论文标题
在整个暗物质晕中产生的宇宙抗植物的扩散 - 线性银河风模型的半分析溶液
Diffusion of Cosmic Antiprotons Generated throughout the Dark Matter Halo -- A Semi-Analytical Solution for a Linear Galactic Wind Model
论文作者
论文摘要
公共Galprop代码为宇宙射线的光谱提供了完全数值的解决方案，该频谱通过圆柱扩散模型的框架中从银河平面向外指向的线性银河风传播。另外，对于线性银河风箱，我们提出了两区圆柱模型的半分析溶液，该溶液描述了整个暗物质光环中主要来源产生的宇宙射线抗抗脂子的光谱。虽然二级抗植物可以由galprop Webrun产生，但始终使用该半分析溶液作为主要的抗植物，有助于构建合适的暗物质（DM）模型，该模型可能是复杂的，然后在面对数据时进行统计分析。例如，使用获得的公式，我们通过通道$ \ text {dm dm} \ to {\ bar b} b $研究了可能的DM信号，以及其限制AMS-02抗蛋白质与蛋白质比率的约束。讨论了DM信号的指示。显示了半分析方法的优点及其与GalProp模型的比较。
The public GALPROP code gives a fully numerical solution for the spectrum of cosmic rays propagating through a linear Galactic wind directed outwards from the Galactic plane in the framework of a cylindrical diffusion model. Alternatively, for the linear Galactic wind case, we present a semi-analytical solution of the two-zone cylindrical model which describes the spectrum of cosmic-ray antiprotons produced from the primary sources throughout the dark matter halo. While the secondary antiprotons can be generated by, e.g., the GALPROP WebRun, consistently using this semi-analytical solution for the primary ones would be helpful to build a suited dark matter (DM) model, which may be sophisticated, and then to perform a statistical analysis when confronting with data. As an example, using the obtained formula, we study the possible DM signal, through the channel $\text{DM DM} \to {\bar b}b$, and its constraint from the measurement of the AMS-02 antiproton-to-proton ratio. The indication of the DM signal is discussed. The advantage of the semi-analytical approach and its comparison with the GALPROP model are presented.
