TITLE:
Seasonal Variation Analysis for Solar Activity Influence on “Planetarische Kennziffer” (Kp) Index during Solar Cycle 23
AUTHORS:
Magda Mohb-Eldin Farghaly, Sara Said Khodairy, Assem Abd-Elfattah Tharwat, Mohamed Adel Abdulaziz Sharaf, Mervat Awad, Rabab Helal Abdelhamid
KEYWORDS:
Geomagnetic Activity, Solar Activity, Solar Cycle 23 Sunspot Area, Kp Index
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.15 No.3,
August
8,
2025
ABSTRACT: In this research paper, we explore how the K index changes in connection with shifts in solar activity throughout Solar Cycle 23. We examine indicators of solar activity such as sunspot numbers, radio solar flux (measured at 10.7 cm), and sunspot area to understand their impact on the K index. This study is notable for providing comprehensive information on these characteristics to offer a clearer picture of how fluctuations in solar activity relate to variations in the K index. By analyzing data from the peak of Solar Cycle 23—specifically when the sunspot area exceeds 500 micro-hemispheres—we observe a clear correlation between the F10.7 index and the Kp index. The findings demonstrate consistent associations between the Kp index and solar flux levels over time, suggesting that solar flux may serve as a reliable indicator of disturbances in Earth’s geomagnetic field. The research covers the authors’ understanding of the interaction between solar activity and geomagnetic conditions, which is crucial for predicting space weather and mitigating its effects on Earth’s technological systems. The knowledge gained from this research highlights the importance of monitoring solar flux and sunspot activity to forecast periods of heightened activity during solar cycles.