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Investigating the associations between solar flares and magnetic complexity of active regions
Oloketuyi, Jacob1,2,3; Liu Y(刘煜)1,3; Elmhamdi, Abouazza4
发表期刊NEW ASTRONOMY
2023-05
卷号100
DOI10.1016/j.newast.2022.101972
产权排序第3完成单位
收录类别SCI
关键词Solar flares Sunspots Solar cycle Data analysis
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.

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]
项目资助者CAS-TWAS Presidents Fellowship ; National Science Foundation of China ; Deanship of Scientific Research at King Saud University ; [NSFC 11533009] ; [RG-1440-092]
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者ELSEVIER
出版地RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
WOS记录号WOS:000903963000002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]INTERMEDIATE-TERM PERIODICITIES ; CORONAL INDEX ; CYCLES 22 ; CLASSIFICATION ; SPECTRUM ; OSCILLATIONS ; NANOFLARES ; DEPENDENCE ; BEHAVIOR ; SUNSPOTS
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/25757
专题选址与日冕观测组
通讯作者Oloketuyi, Jacob
作者单位1.School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;
2.Department of Physics, Bamidele Olumilua University of Education, Science and Technology, Ikere-Ekiti, Nigeria;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China;
4.Department of Physics and Astronomy, King Saud University, Riyadh 11451, Saudi Arabia
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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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).
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