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首页> 外文期刊>Astronomy letters >Electron Density Diagnostics for Various Plasma Structures of the Solar Corona Based on Fe XI–FeXIII Lines in the Range 176–207 A Measured in the SPIRIT/CORONAS-F Experiment
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Electron Density Diagnostics for Various Plasma Structures of the Solar Corona Based on Fe XI–FeXIII Lines in the Range 176–207 A Measured in the SPIRIT/CORONAS-F Experiment

机译:基于SPIRIT / CORONAS-F实验中测得的176–207 A范围内的Fe XI–FeXIII线,对太阳电晕各种等离子体结构的电子密度诊断

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摘要

The relative intensities of FeXI–Fe XIII lines in the range 176–207 A have been measured for various plasma structures of the solar corona using data from the XUV spectroheliograph of the SPIRIT instrumentation onboard the CORONAS-F satellite with an improved spectral sensitivity calibration. Electron density diagnostics of a plasma with temperatures 0.8–2.5 MK has been carried out in active regions, quiet-Sun and off-limb areas, and, for the first time, in extremely intense solar flares. The density range is (1.6–8) × 109 cm~3 for flares, (0.6–1.6) × 109 cm~3 for active regions, and 5 × 108 cm~3 for quiet-Sun areas. The calibration accuracy of the spectral sensitivity for the pectroheliograph has been analyzed based on spectral lines with density-independent intensity ratios.
机译:使用来自CORONAS-F卫星上SPIRIT仪器的XUV光谱仪的数据,通过改进的光谱灵敏度校准,对太阳电晕的各种等离子体结构测量了176–207 A范围内的FeXI–Fe XIII谱线的相对强度。已经在活动区域​​,安静的太阳和非肢体区域以及极度强烈的太阳耀斑中对温度为0.8-2.5 MK的等离子体进行了电子密度诊断。耀斑的密​​度范围为(1.6–8)×109 cm〜3,活动区域的密度范围为(0.6–1.6)×109 cm〜3,安静的太阳区域为5×108 cm〜3。基于具有密度无关强度比的谱线分析了频谱分析仪的光谱灵敏度的校准精度。

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