SHINE: Helicity Transport from the Solar Interior to the Corona and its Role in Flares and Coronal Mass Ejections (CMEs)
SHINE: Helicity Transport from the Solar Interior to the Corona and its Role in Flares and Coronal Mass Ejections (CMEs)
批准号:
1062054
负责人:
Rudolf Komm
金额:
$31.87万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2011
资助国家:
美国
项目状态:
已结题
起止时间:
2011-04-01 至 2015-03-31
中文摘要
首席研究员(PI)和他的研究小组将调查从太阳内部穿过光球进入日冕的螺旋度的传输,以便更好地了解螺旋度在触发太阳耀斑和日冕物质抛射(cme)中的作用。PI将对地面和天基仪器观测到的近1000个太阳活动区进行统计研究。利用他和他的团队先前开发的技术,PI将计算与这些区域相关的亚光球流的动力学螺旋度,并研究通过太阳表面爆发的螺旋度的演变。这种将太阳内部和日冕视为一个单一耦合系统的想法是创新的,具有潜在的变革性。这项跨学科的研究将对空间天气预报有直接的好处。PI和他的团队将比较光球下动能螺旋度的模式和幅度的变化,以及光球和日冕磁场的磁螺旋度与耀斑和CME活跃区域的活动,目的是更好地预测太阳耀斑和CME爆发。PI将在年度科学会议和研讨会上介绍这项研究的结果。
英文摘要
The Principal Investigator (PI) and his research team will investigate the transport of helicity from the solar interior through the photosphere and into the corona, in order to better understand the role of helicity in triggering solar flares and coronal mass ejections (CMEs). The PI will undertake a statistical study of almost 1,000 solar active regions observed by ground-based and space-based instruments. Using techniques he and his team have previously developed, the PI will calculate the kinetic helicity of subphotospheric flows associated with these regions and investigate the evolution of that helicity erupting through the solar surface. This idea of treating the solar interior and corona as a single coupled system is innovative and potentially transformative. This interdisciplinary investigation will have direct benefits to space weather forecasting. The PI and his team will compare changes in the pattern and amplitude of kinetic helicity below the photosphere, and the magnetic helicity of photospheric and coronal fields with flare and CME activity of active regions, with the goal of achieving better predictions of solar flares and CME eruptions. The PI will present the results of this research at annual scientific meetings and workshops.
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