SHINE: Instability of Large-Scale Current Sheets, Plasmoid Formation, and Particle Acceleration in Coronal Plasmas

SHINE：大尺度电流片的不稳定性、等离子体团的形成以及日冕等离子体中的粒子加速

• 批准号: 0962698
• 负责人: Amitava Bhattacharjee
• 金额: $ 37.91万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-04-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0962698&HistoricalAwards=false
• 关键词: SHINE; Instability; Large; Scale; Current

The Principal Investigator (PI) will study magnetic reconnection as a fundamental and ubiquitous process in solar coronal plasmas. Fast magnetic reconnection is widely believed to play an important role in triggering eruptive solar flares and accelerating solar energetic particles (SEPs). Using resistive magnetohydrodynamics (MHD) and electromagnetic particle simulations, this project will investigate the connection between the so-called 'super-Alfvénic instability' (also known as the 'plasmoid instability') of extended current sheets and the onset and dynamics of eruptive flares. This effort will include studies of the saturation mechanisms for the plasmoid instability, the role of the instability in loss-of-equilibrium models, and the effect of self-consistently generated plasma turbulence. The PI will also study the relative importance of collisional and collisionless reconnection regimes, as well as the transition between them, in controlling the rapid onset of eruptive flares. He will then use fully kinetic electromagnetic particle simulations to investigate the role of magnetic reconnection and multiple plasmoid formation in accelerating particles to high energies. Finally, the PI will compare the predictions of his theory and modeling efforts with observations made by spacecraft. This project will utilize state-of-the-art high performance computing tools and develop interdisciplinary applications for the study of laboratory and space plasmas. The effort will integrate teaching and research in a university environment, involving postdoctoral research scientists and a graduate student pursuing a Ph.D. thesis. The PI will also help educate high school students in a summer institute at the University of New Hampshire known as 'Project SMART' (Science and Mathematics Achievement through Research Training). Project SMART provides exciting research experiences for local high school students in New Hampshire.

主要研究者（PI）将在太阳冠状等离子体中研究磁重新连接作为基本和无处不在的过程。该项目将研究延长的电流表和爆发耀斑的发作和动力学的所谓的super-alfvénic不稳定性（也称为“浆液不稳定性”）。 ，不稳定性在自以为是的等位基因模型中的作用还将研究相对的II碰撞和无碰撞方案，以及研究它们之间的过渡。在高能的情况下，多个浆液形成的粒子比较了他的理论的预测，并通过航天器进行的efsering和efseration。在新罕布什尔大学的夏季学院中，学生攻读博士学位。