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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Self-consistent kinetic numerical simulation model for ring current particles in the Earth's inner magnetosphere
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Self-consistent kinetic numerical simulation model for ring current particles in the Earth's inner magnetosphere

机译：有条理的动力学数值模拟模型目前环粒子在地球的内部磁气圈

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摘要

A new self-consistent and kinetic model for ring current particles in the inner magnetosphere is presented. A closed set of nonlinear time evolution equations is derived that incorporates kinetic particle dynamics and self-consistent development of the electromagnetic field. The particle transport is described by a five-dimensional collisionless drift kinetic equation, in which particle trajectories are approximated by their guiding centers under the influence of a time-dependent electromagnetic field. The time evolution of the electromagnetic field follows the Maxwell equations with the feedback from particles through electric currents. A numerical simulation code solving the system of equations in a global inner magnetosphere in three spatial dimensions (or five dimensions in phase space) is developed. It is demonstrated that the propagation of magnetohydrodynamic waves can successfully be described by the present model. It is also found that the self-consistent coupling could affect the transport of energetic particles especially at low energies as well as the intensity and spatial distribution of field-aligned currents. These preliminary results suggest the importance of the self-consistent coupling in the global development of geomagnetic storms.
机译：一个新的环自洽和动力学模型当前粒子的磁气圈提出了。演化方程推导出了动态粒子动力学和自洽电磁场的发展。粒子运输所描述的是一个五维无碰撞的漂移动力学粒子轨迹方程,指导中心下的近似一个依赖于时间的电磁的影响字段。场的麦克斯韦方程通过电粒子的反馈电流。方程组在全球内在三维空间(或磁气圈五维相空间)。证明的传播吗磁流体动力波能够成功所描述的模型。自洽的耦合影响尤其是高能粒子的运输在低能量和强度field-aligned电流的空间分布。这些初步结果表明的重要性在全球的有条理的耦合发展的地磁风暴。

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