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

鉴于即将安装的低频阵列(LOFAR)将能够以前所未有的分辨率观测太阳和宇宙现象，我们提议对日冕物质抛射(CME)的源区进行磁流体动力学(MHD)模拟。我们的目标是从导致太阳环境中射电发射的宏观源区参数和微观物理过程的角度来描述射电特征。本研究将使用三个已建立的模拟代码，其中两个已经证明可以足够详细地模拟日冕物质抛射的传播。我们期望该项目将对太阳和日光层物理学作出贡献，并在几个方面进一步为LOFAR社区服务。(1)将我们的模拟结果与当前和过去的射电观测进行详细比较，将限制日球层射电发射的微物理，并允许改进现有的模型。(2)CME模拟生成的合成射电地图应有助于确定LOFAR观测策略，以探索这一新射电设施的分辨率极限。(3)模拟射电地图目录将便利对未来LOFAR观测的解释，并使其能够确定关键的物理过程和参数。

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.