2009-2012年和2020-2023年(太阳周期24和25的上升阶段)太阳活动参数比较研究

IF 1.8 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Astrophysics and Space Science Pub Date : 2024-08-02 DOI:10.1007/s10509-024-04344-0
P. R. Singh, Upendra Kr. Singh Kushwaha
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引用次数: 0

摘要

在本文中,我们对太阳周期24和25的上升阶段(2009-2012年和2020-2023年)的部分太阳活动参数:太阳黑子数(SSN)、太阳黑子面积(SSA)、修正日冕指数(MCI)、太阳射电通量(F10.7)、色球层复合镁Ⅱ指数和银河宇宙射线(GCRs)进行了太阳同步周期(∼27天)和日光层效应分析。对SSN、SSA、MCI、Mg II和F10.7的日数据进行小波分析,发现太阳公转周期为27天。我们使用 R Robper 方法来验证观测到的周期;在太阳周期 24 和 25 的上升阶段,接近一个太阳公转周期。在太阳周期 24 和 25 的上升阶段(2009-2012 年和 2020-2023 年),我们观测到太阳活动参数(SSN、SSA、MCI、Mg II 和 F10.7)与 GCR 的交叉相关性和时滞。我们发现,在太阳周期 25 的上升阶段,SSA 的最高时滞为 300 天,SSN 的最高时滞为 270 天。我们还发现,在太阳周期24和25的上升阶段,色球层复合Mg II指数与银河宇宙射线(GCR)的最高交叉相关值分别为0.998和0.996。我们发现色球复合镁Ⅱ指数是太阳活动指数的一个良好指标,它与SSN密切相关。
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A comparative study of solar activity parameters during the period 2009–2012 and 2020–2023 (ascending phase of solar cycles 24 and 25)

In this paper, we performed solar synodic period (∼27 days) and heliospheric effect for selected solar activity parameters: sunspot number (SSN), sunspot area (SSA), modified coronal index (MCI), solar radio flux (F10.7), chromospheric composite Mg II index and Galactic cosmic rays (GCRs), during the ascending phase of solar cycles 24 and 25 (2009–2012 and 2020 to 2023). The Wavelet analyses of daily data of SSN, SSA, MCI, Mg II, and F10.7, reveal a solar rotational period of ∼27 days. The R Robper method is used to validate the observed periods; near one solar rotational period during the ascending phase of solar cycles 24 and 25. We observed cross-correlation and time lag for solar activity parameters (SSN, SSA, MCI, Mg II, and F10.7) with GCRs during the ascending phase of solar cycles 24 and 25 (2009–2012 and 2020 to 2023). We found the highest time lag for SSA is ∼300 days, and for SSN is ∼270 days during the ascending phase of solar cycle 25. We also found the highest cross-correlation values are 0.998 and 0.996 for chromospheric composite Mg II index with Galactic cosmic rays (GCRs) during the ascending phase of solar cycle 24 and 25 respectively. We found the chromospheric composite Mg II index is a good indicator of solar activity indices and it is strongly correlated to SSN.

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来源期刊
Astrophysics and Space Science
Astrophysics and Space Science 地学天文-天文与天体物理
CiteScore
3.40
自引率
5.30%
发文量
106
审稿时长
2-4 weeks
期刊介绍: Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.
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