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arXiv 2109.06408physics.space-phastro-ph.HEastro-ph.SRphysics.data-anphysics.plasm-ph
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日球层高能粒子库形成机制的新认识

New Insight into the Formation Mechanism of the Energetic Particle Reservoirs in the Heliosphere

H. -Q. He

摘要:

高能粒子库的概念,基本上是基于外反射边界/磁镜或扩散障碍(确定性)的存在,而不是粒子扩散传播(随机)的影响,在磁湍流的假设,已经被用来描述在空间物理学,太阳物理学和等离子体物理领域的高能粒子事件的空间扩展的衰变阶段。使用五维时间相关的福克-普朗克输运方程模拟,在这项工作中,我们证明了所谓的粒子水库自然解释和定量再现的扩散过程中的湍流磁场,而不调用的假设反射边界。我们的研究结果强烈建议,所谓的“水库”(基于确定性结构)应更名为“洪水”(基于随机扩散),这象征着一个真正的转变思想和务实的理由高能粒子和相关的等离子体现象的研究在太阳物理学和天体物理学。

英文摘要:

The concept of energetic particle reservoirs, essentially based on the assumption of the presence of outer reflecting boundaries/magnetic mirrors or diffusion barriers (deterministic) rather than on the effect of particle diffusive propagation (stochastic) in magnetic turbulence, has been used for decades to describe the space-extended decay phases of energetic particle events within the fields of space physics, solar physics, and plasma physics. Using five-dimensional time-dependent Fokker-Planck transport equation simulations, in this work we demonstrate that the so-called particle reservoirs are naturally explained and quantitatively reproduced by diffusion processes in turbulent magnetic fields, without invoking the hypothesis of reflecting boundaries. Our results strongly suggest that the so-called "reservoir" (based on deterministic structure) should be renamed "flood" (based on stochastic diffusion), which symbolizes an authentic shift in thinking and in pragmatic rationale for the studies of energetic particles and relevant plasma phenomena in heliophysics and in astrophysics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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