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学科：天体物理. 空间物理学. 等离子体物理
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[Title] Investigating the associations between solar flares and magnetic complexity of active regions
影响因子：2.1
DOI码：10.1016/j.newast.2022.101972
教研室：天体物理
发表刊物：New Astronomy
关键字：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 July 1996 through December 2018,covering solar cycles 23 and 24. The investigated flares consist of B-,C-,M-,and X-class events,while sunspot groups were classified according to the Hale magnetic complexity system. Using cross-correlation and Multi-Taper Method analyses,we find that B-class flares are negatively correlated with all sunspot groups,whereas other flare classes show strong positive correlations,particularly between C-class flares and β-type sunspot groups. The results demonstrate that complex active regions (βγ and βγδ) are more likely to produce energetic flares,although their lower occurrence rates limit their total flare productivity.
合写作者：Liu Y, Elmhamdi A
第一作者：Oloketuyi J
论文编号：030
学科门类：理学
一级学科：天文学
卷号：100
页面范围：article id. 101972.
ISSN号：1384-1076
是否译文：否
发表时间：2023-05-01