Experimental Simulation of Solar Flares

太阳耀斑的实验模拟

• 批准号: 84088475
• 负责人: Professor Dr. Henning Soltwisch
• 金额: --
• 依托单位: Institut für Experimentalphysik V: Arbeitsgruppe Laser- und Plasmaphysik
• 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 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/84088475?language=en
• 关键词: Experimental; Simulation; Solar; Flares

Hot, magnetized plasma configurations often exhibit a very complex dynamical behavior due to free energy released from the magnetic field. One well-known example are Solar prominences which, after a long-lasting quasi-stationary phase, often result in spectacular eruptions like Coronal mass ejections (CMEs) that come along with intricate three-dimensional and time-dependent magnetic fields and plasma flow velocities close to the Alfvén velocity. The aim of this project is to achieve a better understanding of such events by studying the stability and dynamical behavior of a class of model configurations. To this end, experiments on a laboratory plasma discharge and numerical MHD simulations will be carried out in a concerted manner. This combined strategy will then open the possibility to investigate the influence of parameters like the initial magnetic field geometry on magnetic stability and on properties of the resulting dynamics, and, in turn, to draw conclusions for the interpretation of Solar observations.

由于磁场释放的自由能，热磁化等离子体结构通常表现出非常复杂的动力学行为。一个著名的例子是太阳日珥，它在经历了长期的准静止阶段后，通常会导致像日冕物质抛射（CME）这样的壮观喷发，并伴随着复杂的三维和时间相关的磁场以及接近阿尔文速度的等离子体流速。该项目的目的是通过研究一类模型配置的稳定性和动态行为来更好地理解此类事件。为此，实验室等离子体放电实验和磁流体力学数值模拟将协同进行。这种组合策略将开启研究初始磁场几何形状等参数对磁稳定性和由此产生的动力学特性的影响的可能性，进而得出解释太阳观测的结论。