一项天体物理学研究发现,哈勃太空望远镜的CCD探测器所受辐射损伤与太阳周期存在显著的时间错位。1研究人员通过分析超过24年的监测数据发现,这些辐射损伤相对于太阳黑子出现或日冕物质抛出事件,存在数年的相位偏差,其中与太阳周期的错开幅度达到4.3年。1
研究采用经验拟合方法来评估和修正辐射损伤对图像质量的影响,结果表明可以校正超过99.5%的损伤效应。1然而,研究也指出,当采用物理参数更合理的拟合模型时,修正效果反而下降。1这项研究强调了太阳系不同区域辐射环境的复杂性和多样性,特别是低地轨道环境辐射特征的独特性。1
Astrophysical research has revealed a significant temporal mismatch between radiation damage sustained by the Hubble Space Telescope's CCD detectors and the solar cycle.1 The radiation damage to the instrument exhibits a phase lag of approximately 4.3 years relative to solar phenomena such as sunspots and coronal mass ejections.1 This finding emerged from analysis of the telescope's detectors, which have been monitored in low Earth orbit for over 24 years.1
Researchers have successfully developed empirical fitting models that can correct more than 99.5 percent of the radiation damage's impact on image quality.1 However, models based on physically reasonable parameters showed significantly poorer performance in compensating for these effects.1 The study underscores the complexity and diversity of the radiation environment across different regions of the solar system, particularly highlighting the intricate conditions characteristic of low Earth orbit.1
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