暗物质电磁相互作用的天体探针
Celestial probes of dark matter electromagnetic interactions
中文总结 AI 辅助
该研究通过分析天体的中微子通量与加热效应，推导暗物质电磁矩的约束，发现天体可在直接搜寻失效区域提供领先约束，揭示天体俘获与其他暗物质搜寻的互补性。
中文摘要 AI 辅助
我们研究了由自旋-1/2暗物质粒子与原子核发生电磁相互作用被俘获后发生湮灭所诱导的太阳与中微子通量，以及木星和白矮星的加热效应。利用现有数据，我们推导了对电磁矩的约束，并将其与来自直接暗物质搜寻、实验室实验和天体物理观测的现有界限进行了比较。我们发现，天体在多个参数空间区域提供了领先的约束：地球对毫电荷暗物质特别敏感，而大质量白矮星在直接搜寻失去灵敏度的区域，对磁偶极矩、电荷半径和轴向形状因子（anapole moment）提供了强大的探针。我们在具有辐射产生电磁矩的狄拉克和马约拉纳暗物质的简化模型中说明了这些约束的含义，并讨论了天体俘获与其他暗物质搜寻之间的互补性。
英文摘要
We investigate the neutrino flux from the Sun and Earth, as well as the heating of Jupiter and white dwarfs, induced by the annihilation of spin-$1/2$ dark matter particles captured through their electromagnetic interactions with nuclei. Using current data, we derive constraints on the electromagnetic moments and compare them with existing bounds from direct dark matter searches, laboratory experiments, and astrophysical observations. We find that celestial bodies provide leading constraints in several regions of parameter space: the Earth is particularly sensitive to millicharged dark matter, while massive white dwarfs provide powerful probes of the magnetic dipole moment, charge radius, and anapole moment in regions where direct searches lose sensitivity. We illustrate the implications of these constraints in simplified models of Dirac and Majorana dark matter with radiatively generated electromagnetic moments, as we discuss the complementarity between capture in celestial bodies and other dark matter searches.
