MHD and multi-species studies of astrophysical outflows

天体物理外流的 MHD 和多物种研究

• 批准号: 84088408
• 负责人: Privatdozent Dr. Horst Fichtner
• 金额: --
• 依托单位: Institut für Theoretische Physik IV: Weltraum- und Astrophysik
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/84088408?language=en
• 关键词: MHD; multi; species; studies; astrophysical

With this continuation project we will, based on our previous work, pursue three research paths. First, we will apply the self-consistent wave-driven model for the turbulent plasma of the expanding solar corona, that we have implemented in the CRONOS code, to an improved simulation of coronal mass ejections (CMEs) and their interaction with the solar wind as well as which each other. Second, we will extend the modelling of the plasma dynamics above the coronal base by coupling it, via an explicit relation between the initial wave spectrum and photospheric magnetic structures, to the lower solar atmosphere. Special attention will be given to photospheric magnetic flux tubes that constitute a very useful concept with which more complex magnetic structures can be formed. And, third, we will adapt the CRONOS code such that the astrophysical scenario of a cosmic ray-driven magnetized galactic wind can be simulated. With these research activities the project remains tightly connected to other projects as well as to all three main plasma physical topics of the Research Unit.

对于这个续展项目，我们将在以前工作的基础上，探索三条研究道路。首先，我们将应用我们在Cronos程序中实现的扩张日冕湍流等离子体的自洽波驱动模型，来改进对日冕物质抛射(CME)及其与太阳风的相互作用以及相互作用的模拟。其次，我们将通过初始波谱和光球磁结构之间的明确关系，将日冕底部上方的等离子体动力学模型耦合到较低的太阳大气。将特别注意光球磁通量管，它构成了一个非常有用的概念，利用它可以形成更复杂的磁结构。第三，我们将修改Cronos代码，以便能够模拟宇宙射线驱动的磁化银河风的天体物理场景。在这些研究活动中，该项目仍然与其他项目以及研究股的所有三个主要等离子体物理专题密切相关。