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arXiv 1504.00767astro-ph.SRphysics.space-ph
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对于依赖于日经度的太阳风速度的银河系cosmic-ray强度27天变化的模拟和实验研究

Modeling and experimental study of the 27-day variation of galactic cosmic-ray intensity for a solar-wind velocity depending on heliolongitude

M. V. Alania, R. Modzelewska, A. Wawrzynczak

摘要:

本文建立了一个银河宇宙线强度随太阳风速度空间变化的三维模型。通过求解相应的麦克斯韦方程组和可变的太阳风速度,得到了一致的、无发散的行星际磁场,该磁场再现了待分析时间间隔(2007年8月24日至2008年2月28日)的现场观测实验数据。我们使用可变的太阳风和相应的磁场进行模型计算的GCR强度。结果与实验数据是兼容的,我们的模型预测和观察到的27天GCR变化之间的相关系数为0.80 - 0.05。

英文摘要:

We develop a three dimensional (3-D) model of the 27-day variation of galactic cosmic ray (GCR) intensity with a spatial variation of the solar wind velocity. A consistent, divergence-free interplanetary magnetic field is derived by solving the corresponding Maxwell equations with a variable solar wind speed, which reproduces in situ observed experimental data for the time interval to be analyzed (24 August 2007-28 February 2008). We perform model calculations for the GCR intensity using the variable solar wind and the corresponding magnetic field. Results are compatible with experimental data; the correlation coefficient between our model predictions and observed 27-day GCR variation is 0.80 0.05.

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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