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DOI | 10.1029/2020GL090426 |
Low frequency radio observations of the ‘quiet’ corona during the descending phase of sunspot cycle 24 | |
R. Ramesh; A. Kumari; C. Kathiravan; D. Ketaki; M. Rajesh; M. Vrunda | |
2020-09-09 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | We carried out a statistical study of the `quiet' solar corona during the descending phase of the sunspot cycle 24 (i.e. 2015 January ‐ 2019 May) using data obtained with the Gauribidanur RAdioheliograPH (GRAPH) at 53 MHz and 80 MHz simultaneously. Our results show that the equatorial (east‐west) diameters of the solar corona at the above two frequencies shrunk steadily. The decrease was found to be due to a gradual reduction in the coronal electron density (Ne). Independent estimates of Ne in the equatorial region of the `background' corona using white‐light coronagraph observations indicate a decline consistent with our findings. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/294002 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | R. Ramesh,A. Kumari,C. Kathiravan,等. Low frequency radio observations of the ‘quiet’ corona during the descending phase of sunspot cycle 24[J]. Geophysical Research Letters,2020. |
APA | R. Ramesh,A. Kumari,C. Kathiravan,D. Ketaki,M. Rajesh,&M. Vrunda.(2020).Low frequency radio observations of the ‘quiet’ corona during the descending phase of sunspot cycle 24.Geophysical Research Letters. |
MLA | R. Ramesh,et al."Low frequency radio observations of the ‘quiet’ corona during the descending phase of sunspot cycle 24".Geophysical Research Letters (2020). |
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