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arXiv 1305.6038astro-ph.SRphysics.plasm-phphysics.space-ph
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初始条件对III型太阳射电爆发电磁辐射产生的影响

The effect of initial conditions on the electromagnetic radiation generation in type III solar radio bursts

H. Schmitz, D. Tsiklauri

摘要:

进行了大量的粒子模拟的快电子束注入在背景磁化等离子体的密度分布下降。这些模拟的目的是进一步阐明一种新提出的太阳III型射电爆发产生电磁波的机制[D. Tsiklauri,Phys.Plasmas,18,052903(2011)]。使用不同的密度分布和快电子分布函数进行了数值模拟。结果表明,电磁L和R模式激发的横向电流,最初施加在系统上。在模拟过程中,没有进一步的相互作用的电子束与背景等离子体可以观察到。

英文摘要:

Extensive particle-in-cell simulations of fast electron beams injected in a background magnetised plasma with a decreasing density profile were carried out. These simulations were intended to further shed light on a newly proposed mechanism for the generation of electromagnetic waves in type III solar radio bursts [D. Tsiklauri, Phys. Plasmas, 18, 052903 (2011)]. The numerical simulations were carried out using different density profiles and fast electron distribution functions. It is shown that electromagnetic L and R modes are excited by the transverse current, initially imposed on the system. In the course of the simulations no further interaction of the electron beam with the background plasma could be observed.

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