Study on Particle Acceleration in Solar Flares with HESSI, "Yohkoh," and Nobeyama Radioheligograph

利用 HESSI、“Yohkoh”和 Nobeyama 射电直升机研究太阳耀斑中的粒子加速

• 批准号: 14340062
• 负责人: KOSUGI Takeo
• 金额: $ 4.86万
• 依托单位: Japan Aerospace Exploration Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340062/
• 关键词: Solar Flare; Particle Acceleration; Hard X-ray Emission; Radio Emission; Gamma-ray Emission; Satellite "Yohkoh"; Satellite RHESSI; Nobeyama Radioheliograph; 太陽フレア粒子加速; 太陽フレア硬X線放射; 太陽フレア電波放射

This study aims at unveiling the solar flare particle acceleration mechanism by detailed comparison of X-ray and gamma-ray images taken from RHESSI and Yohkoh satellites with radio images from Nobeyama Radioheliograph. In order to attain this goal, we first (i)developed MEM image synthesis software tools for RHESSI, evaluate the quality of resultant RHESSI images, and edited a catalogue of flares that Yohkoh observed, and then (ii)conducted observational and theoretical research. Essences of scientific achievement can be summarized as follows :1.A review paper of solar flare research basing upon the Yohkoh observations was published.2.Conducting detailed analysis of horizontal motions of the conjugate, hard X-ray footpoint sources with respect to the magnetic neutral line, we constructed a 3-d model of magnetic reconnection in the solar corona.3.From a theoretical and numerical study, we proposed a new scenario for energizing and trapping high-energy electrons in reconnected, collapsing magnetic loops due to the Betatron mechanism.

这项研究旨在通过RHESSI和Yohkoh卫星拍摄的X射线和伽马射线图像与Nobeama射电日像仪拍摄的射电图像的详细比较来揭示太阳耀斑粒子加速的机制。为了实现这一目标，我们首先(I)为RHESSI开发了MEM图像合成软件工具，评估了生成的RHESSI图像的质量，并编辑了Yohkoh观测到的耀斑目录，然后(Ii)进行了观测和理论研究。科学成果的实质可以概括如下：1.发表了一篇基于Yohkoh观测的太阳耀斑研究综述论文。2.详细分析了共轭硬X射线脚点源相对于磁中性线的水平运动，建立了日冕中磁重联的三维模型。3.从理论和数值研究方面，我们提出了一种新的方案，即在重新连接的、由于Beatron机制而坍塌的磁环中激发和俘获高能电子。

项目成果

Energy Release and Particle Acceleration in the Solar Atmosphere-Flares and Related Phenomena

太阳大气中的能量释放和粒子加速——耀斑及相关现象

• 发表时间: 2003
• 期刊: Advances in Space Research vol.32, No.12 (special issue)
• 作者: B.R.Dennis;T.Kosugi;R.P.Lin (Editors)
• 通讯作者: R.P.Lin (Editors)

Flare ribbon expansion and energy release rate

• DOI: 10.1086/422159
• 发表时间: 2004-08-10
• 期刊: ASTROPHYSICAL JOURNAL
• 影响因子: 4.9
• 作者: Asai, A;Yokoyama, T;Shibata, K
• 通讯作者: Shibata, K

M.Karlicky, T.Kosugi: "Acceleration and Heating Processes in Collapsing Magnetic Trap"Astronomy and Astrophysics. in press. (2004)

M.Karlicky、T.Kosugi：“坍缩磁陷阱中的加速和加热过程”天文学和天体物理学。

S.M.White, S.Krucker, K.Shibasaki, T.Yokoyama, et al.: "Radio and Hard X-ray Images of High-Energy Electrons in an X-class Solar Flare"Astrophys.J.(Letters). Vol.595. L111-L114 (2003)

S.M.White、S.Krucker、K.Shibasaki、T.Yokoyama 等人：“X 级太阳耀斑中高能电子的无线电和硬 X 射线图像”Astrophys.J.（快报）。

Energy Release and Particle Acceleration in the Solar Atmosphere-Flares and Related Phenomena ("Advances in Space Research", v.32, #12)

太阳大气中的能量释放和粒子加速——耀斑及相关现象（“空间研究进展”，第 32 卷，

• 发表时间: 2003
• 作者: B.R.Dennis;T.Kosugi;R.P.Lin (editors)
• 通讯作者: R.P.Lin (editors)