Analyzing Dominant 13.5 and 27 day Periods of Solar Terrestrial Interaction:A New Insight into Solar Cycle Activities

作     者：Rissnalin Syiemlieh Manashee Adhikary Prasanta K Panigrahi Eeshankur Saikia Rissnalin Syiemlieh;Manashee Adhikary;Prasanta K Panigrahi;Eeshankur Saikia

作者机构：Department of Applied SciencesGauhati UniversityAssam 781014India Complex Photonic SystemsMESA+Institute for NanotechnologyUniversity of TwenteP.O.Box 2177500 AE EnschedeThe Netherlands Department of Physical SciencesIndian Institute of Science Education and ResearchKolkata 741246India 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2022年第22卷第8期

页      面：63-73页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：MOTA for providing a fellowship under the NFST project IISER,Kolkata for providing all necessary support 

主　　题：(Sun:)solar wind (Sun:)sunspots (Sun:)solar-terrestrial relation (Sun:)activity methods:data analysis 

摘      要：Our analysis presents an explanation of the Sun–Earth coupling mechanism during declining phase of a solar cycle,and how the dominant 13.5 and 27 day periods play roles in the coupling mechanism which led to intense terrestrial magnetic storms during this declining phase compared to the rising phase of a solar ***,it is observed that while the 27 day period gets strongly modulated in the rising phase,the 13.5 day period modulation is more prominent during the declining *** is suggested that out of the 27 and 13.5 day periods of Sun–Earth interaction,the preferred period of modulation happens to be the one which is more dominant for the less random or quieter system participating in the *** is reported for the first time that the 13.5 day period is more prominent in the Sun–Earth interaction during the declining phase of a solar cycle,as it is the most dominant period of Earth s magnetic system,which happens to be more persistent as a dynamical system and hence quieter or more receptive than the Sun.