Predicting the Solar Wind at the Parker Solar Probe Using an Empirically Driven MHD Model
Predicting the Solar Wind at the Parker Solar Probe Using an Empirically Driven MHD Model
复制标题
DOI：
10.3847/1538-4365/ab58c9
复制
发表时间：
2019-12
期刊：
影响因子：
--
通讯作者：
Tae K. Kim;N. Pogorelov;C. Arge;C. Henney;S. I. Jones-Mecholsky;S. I. Jones-Mecholsky;W. P. Smith
中科院分区：
文献类型：
--
作者：
Tae K. Kim;N. Pogorelov;C. Arge;C. Henney;S. I. Jones-Mecholsky;S. I. Jones-Mecholsky;W. P. Smith
自2018年8月12日发射以来，帕克太阳探测器（PSP）已经完成了围绕太阳的第一次和第二次轨道，在每个近日点达到了35.7个太阳半径。在这种前所未有的距离令人兴奋的新数据的预期中，我们已经模拟了全球三维日光层使用MHD模型加上半经验日冕模型，使用最好的光球磁图作为输入。我们比较我们的日光层MHD模拟结果与现场测量沿着PSP的轨迹，从其发射到完成的第二个轨道，特别强调太阳风结构周围的前两个太阳能遇到。此外，我们还展示了我们对2019年9月1日发生的第三个近日点的模型预测。MHD结果与PSP观测结果的比较为太阳风加速提供了新的见解。此外，PSP观测揭示了空军数据同化光球通量运输王-希利-阿尔奇的预测工作在整个内日光层的准确性。
Since its launch on 2018 August 12, Parker Solar Probe (PSP) has completed its first and second orbits around the Sun, having reached down to 35.7 solar radii at each perihelion. In anticipation of the exciting new data at such unprecedented distances, we have simulated the global 3D heliosphere using an MHD model coupled with a semi-empirical coronal model using the best available photospheric magnetograms as input. We compare our heliospheric MHD simulation results with in situ measurements along the PSP trajectory from its launch to the completion of the second orbit, with particular emphasis on the solar wind structure around the first two solar encounters. Furthermore, we show our model prediction for the third perihelion, which occurred on 2019 September 1. Comparison of the MHD results with PSP observations provides new insights into solar wind acceleration. Moreover, PSP observations reveal how accurately the Air Force Data Assimilative Photospheric flux Transport-Wang-Sheeley-Arge-based predictions work throughout the inner heliosphere.