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Three-dimensional Stokes inversion with magnetohydrostationary constraints

磁静水压约束下的三维Stokes反演

基本信息

批准号：
321818926
负责人：
Dr. Juan Manuel Borrero
金额：
--
依托单位：
Institut für Sonnenphysik (KIS)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2019-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/321818926?language=en
关键词：
Three dimensional Stokes inversion magnetohydrostationary

项目摘要

Non-potential configurations of the Solar magnetic field are characterized by the presence of large electric currents on the solar atmosphere. These configurations are early precursors of chromospheric and coronal activity. This activity manifests itself as highly energetic events like coronal mass ejections, flares, eruptions, etc, that travel through the interplanetary medium and can interrupt satellites communications and cause power blackouts that affect large populations. They can also interrupt cell phone communications, GPS tracking, and even cause delays and/or re-routing of polar flights. The goal of our proposal is to develop the first inversion code capable of inferring the real three-dimensional topology of the magnetic field in the atmosphere of the Sun in a way that is consistent with both Maxwell's equations and the magneto-hydrostatic equations. This will be achieved by using this new code to analyze spectropolarimetric data (Stokes vector) from the recently built German 1.5 meter GREGOR solar telescope located on the Canary Islands (Spain). This combination of modeling and data-analysis will allow us to correctly infer electric currents and non-potential configurations of the magnetic field, thereby greatly improving our ability to forecast energetic and explosive events that are of fundamental importance for the interplanetary medium and for the higher layers of Earth's atmosphere.The methods and techniques that will be developed should become the backbone of future space-weather predictions. Therefore a number of industries can also benefit from these studies, namely tele-communication industries, airlines and power-transmission industries.

太阳磁场的非电位结构的特点是在太阳大气中存在大电流。这些结构是色球和日冕活动的早期前兆。这种活动表现为高能量事件，如日冕物质抛射、耀斑、火山爆发等，它们通过行星际介质传播，可以中断卫星通信，导致停电，影响大量人口。它们还可以中断手机通信、GPS跟踪，甚至导致极地航班延误和/或重新安排航线。我们提议的目标是开发第一个反演代码，能够以与麦克斯韦方程和磁流体静力方程一致的方式推断太阳大气中磁场的真实三维拓扑结构。这将通过使用这个新代码来分析最近建造的位于加那利群岛（西班牙）的德国1.5米GREGOR太阳望远镜的光谱偏振数据（斯托克斯矢量）来实现。这种建模和数据分析的结合将使我们能够正确地推断磁场的电流和非电位结构，从而大大提高我们预测高能和爆炸性事件的能力，这些事件对行星际介质和地球大气层的高层具有根本的重要性。即将开发的方法和技术应该成为未来空间天气预测的支柱。因此，一些行业也可以从这些研究中受益，即电信行业、航空公司和电力传输行业。