Cosmic Rays and the Interplanetary Magnetic Field

宇宙射线和行星际磁场

• 批准号: 9616610
• 负责人: John Bieber
• 金额: $ 71.71万
• 依托单位: Bartol Research Institute
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-03-15 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9616610&HistoricalAwards=false
• 关键词: Cosmic; Rays; Interplanetary; Magnetic; Field

This project will: (1) develop new methods for studying the acceleration and transport of solar energetic particles based upon detailed analysis of particle angular distributions; (2) characterize and understand transient anisotropies accompanying cosmic ray transient variations; (3) develop new methods to determine the geometry of interplanetary magnetic turbulence based upon measurements of magnetic field and charged particle fluctuations; (4) improve understanding of particle scattering by turbulence, ultimately aimed to achieve a useful predictive capability where particle mean free paths can be deduced from measurable properties of the turbulence; (5) evaluate the usefulness of cosmic rays as a space weather tool for remote sensing the properties of approaching solar wind disturbances; and (6) improve knowledge of geomagnetic cutoffs and charged particle motion in Earth's magnetosphere through detailed testing of model predictions against ground-based observations.

该项目将：（1）在详细分析粒子角分布的基础上，开发研究太阳高能粒子加速和输运的新方法;（2）描述和理解伴随宇宙射线瞬态变化的瞬态各向异性;（3）在测量磁场和带电粒子波动的基础上，开发确定行星际磁湍流几何形状的新方法;（4）增进对湍流粒子散射的了解，最终目的是实现一种有用的预测能力，即可以从湍流的可测量特性推导出粒子的平均自由程;（5）评价宇宙射线作为空间气象工具用于遥感即将到来的太阳风扰动特性的效用;（6）通过对地面观测的模型预测进行详细测试，提高对地磁截止和地球磁层中带电粒子运动的认识。