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引用次数: 0
摘要
摘要 提出了一种估算太阳耀斑能量释放空间周期的方法，用于分析目前卫星观测到的耀斑日冕环弧。该方法基于对耀斑日冕弧的远紫外差分图像进行傅立叶分析。TRACE 航天器在 171 Å 频道对巴士底日耀斑的观测证明了该方法的操作。根据拟议方法确定的巴士底日耀斑能量释放的平均空间周期为 5-8 毫米，与太阳耀斑中耀斑前电流层热不稳定性的发展情景非常吻合。
A Method for Estimating the Spatial Period of Energy Release in Solar Flares
A method for estimating the spatial period of energy release in solar flares is proposed to analyze the present-day satellite observations of arcades of flare coronal loops. The method is based on the application of a Fourier analysis to the difference images of flare arcades in the far ultraviolet. The operation of the method is demonstrated with the observations of the Bastille Day flare from the TRACE spacecraft in the 171 Å channel. The mean spatial period of energy release in the Bastille Day flare determined by the proposed method is 5–8 Mm, in good agreement with the scenario for the development of thermal instability of the preflare current layer in solar flares.
期刊介绍：
Astronomy Letters is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system.
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