Cosmic Ray Anisotropies and Density Gradients in Interplanetary Space at High Rigidities

高刚性行星际空间中的宇宙射线各向异性和密度梯度

• 批准号: 9112985
• 负责人: Derek Swinson
• 金额: $ 14.15万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-11-01 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112985&HistoricalAwards=false
• 关键词: Cosmic; Ray; Anisotropies; Density; Gradients

This proposed research will be a continuation of a study of the long term properties of cosmic ray anisotropies in interplanetary space surrounding the earth, with emphasis on the information that can be extracted from these data regarding the properties and long term variations of cosmic ray density gradients in the inner heliosphere. This work is expected to yield important information on the three-dimensional magnetic and cosmic ray profile near the earth, and on the way in which it changes when the sun's polar magnetic field gradually changes, and then reverses every eleven years. With the data obtained during the study, together with data accumulated since 1965, it will be possible to examine data for a 30-year period, including nearly three solar activity cycles. This will allow us to study the continuing evolution of the heliospheric magnetic field and its influence on high rigidity galactic cosmic radiation in the inner heliosphere.

这项拟议的研究将是围绕地球的行星际空间中宇宙射线各向异性的长期特性研究的延续，重点是可以从这些数据中提取有关内日球层中宇宙射线密度梯度的特性和长期变化的信息。 这项工作预计将提供有关地球附近三维磁场和宇宙射线轮廓的重要信息，以及当太阳极地磁场逐渐变化并每十一年反转时它的变化方式的信息。 利用研究期间获得的数据，加上自1965年以来积累的数据，将有可能检查30年的数据，包括近3个太阳活动周期。 这将使我们能够研究日光层磁场的持续演化及其对日光层内部高刚性银河宇宙辐射的影响。