The Solar-C_EUVST mission
The Solar-C_EUVST mission
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Solar-C_EUVST 任务
DOI：
10.1117/12.2528240
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
他19名
中科院分区：
文献类型：
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作者：
Shimizu T.;Imada S.;Kawate T.;Ichimoto K.;Suematsu Y.;他19名
solar -c EUVST （EUV高通量光谱望远镜）是一种太阳物理任务概念，于2018年7月被选为JAXA竞争性m级任务的候选者。卫星搭载的科学仪器EUVST是一个带有狭颚成像系统的EUV光谱仪，将首次实现从光球/色球层到日冕层的同步观测，具有无缝温度覆盖、高空间分辨率和高通量。该任务旨在为太阳物理学中最基本的问题提供一个结论性的答案：基本过程是如何导致太阳大气和太阳风的形成的，以及太阳大气是如何变得不稳定的，释放出驱动太阳耀斑和喷发的能量的。EUVST的整个仪器结构和具有扫描和倾斜精细指向能力的主镜组件正在日本开发，光谱仪和狭颚成像硬件以及来自美国和欧洲国家的科学贡献。该任务将于2025年由JAXA的Epsilon运载火箭发射并安装在太阳同步极轨道上。ISAS/JAXA与NAOJ和其他大学合作，协调当前任务定义阶段的概念研究活动。在美国和欧洲同事的大力支持下，该团队目前正在为JAXA的最终选择工作，预计将于2019年底进行。本文对该任务的概念、关键技术和最新进展进行了全面介绍。
Solar-C EUVST (EUV High-Throughput Spectroscopic Telescope) is a solar physics mission concept that was selected as a candidate for JAXA competitive M-class missions in July 2018. The onboard science instrument, EUVST, is an EUV spectrometer with slit-jaw imaging system that will simultaneously observe the solar atmosphere from the photosphere/chromosphere up to the corona with seamless temperature coverage, high spatial resolution, and high throughput for the first time. The mission is designed to provide a conclusive answer to the most fundamental questions in solar physics: how fundamental processes lead to the formation of the solar atmosphere and the solar wind, and how the solar atmosphere becomes unstable, releasing the energy that drives solar flares and eruptions. The entire instrument structure and the primary mirror assembly with scanning and tip-tilt fine pointing capability for the EUVST are being developed in Japan, with spectrograph and slit-jaw imaging hardware and science contributions from US and European countries. The mission will be launched and installed in a sun-synchronous polar orbit by a JAXA Epsilon vehicle in 2025. ISAS/JAXA coordinates the conceptual study activities during the current mission definition phase in collaboration with NAOJ and other universities. The team is currently working towards the JAXA final down-selection expected at the end of 2019, with strong support from US and European colleagues. The paper provides an overall description of the mission concept, key technologies, and the latest status.