Exploring Large-Scale Current Sheets Associated with Coronal Mass Ejections

探索与日冕物质抛射相关的大规模电流片

• 批准号: 1153226
• 负责人: Haimin Wang
• 金额: $ 16.83万
• 依托单位: New Jersey Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1153226&HistoricalAwards=false
• 关键词: Exploring; Large; Scale; Current; Sheets

The Principal Investigator (PI) will investigate the detailed dynamics and structure of plasma sheets associated with coronal mass ejections (CMEs), by analyzing extreme ultraviolet (EUV) data and hard X-ray (HXR) data from spacecraft. The PI notes that the physics of current sheets is an important component in our study of CMEs and the magnetic reconnection process, and that recent spacecraft data provide an unprecedented opportunity to advance this type of research and to address key scientific questions. To this end, the PI will specifically use this data to determine how these plasma sheets form, whether they are pre-existent or are formed only after the onset of a CME eruption, whether the plasma sheets seen in EUV and the "post-CME rays" seen in white light are the same structures, and what role these current sheets play in CME acceleration and solar flare energy release. Since magnetic reconnection is one of the fundamental processes in laboratory, space, and astrophysical plasmas, this work will enhance our theoretical understanding of a phenomenon that is crucial to multiple scientific disciplines. In the solar physics context, the magnetic energy released by reconnection events in the solar atmosphere drives space weather and a better of understanding of this process will improve the nation's space weather forecasts for the benefit of society. The project will support the professional development of a young solar physicist, and this research will have an educational impact through its incorporation into the undergraduate curriculum in classrooms at NJIT.

首席研究者（PI）将通过分析来自航天器的极端紫外线（EUV）数据和硬X射线（HXR）数据，研究与冠状质量弹出（CMES）相关的等离子体表的详细动力和结构。 PI指出，电流表的物理学是我们对CMES和磁重新连接过程的重要组成部分，并且最近的航天器数据为推进这类研究并解决关键科学问题提供了前所未有的机会。 To this end, the PI will specifically use this data to determine how these plasma sheets form, whether they are pre-existent or are formed only after the onset of a CME eruption, whether the plasma sheets seen in EUV and the "post-CME rays" seen in white light are the same structures, and what role these current sheets play in CME acceleration and solar flare energy release.由于磁重新连接是实验室，空间和天体物理等离子体中的基本过程之一，因此这项工作将增强我们对对多个科学学科至关重要的现象的理论理解。在太阳能物理环境中，太阳大气中的重新连接事件发布的磁能驱动了太空天气，并且更好地理解这一过程将改善国家的太空天气预报，以使社会受益。该项目将支持一位年轻的太阳能物理学家的专业发展，这项研究将通过将其纳入NJIT教室的本科课程中产生教育影响。