Ludendorff coronal flattening index of the total solar eclipse on March 9, 2016

International Symposium on Sun, Earth, and Life

物理学;天文学;生物科学

Dani, Tiar^1 ; Priyatikanto, Rhorom^1 ; Rachman, Abdul^1

Space Science Center, National Institute of Aeronautics and Space, LAPAN, Jl. Dr. Djundjunan 133, Bandung

40173, Indonesia^1

关键词: Index values;    Maximum amplitude;    Monthly sunspot numbers;    Phase based;    Solar activity;    Solar radii;    Sunspot number;    Total solar eclipse;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/771/1/012005/pdf
DOI  :  10.1088/1742-6596/771/1/012005

来源: IOP

【 摘 要 】

Ludendorff coronal flattening index of the Total Solar Eclipse (TSE) on March 9, 2016, was calculated at various distances in solar radius. As a result, we obtained the coronal flattening index (∈ = a + b) at a distance of 2 solar radii is 0.16. The 24thsolar cycle phase based on the 2016 TSE event obtained -0.64 which showed the corona is pre-minimum type. Resulted coronal flattening index value gives a predicted maximum amplitude of the monthly sunspot number (Wmax) for the 25thsolar cycle to be 70 ± 65. Therefore, the solar activity for 25thsolar cycle predicted to be lower than the current solar cycle, which has a maximum sunspot number value of 146 in February 2014