空间科学学报2025，Vol.45Issue(4)：881-898,18.DOI:10.11728/cjss2025.04.2025-0060
空间天气探源计划(探冕计划)
Coronal Explorer for the Sun and Nearby Stars
摘要
Abstract
We propose to launch the first Extreme-Ultraviolet(EUV)space science mission in China,the Coronal Explorer for the Sun and nearby Stars(CESS),to explore the sources of space weather both within and beyond the solar system,specifically the solar and stellar coronae.The CESS mission is de-signed to observe the Sun and nearby late-type stars from a single satellite platform.The spacecraft will operate in a 720-km-altitude sun-synchronous orbit,enabling continuous and uninterrupted solar coro-nal observations.Simultaneously,observations of nearby stars will be achieved using an alt-azimuth mount for precise pointing and long-term tracking,facilitating continuous monitoring of stellar coronae.The primary scientific objects of this mission are as follows.(1)Characterize the physical properties of the source regions of solar coronal outflows and eruptions through full-disk EUV spectroscopy of the Sun.(2)Fill the current observational gap in extrasolar EUV observations,detect stellar coronal eruptions through long-term EUV photometric and spectroscopic monitoring of the coronae of selected nearby late-type stars,and pioneer a new frontier in understanding extrasolar space weather(space weather in star-exoplanet systems).(3)Explore the role of space weather in the formation of a habitable world through point-source EUV observations of the Sun and other stars,and provide crucial clues for addressing the profound question:are we alone in the universe?To fulfill these scientific goals,the spacecraft will be equipped with four key science payloads:an EUV solar-disk spectrometer(comprising a Sun-as-a-star spectrometer and a multi-slit spectrometer with a full-disk field of view),an EUV spectroscopic corona-graph,a stellar EUV spectrometer,and a stellar EUV photometer.The CESS mission will contribute to the precise prediction of space weather in the solar system,uncover the origin of exosolar space weather,and offer crucial clues for the search for potentially habitable worlds and extraterrestrial life.关键词
极紫外辐射/日冕/星冕/空间天气/行星宜居性Key words
Extreme ultraviolet radiation/Solar corona/Stellar coronae/Space weather/Planetary habitability分类
天文与地球科学引用本文复制引用
田晖,白先勇,封莉,熊明,陈亚杰,侯振永,王亚敏..空间天气探源计划(探冕计划)[J].空间科学学报,2025,45(4):881-898,18.基金项目
国家自然科学基金项目资助(12425301) （12425301）
