Phase asynchrony between flare index and sunspot activity

• Published in: Science China. Physics, mechanics & astronomy Vol. 56; no. 10; pp. 1981 - 1986
• Main Authors: Tang, YanKe, Deng, LinHua
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2013; Springer Nature B.V
• Subjects: Astronomy; Classical and Continuum Physics; Observations and Techniques; Physics; Physics and Astronomy; Solar flares; Sunspots; 同步; 响应模型; 太阳黑子数; 太阳黑子活动; 指数和; 时间尺度; 相位关系; 耀斑活动; sunspot activity; flare index; phase asynchrony; sun
• ISSN: 1674-7348; 1869-1927
• DOI: 10.1007/s11433-013-5322-z

In this paper, the relative phase relationship between flare index and sunspot activity （sunspot numbers and sunspot areas） is investigated. It is found that （i） the flare index and sunspot activity are asynchronous in phase space at all period scales, and the former lags behind the latter, which implies our results are supported for the integral response model; （ii） their different definitions and physical meanings may be a major reason for their phase asynchrony between them, and the solar flare activity favor to be related to the magnetic complex rather than magnetic strength.