳的契合性。然而，它似乎与目前对矮小星系等小结构如何形成的理解相冲突。该项目预计将确定由于对这一小规模危机的不同解决方案而导致的宇宙微波背景(CMB)光子黑体光谱的扭曲。预计的结果是打开一条观测路径，用未来的CMB观测来测试这些解决方案。该项目将对粒子物理学和天体物理学/天文学作出重大贡献，并将推动澳大利亚在基础科学方面的知识基础超越澄清冷暗物质的小尺度问题这一眼前目标。

This project aims to explain the nature of dark matter and provide a solution to the so-called small-scale crisis. The "cold dark matter" model provides an excellent fit to observations of the universe on the largest scales. Yet, it appears to be in conflict with current understanding of how small structures such as dwarf galaxies form. This project expects to determine the distortions to the blackbody spectrum of the cosmic microwave background (CMB) photons due to different solutions to this small-scale crisis. The expected outcome is to open an observational pathway to test these solutions with the future CMB observations. This project will provide significant contribution to both particle physics and astrophysics/astronomy, and will advance Australia’s knowledge base in fundamental science beyond the immediate goal of clarifying small-scale problems of cold dark matter.