论文标题
银河系中心作为宇宙射线的有效来源
Galactic Centre as an efficient source of cosmic rays
论文作者
论文摘要
在发现费米气泡和伽马射线发射的过量后，银河中心受到了越来越多的关注，目的是了解其在原发性宇宙射线（CRS）的起源和加速中的作用。基于扩散/重新加速模型，我们使用GalProp软件来求解宇宙射线的扩散方程，并将结果与CRS频谱进行比较，这是由于银河系中心的多个能源之间的关系和生成的扩散GEV-TEV伽马射线。我们计算了来自银河系中心的宇宙射线分布，γ射线通量，并探索其对在地球观察到的宇宙射线的光谱和化学组成的贡献。我们还讨论了核与不同星际气体模型的核相互作用的影响。
After the discovery of Fermi Bubbles and the excess of gamma-ray emission, the Galactic Centre has received increasing attention with the aim to understand its role in the origin and acceleration of primary cosmic rays (CRs). Based on a diffusion/re-acceleration model, we use the GALPROP software to solve the diffusion equation for the cosmic rays and compare the results with the CRs spectrum, motivated by relationship between several energetic sources at the Galactic Centre and the generated diffuse GeV-TeV gamma-rays. We calculate the cosmic ray distribution, gamma-ray flux from Galactic Centre and explore its contribution on the spectrum and chemical composition of cosmic rays observed at Earth. We also discuss the effects of nuclei interactions with different interstellar gas models.
