论文标题
附近的超新星残留物在地球上的宇宙射线通量上的贡献
The contribution of nearby supernova remnants on the cosmic ray flux at Earth
论文作者
论文摘要
我们考虑使用该场的Jansson-Farrar模型，考虑了银河宇宙射线在银河磁场中的各向异性扩散。在本文中，我们通过两种方式研究了源位置对地球上宇宙射线通量的影响：[1]通过考虑宇宙射线源的贡献不同，以不同的间隔为中心的半径半径，以及[2]，通过考虑许多特定和个体的近距离超级新星。我们的计算是使用完全三维随机方法进行的。该方法基于一组随机微分方程的数值解，相当于ITO公式，该方程描述了银河宇宙射线的传播。
We consider anisotropic diffusion of Galactic cosmic rays in the Galactic magnetic field, using the Jansson-Farrar model for the field. In this paper we investigate the influence of source position on the cosmic ray flux at Earth in two ways: [1] by considering the contribution from cosmic ray sources located in different intervals in Galacto-centric radius, and [2] by considering the contribution from a number of specific and individual close-by supernova remnants. Our calculation is performed by using a fully three-dimensional stochastic method. This method is based on the numerical solution of a set of stochastic differential equations, equivalent to Ito formulation, that describes the propagation of the Galactic cosmic rays.
