Investigating the associations between solar flares and magnetic complexity of active regions
文献类型:期刊论文
作者 | Oloketuyi, Jacob2,3,4; Liu Y(刘煜)2,4; Elmhamdi, Abouazza1 |
刊名 | NEW ASTRONOMY |
出版日期 | 2023-05 |
卷号 | 100 |
ISSN号 | 1384-1076 |
关键词 | Solar flares Sunspots Solar cycle Data analysis |
DOI | 10.1016/j.newast.2022.101972 |
产权排序 | 第3完成单位 |
文献子类 | Article |
英文摘要 | It is generally believed that solar activities are closely linked with magnetic fields on the solar surface. To learn more about how solar flares are produced in relation to solar magnetic configurations, we examined a total of 37,741 soft-X ray solar flare events observed by a series of GOES satellites. The flare and sunspot data catalogued by NOAA were obtained from 1996 July through 2018 December, covering solar cycles 23 and 24. The inves-tigated flares database consists of 38.26% B-, 55.52% C-, 5.78%M-and 0.44% X-class. In accordance with the Hale magnetic complexity categorisation system, a total of 33,562 sunspot groups comprised of 30.65% alpha-, 57.7%beta-,8.69% beta gamma, and 2.96% -beta gamma delta-type active regions were counted based on their daily appearances, from the same source and period. The Multi-Taper and cross-correlations analyses were adopted in carrying out the investigation using their daily numbers. Our findings reveal that B-flares are negatively correlated with all the sunspot groups, in contrast to other flare classes that are positively correlated and synchronous. The beta-sunspot and C-flares are found to exhibit the typical 11-year solar cycle, including the double-peaks feature during solar maximum. Correspondingly, the measured daily occurrence rates of beta-sunspot and C-flares were the highest during the studied two solar cycles. Meanwhile, a total of 22,121 flare events were observed to be occurring concurrently with sunspot groups, out of which 10,019 flare events were found associated with beta-sunspot, from which 5,378 happened to be C-class, the highest number obtained, followed by 4,164 with B-class. The X-flares recorded 2 events with alpha-sunspot group, the least recorded in the studied period. We also confirm that the beta gamma delta-group is more likely to produce any class of flare. However, constrained by their formation rates, resulting in the beta-group producing the most flares by number. Periodicities of 9.9, 10.67, and 9.9 years were obtained for alpha-, beta-, and complex (beta gamma-and-beta gamma delta) respectively while 4.1-6.5, 10.67, 11.2 and 10.64 years were obtained for B-, C-, M -and-X flares. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS |
WOS关键词 | INTERMEDIATE-TERM PERIODICITIES ; CORONAL INDEX ; CYCLES 22 ; CLASSIFICATION ; SPECTRUM ; OSCILLATIONS ; NANOFLARES ; DEPENDENCE ; BEHAVIOR ; SUNSPOTS |
资助项目 | CAS-TWAS Presidents Fellowship ; National Science Foundation of China ; Deanship of Scientific Research at King Saud University ; [NSFC 11533009] ; [RG-1440-092] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000903963000002 |
资助机构 | CAS-TWAS Presidents Fellowship ; National Science Foundation of China ; Deanship of Scientific Research at King Saud University ; [NSFC 11533009] ; [RG-1440-092] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25757] |
专题 | 云南天文台_选址与日冕观测组 |
通讯作者 | Oloketuyi, Jacob |
作者单位 | 1.Department of Physics and Astronomy, King Saud University, Riyadh 11451, Saudi Arabia 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; 3.Department of Physics, Bamidele Olumilua University of Education, Science and Technology, Ikere-Ekiti, Nigeria; 4.School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China; |
推荐引用方式 GB/T 7714 | Oloketuyi, Jacob,Liu Y,Elmhamdi, Abouazza. Investigating the associations between solar flares and magnetic complexity of active regions[J]. NEW ASTRONOMY,2023,100. |
APA | Oloketuyi, Jacob,Liu Y,&Elmhamdi, Abouazza.(2023).Investigating the associations between solar flares and magnetic complexity of active regions.NEW ASTRONOMY,100. |
MLA | Oloketuyi, Jacob,et al."Investigating the associations between solar flares and magnetic complexity of active regions".NEW ASTRONOMY 100(2023). |
入库方式: OAI收割
来源:云南天文台
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