Transport of Cosmic Rays in the Universe

宇宙射线在宇宙中的传输

• 批准号: RGPIN-2016-06008
• 负责人: Shalchi, Andreas
• 金额: $ 2.4万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633185
• 关键词: Transport; Cosmic; Rays; Universe

To explore the interaction between energetic particles and magnetized plasmas is important in astrophysics and space science. Plasmas can be found everywhere in the universe ranging from the solar wind plasma to the interstellar and extragalactic medium. Electrically charged particles, such as cosmic rays, experience scattering if moving through the plasma due to the interaction with turbulent magnetic fields. Therefore, the particles move diffusively and a simple calculation of particle trajectories is no longer possible. Understanding the diffusion process is relevant in order to understand the propagation but also diffusive shock acceleration of cosmic rays. The latter mechanism is responsible for the creation of cosmic particles and it was mentioned in the literature that to understand the origin of cosmic rays is one of the most important problems in the physics of the 21st century.

研究高能粒子与磁化等离子体的相互作用在天体物理和空间科学中具有重要意义。等离子体可以在宇宙中的任何地方找到，从太阳风等离子体到星际和河外介质。带电粒子，如宇宙射线，如果移动通过等离子体，由于与湍流磁场的相互作用而经历散射。因此，粒子扩散地移动，并且粒子轨迹的简单计算不再是可能的。理解扩散过程对于理解宇宙射线的传播和扩散冲击加速是相关的。后一种机制负责宇宙粒子的产生，文献中提到，理解宇宙射线的起源是21世纪世纪物理学中最重要的问题之一。