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SDO/AIA 94 Angstrom FITS Data

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DataCite Commons2024-10-07 更新2025-04-16 收录
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The SDO/AIA 94 Å Level 1 FITS Data. The 94 Å channel observes the Fe XVIII line from 6.3 MK flaring plasma. The Atmospheric Imaging Assembly (AIA) onboard Solar Dynamics Observatory (SDO) focuses on the evolution of the magnetic environment in the Sun’s atmosphere, and its interaction with embedded and surrounding plasma. The AIA investigation covers a broad range of science objectives that focus on five core research themes that both advance solar and heliospheric physics in general and provide advanced warning of coronal and inner-heliospheric disturbances of interest to the Living With a Star (LWS) program, i.e., global change, space weather, human exploration of space, and technological infrastructure in space and on Earth. AIA provides the following essential capabilities: i) A view of the entire Sun in 4k x 4k resolution (pixel size of 0.6 arcseconds), with full thermal coverage of the corona; ii) A high signal-to-noise ratio for two- to three-second exposures that reaches 100 in quiescent conditions for the low-temperature coronal-imaging channels and during flaring in the higher-temperature channels, with a dynamic range of up to 10,000; iii) Essentially uninterrupted viewing for months at a temporal cadence of 12 seconds in seven extreme UV (EUV) band passes (94, 131, 171, 193, 211, 304 and 335 Å), and 24 seconds for two UV channels (1600 and 1700 Å) band passes; iv) In special observing modes, AIA can capture images of the Sun at higher cadence while keeping within the instrument allocated telemetry by using a subset of bandpass channels, and/or using a crop table.

太阳动力学天文台(Solar Dynamics Observatory,SDO)/大气成像组件(Atmospheric Imaging Assembly,AIA)94埃一级FITS数据。该94埃通道用于观测6.3 MK(百万开尔文)耀斑等离子体中的铁十八(Fe XVIII)谱线。 搭载于太阳动力学天文台(SDO)的大气成像组件(AIA),其核心研究目标为太阳大气中磁环境的演化过程,以及其与内嵌及周围等离子体的相互作用。AIA的科学研究涵盖广泛的目标,聚焦五大核心研究主题:既推动太阳与日球层物理学的整体发展,也可为日冕及内日球层扰动提供预警,服务于“与星共生(Living With a Star,LWS)”计划的相关需求,具体包括全球气候变化、空间天气、载人航天探索,以及太空与地面技术基础设施保障。 AIA具备以下核心性能: i) 以4096×4096分辨率(像素尺寸0.6角秒)实现全日面成像,可完整覆盖日冕的热辐射波段; ii) 具备高信噪比:在低温日冕成像通道的静稳观测条件下,以及高温通道的耀斑观测过程中,2~3秒曝光的信噪比可达100,动态范围最高可达10000; iii) 可实现长达数月的近乎连续观测:7个极紫外(extreme ultraviolet,EUV)波段(94、131、171、193、211、304、335埃)的时间采样率为12秒,2个紫外(ultraviolet,UV)波段(1600、1700埃)的采样率为24秒; iv) 在特殊观测模式下,AIA可通过选取部分波段通道,或使用裁剪表,在满足仪器分配的遥测带宽限制的前提下,以更高的时间采样率获取太阳图像。

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2024-10-01
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