MAX '91 Coordination and Studies of Solar Activity on Timescales of Milliseconds to Years

MAX 91 毫秒至年时间尺度太阳活动的协调和研究

• 批准号: 8814367
• 负责人: Alan Kiplinger
• 金额: $ 15.26万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-01 至 1992-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8814367&HistoricalAwards=false
• 关键词: MAX; 91; Coordination; Studies; Solar

MAX91 is an observational program to study solar activity in the 1990's with emphasis on coordination of observations from existing facilities and also from new balloon, rocket and ground- based instrumentation. Accordingly, the program requires the early appointment of a solar physicist to act as the "MAX91 Coordinator." One component of this grant is for a solar physicist to assume the role of MAX91 Coordinator. The grant will effect efficient MAX91 operation by establishing reliable one-way, and modern two-way, computer-based lines of communications to the solar physics community. The Coordinator will also work closely with a solar forecaster (specifically associated with MAX91) to optimize scientific output of campaigns in response to real-time solar conditions. Three studies which encompass varying aspects of solar activity on timescales that vary over eleven orders of magnitude are also planned: Milliseconds - Seconds Three year observational program with a newly developed, high speed digital camera system. This system can observe simultaneously at three optical wavelengths with high temporal and spatial resolution: From comparisons with X-ray data, it is expected to resolve important time-of-flight effects of accelerated electrons in solar flares; this addresses fundamental properties of energy release in flares. Seconds - Hours Investigation of temporal and spectral signatures of "impulsive" and "gradual" hard X-ray bursts: This study will analyze over 4,500 hard X-ray flares to quantify the characteristic differences between the two principal types of flare behavior: impulsive and gradual. Hours - Years Investigation of an apparent 152-158 day periodicity in solar activity first discovered in gamma-ray flare production rates: From new analyses of databases which extend from 10 to 120 years in the past, it is intended to either establish or to discredit this "periodicity" as a fundamental physical property of solar activity.

MAX 91是一个研究太阳活动的观测计划 在20世纪90年代，重点是协调来自 现有的设施，也从新的气球，火箭和地面- 基于仪器。 因此，该计划要求 早期任命一位太阳物理学家担任“MAX 91 协调员很“这笔赠款的一个组成部分是用于太阳能 物理学家承担MAX 91协调员的角色。 授出 将通过建立可靠的MAX 91系统， 单向和现代双向，基于计算机的生产线， 与太阳物理学界的交流。 协调员 还将与太阳预报员密切合作（特别是 与MAX 91相关），以优化活动的科学产出 以响应实时太阳条件。 三项研究涵盖了太阳能的不同方面 在时间尺度上变化超过11个数量级的活动 还计划： 毫秒-秒 为期三年的观测计划， 高速数码相机系统。 这个系统可以观察到 同时在三个光波长下， 空间分辨率： 通过与X射线数据的比较，预计将解决 加速电子的重要飞行时间效应， 太阳耀斑;这涉及的基本属性 耀斑中的能量释放。 秒-小时 “脉冲”的时间和频谱特征的调查 和“渐变”硬X射线爆发： 这项研究将分析4,500多个硬X射线耀斑， 量化两者之间的特征差异 爆发行为的主要类型：冲动型和渐进型。 小时-年 太阳152-158天视周期的研究 在伽玛射线耀斑产生率中首次发现的活动： 根据对数据库的新分析， 在过去的几年里，它旨在建立或 不相信这种“周期性”是一种基本的物理现象， 太阳活动的性质。