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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1306.1105astro-ph.SRphysics.space-ph
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太阳顶的结构

The Structure of The Heliopause

J. J. Quenby, W. R. Webber

摘要:

旅行者1号探测了终端激波和日球顶之间的太阳风-星际介质相互作用区域,跟踪了MeV能量范围内宇宙射线激波加速异常分量的强度分布。在121.7天文单位的突然消失,这一组成部分从太阳的过渡到星际等离子体流的三个模型进行了讨论。平行于边界流动的颗粒可以穿透一个拉莫尔半径。如果边界是静止的,旅行者1号直接对这个距离进行采样。根据日鞘压力的变化,边界可能会摆动,旅行者1号随后会对这种运动的程度进行采样。最后,湍流边界层被认为是MeV粒子分布下降的距离,从而测量层内的扩散。

英文摘要:

Voyager 1 has explored the solar wind-interstellar medium interaction region between the Terminal Shock and the Heliopause, following the intensity distribution of the shock accelerated anomalous component of cosmic rays in the MeV energy range. The sudden disappearance of this component at 121.7 AU from the sun is discussed in terms of three models for the transition into the interstellar plasma flow. Particles trapped flowing parallel to the boundary may penetrate up to one Larmour radius beyond. If the boundary is stationary, Voyager 1 directly samples this distance. The boundary could flap, depending on Heliosheath pressure changes and Voyager 1 then samples the extent of this motion. Finally, a turbulent boundary layer is considered in which the MeV particle distribution falls off with distance, thus measuring diffusion within the layer.

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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