Scientific Objectives for the Exploration of the Boundary of Solar System
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摘要: 太阳系边际是保护人类家园的太阳系最外层的篱笆。尽管在1977已发射的“旅行者1号”（Voyager 1）和“旅行者2号”（Voyager 2）近年来已陆续抵达太阳系边际，但由于所携带载荷性能的限制，仍然留下一些悬而未决的重大科学问题。因此，太阳系边际乃至更远的星际空间还有待更有效的就位探测，一个专门的太阳系边际探测计划蕴含着巨大的科学价值。介绍了太阳系边际的定义和主要探测要素，总结了国内外太阳系边际探测的现状，包括已实施和正在论证的太阳系边际探测任务的科学目标、科学载荷配置，梳理了未来太阳系边际探测过程中关于日球物理、星际空间物理和太阳系演化方面的一些重大科学问题，并对我国未来太阳系边际自主探测任务科学目标的制定进行了展望。Abstract: The edge of Solar system is the outermost fence of the heliosphere that protects the homeland of mankind. In recent years, Voyager 1 and Voyager 2 have reached the edge, leaving some major scientific mysteries in a unresolved state because of the limits of the payload function. Therefore, a specific mission for the edge of solar system contains huge scientific value. Here we introduce the definition of the edge of solar system and the main detection elements, summarizes the current status of the missions for the outer heliosphere, including the scientific targets and the scientific payload for the missions. Some major scientific issues in heliophysics, interstellar space physics and solar system evolution, have been presented, as well as the prospects for the scientific goals for our future interstellar mission.
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Key words:
- edge of solar system /
- heliophere /
- interstellar space /
- Solar system evolution
Highlights● By analyzing and sorting out the current international and domestic status of the mission for the edge of solar system. ● We look forward to the first Chinese mission for the edge of solar system in the future，and the related scientific issues. -
图 7 中性原子墙的形成机制及分布[25]
Fig. 7 The formation mechanism and distribution of the hydrogen wall[25]
图 8 IBEX观测到的1.1 keV能量中性原子的全天分布，图中可见明亮的飘带结构
Fig. 8 The all-sky distribution of 1.1 keV energetic neutral atoms observed by IBEX showing the existence of a bright ribbon
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