White light corona during total solar eclipse on March 9, 2016

International Symposium on Sun, Earth, and Life

物理学;天文学;生物科学

Imaduddin, Irfan^1 ; Akbar, Evan I.^1,2 ; Putri, Gerhana P.^2

Astronomy Study Program, Institut Teknologi Bandung, Ganesha 10, Bandung

40132, Indonesia^1

Bosscha Observatory, Institut Teknologi Bandung, Lembang

40391, Indonesia^2

关键词: Coronal structure;    Monthly sunspot numbers;    Solar activity;    Solar corona;    Solar cycle;    Sunspot number;    Total solar eclipse;    White light;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/771/1/012008/pdf
DOI  :  10.1088/1742-6596/771/1/012008

来源: IOP

【 摘 要 】

We observed the white-light corona during the total solar eclipse of 2016 March 9 from Corong Beach, East Borneo. The solar corona is nearly circular with exception on the southern part of the Sun. Coronal structures are clearly seen. Based on the data, we obtained the Ludendorff flattening index, Nikolsky geometric flattening index, and phases of solar activity (Φ and P) are 0.129, 1.32, -0.716, and 0.573 respectively. Relation between Ludendorff and Nikolsky index, sunspot number, and phases of solar activity were discussed. We also predicted the amplitude of solar cycle 25 to be 196 ± 52 (based on 13-month smoothed monthly data) and 130 ± 42 (based on monthly sunspot number data).