日地L5太阳探测工程概述  

Overview of the Lagrange-V Solar Observatory(LAVSO)

作　　者：方成[1] 丁明德[1] 陈鹏飞[1] 李川[1] 程鑫 郭洋 戴煜[1] 李臻 FANG Cheng;DING Mingde;CHEN Pengfei;LI Chuan;CHENG Xin;GUO Yang;DAI Yu;LI Zhen(School of Astronomy and Space Science,Nanjing University,Nanjing 210023,Jiangsu,China)

机构地区：[1]南京大学天文与空间科学学院,江苏南京210023

出　　处：《上海航天（中英文）》2024年第3期9-16,共8页Aerospace Shanghai（Chinese&English）

基　　金：国家自然科学基金(12333009);国家国防科技工业局民用航天“十四五”技术预先研究项目(D050101)。

摘　　要：南京大学联合中国气象局、上海航天技术研究院等单位共同建议的日地L5太阳探测工程——“羲和二号”,将在国际上首次发射一颗人造探测器至日地系统第5个拉格朗日点,通过精测矢量磁场、揭示三维爆发和精准预警预报,解答“活动区磁场的产生演化及其与太阳爆发的物理联系”和“太阳爆发的传播规律及其与灾害性空间天气的关系”这2个太阳物理和空间天气领域亟待解决的重大科学和应用问题。本文重点阐述“羲和二号”的科学与应用目标,简要介绍其科学载荷和初步方案。联合日地连线方向上的太阳探测,“羲和二号”的实施将开启我国太阳立体探测时代,拓展人类对太阳爆发机制的理解,为空间天气预警预报带来革命性突破。The space mission of Lagrange-V solar observatory(LAVSO)proposed by Nanjing University,China Meteorological Administration,and Shanghai Academy of Spaceflight Technology,which is also dubbed as“Xihe-2”,will be the first man-made probe to be launched to the fifth Lagrange point of the solar-terrestrial system.It aims to precisely measure the vector magnetic fields,reveal the three-dimensional solar eruptions and provide accurate warning and forecasting of solar activities,and thus answer the two important scientific and application problems in the fields of solar physics and space weather,i.e.,“the generation and evolution of solar magnetic fields and their connections with the solar eruptions”and“the propagation of solar eruptions and their relationships with the hazardous space weather”.In this paper,the scientific and application objectives,payloads,and preliminary plans of“Xihe-2”are overviewed.With the solar observations in the Sun-Earth direction,the implementation of“Xihe-2”will usher in the era of China’s solar stereoscopic observations,expand human’s understanding on the mechanisms of solar eruptions,and bring revolutionary breakthroughs in the research of space weather.

关 键 词：太阳活动 太阳磁场 太阳耀斑 日冕物质抛射 日地关系 

分 类 号：P182.2[天文地球—天文学] P171.3