Shape parameters of the solar corona from 1991 to 2016

• 作 者: Rhorom Priyatikanto
• 机 构: AstronomyProgram,SpaceScienceCenter
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2016年12期
• 关键词: 日冕 形状参数 太阳活动周期 多项式函数 太阳黑子数 光学窗口 日食观测 数字图像 Sun： corona -- Sun： activity -- method
• 基金项目: The author thanks the observers who shared coronal images that were analyzed in this study. He also acknowledges Tiar Dani who introduced the study of solar corona structure, particularly related to t

The global structure of the solar corona observed in the optical window is governed by the global magnetic field with different characteristics over a solar activity cycle. The Ludendorff flattening index has become a popular measure of global structure o