SHINE: Core and Large Scale Magnetic Structure of Coronal Mass Ejections (CMEs)

首席研究员（PI）建议系统地研究与日冕物质抛射（CME）相关的大尺度太阳磁结构及其演变。虽然大部分目标将在现有数据的情况下实现，但新的观测工具将大大有助于这项研究，例如大熊太阳观测台新开发的可见光和近红外成像磁象仪系统以及太阳动力观测台和Solar-B航天器即将提供的矢量磁图。大尺度结构的研究将使用BBSO的六站高分辨率全球Ha网络的数据，SOHO的全磁盘图像，以及未来的SDO。该项目的研究重点是CME和相关现象的太阳性质，包括它们的最终起源、前兆和近太阳演化。首先，PI将把CME和耀斑作为完整的盘事件进行观测，并综合大规模爆发特征的几个方面，绘制出耀斑/CME爆发的起始和随后的扰动。这些大规模的签名包括Ha远程增亮，远程灯丝激活，莫尔顿波，和大规模的日冕昏暗。大规模的磁拓扑结构将推导出基于此分析。 其次，提案人将利用BBSO、SDO和Solar-B的矢量磁图定量分析与耀斑和CME核心区相关的磁场快速变化。这些研究将包括分析不断变化的太阳黑子结构的光谱特性，以及对爆发事件前后的磁场结构进行三维外推。第三，PI的团队将把观测结果与一些被广泛引用的理论耀斑/CME模型进行比较，以对其进行严格的测试。这项建议还包括教育部分，因为学生将获得博士学位。在此赠款的任期内，并继续作为博士后完成该项目。

The principal investigator (PI) proposes to systematically study large-scale solar magnetic structures and their evolution associated with coronal mass ejections (CMEs). Although most of the objectives will be accomplished with data on hand, the study will be aided significantly by new observational tools, such as the newly developed imaging magnetograph systems in the visible and near-infrared (NIR) at Big Bear Solar Observatory (BBSO) and upcoming vector magnetograms to be provided by the Solar Dynamic Observatory (SDO) and Solar-B spacecraft. The study of large-scale structure will use data from BBSO's six-station high-resolution Global Ha Network, full disk images from SOHO, and in the future, SDO. The proposed study focuses on solar properties of CMEs and related phenomena, including their ultimate origin, precursors, and near-Sun evolution.First, the PI will observe CMEs and flares as full disk events and integrate several aspects of the large-scale signature of eruptions, to map out the initiation and subsequent disturbances of the flare/CME eruptions. These large-scale signatures include Ha remote brightenings, remote filament activations, Moreton waves, and large-scale coronal dimmings. Large-scale magnetic topology will be derived based on this analysis. Second, the proposers will quantitatively analyze the rapid changes of magnetic fields associated with the core region of flares and CMEs, using vector magnetograms from BBSO, SDO and Solar-B. These studies will include analysis of spectroscopic properties of changing sunspot structure, as well as 3-D extrapolation of magnetic field structure before and after the eruptive events. Third, the PI's team will compare observations with a few well-cited theoretical flare/CME models to critically test them. This proposal also has an education component, given that a student will obtain his Ph.D. during the tenure of this grant and continue as a post-doc to finish the project.