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arXiv 1004.4847astro-ph.SR
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模拟太阳极小期的慢太阳风

Modeling the slow solar wind during the solar minimum

Leon Ofman, Maxim Kramar

摘要:

在太阳活动极小期,STEREO观测表明日冕的三维结构可以用倾斜的双极磁位形很好地描述。慢太阳风采用三流体模型,包括重离子,如He II和O VI。模型初始化为偶极子磁场和球对称密度。与此模型计算得到的稳态非电位和非均匀的流光配置进行比较,立体观测的流光密度结构。SOHO/UNODC观测用于比较O VI排放模式的结果。我们讨论了这种配置中产生的太阳风的独特性质。

英文摘要:

During the solar minimum STEREO observations show that the three-dimensional structure of the solar corona can be described well by a tilted bi-polar magnetic configuration. The slow solar wind is modeled using three-fluid model that includes heavy ions, such as He II and O VI. The model is initialized with dipole magnetic field and spherically symmetric density. The resulting steady state non-potential and non-uniform streamer configuration calculated with this model is compared to STEREO observations of the streamer density structure. SOHO/UVCS observations are used to compare the O VI emission to model results. We discuss the unique properties of the solar wind produced in this configuration.

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