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Non-Thermal Ion Populations in the Interplanetary Space

行星际空间中的非热离子群

基本信息

批准号：
08044093
负责人：
HASEBE Nobuyuki
金额：
$ 2.94万
依托单位：
Ehime University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08044093/
关键词：
Solar Energetic Particle Galactic Cosmic Ray Solar Flar Corotating Interaction Region Coronal Mass Ejection Particle Acceleration Particle Propagation Solar Modulation 宇宙線異常成分コロナ質量放出太陽大気太陽共回転相互作用高速再結合

项目摘要

The objectives of this study is to understand the dynamics occurring in the heliosphere and to draw a global picture of the heliosphere ranging from the solar atmosphere to the boundary of the heliosphere. The simultaneous and continuous observations at multi-points in the interplanetary space have allowed us to study the compostition of non-theral ion populations, their energy spectra and the time variation in a broad range of energies between spra-thermal energy and relativistic one. The main results in this study are the following :1) The anomalous component of Ar and S in cosmic rays were observed by the collaboration of GEOTAIL and WIND satellites for the first time in the world.2) It was found that small variation of galactic cosmic ray (GCR) intensity was observed at higher latitude, suggesting that GCRs are modulated even at higher latitude.3) Energetic ions associated with Corotating Interaction Region (CIR) ion events obsserved at 1AU receive continuum energy gain even after … More passing of magnetic sector region. The intensity decreases in associated with CIR events have a good correlation with the enhancement of the ion intensity and the solar wind velocity.4) The mean free path of cosmic ray in the turbulent region at interplanetary shock is one fifths or smaller than that in the normal interplanetary space.5) The temporal variation of ion intensity accelerated in the interplanetary space depends on the heliographic latitude where events occur.6) Many low energy solar neutrons are generated by internuclear cascade processes in the solar atmosphere.8) Energetic ions accelerated at the solar flare site have characteristic abundances produced by the resonant wave-particle interactions in the flare plasma.9) The mechanism of heavy ion accelerataion by cascading Alfven waves in impulsive solar flares is suggested.10) It was shown that effective proton accelerations in the reconnection regions in the geo-magnetosphere are performed in the three characteristic regions, using test particle simulations on the spontaneous fast magnetic reconnection model.11) In the reconnection regions, the dominant acceleration occurs when a particle has a curvature drift at the shock front.The particle environment in the heliosphere as well as geomagnetosphere is remarkably influenced associated with the coronal mass ejection and particle acceleration at the solar surface. The understanding of the complex coupled system between the Sun, Interplanetary space and Planetary magnetosphere, has been deepened through this study. Less

这项研究的目的是了解日光层中发生的动态，并绘制从太阳大气层到日光层边界的日光层全球图。行星际空间多点同时连续观测使我们能够研究非热离子布居的组成、能谱以及介于喷热能和相对论能之间的大范围能量的时间变化。本文的主要研究结果如下：（1）利用GEOTAIL卫星和WIND卫星的联合观测，在国际上首次观测到宇宙线中Ar和S的异常成分;（2）在高纬度观测到银河宇宙线（GCR）强度的微小变化，表明即使在高纬度，GCR也受到调制;（3）在1AU观测到的与共转相互作用区（CIR）离子事件有关的高能离子，即使在1AU附近，也能获得连续的能量增益。 ...更多信息通过磁扇区区域。4）行星际激波湍流区宇宙线的平均自由程小于或等于正常行星际空间宇宙线平均自由程的1/5; 5）行星际空间加速离子强度随时间的变化与事件发生地的日射纬度有关。在太阳大气中，许多低能太阳中子是通过核间级联过程产生的。8）在太阳耀斑处加速的高能离子具有由耀斑等离子体中的共振波-粒子相互作用产生的特征丰度。9）阐述了脉冲太阳耀斑中级联阿尔芬波加速重离子的机制。10）结果表明，使用自发快速磁重联模型的测试粒子模拟，在地磁层重联区域中的有效质子加速在三个特征区域中进行。11）在重联区域中，日冕物质抛射和太阳表面的粒子加速对日球层和地磁层的粒子环境有显著的影响。通过这项研究，加深了对太阳、行星际空间和行星磁层之间复杂耦合系统的认识。少