The CME source region in LOFAR related simulations: Numerical studies of Coronal Mass Ejections to prepare observations of the LOw Frequency ARay

LOFAR 相关模拟中的 CME 源区：日冕物质抛射的数值研究，以准备低频 ARay 的观测

• 批准号: 16606065
• 负责人: Professor Dr. Joachim Vogt
• 金额: --
• 依托单位: Hamburger Sternwarte
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/16606065?language=en
• 关键词: CME; source; region; LOFAR; related

In view of the forthcoming installation of the LOw Frequency ARray (LOFAR) that will allow to observe solar and cosmic phenomena with unprecedent resolution, we propose to carry out magnetohydrodynamic (MHD) simulations of the source region of coronal mass ejections (CMEs). We aim at a characterization of the radio signatures in terms of macroscopic source region parameters and microphysical processes responsible for radio emissions in the solar environment. Three established simulation codes will be used in this study, and two of them have already proven to model the propagation of CMEs in sufficient detail. We expect that this project will contribute to solar and heliospheric physics and further serve the LOFAR community in several ways. (1) Detailed comparison of our simulation results with current and past radio observations will constrain the microphysics of heliospheric radio emissions and allow to refine existing models. (2) Synthetic radio maps generated from CME simulations should help to define LOFAR observing strategies to explore the resolution limits of this new radio facility. (3) A catalogue of simulated radio maps will facilitate the interpretation of future LOFAR observations and allow to identify key physical processes and parameters.

鉴于即将安装的低频阵列射线（LOFAR），将允许观察太阳和宇宙现象与前所未有的分辨率，我们建议进行磁流体动力学（MHD）模拟的日冕物质抛射（CME）的源区。我们的目标是在宏观源区参数和微物理过程负责在太阳环境中的无线电发射的无线电特征的表征。三个既定的模拟代码将用于这项研究，其中两个已经证明，以模拟CME的传播足够详细。我们期望该项目将有助于太阳和日光层物理学，并以多种方式进一步服务于LOFAR社区。(1)我们的模拟结果与当前和过去的无线电观测的详细比较将限制日光层无线电发射的微观物理，并允许改进现有的模型。(2)CME模拟生成的合成射电图应有助于确定LOFAR观测策略，以探索这一新射电设施的分辨率极限。(3)模拟无线电地图目录将有助于解释未来的LOFAR观测，并有助于确定关键的物理过程和参数。