Statistical Analysis of the Monthly Activity of the Solar Flare

The study of solar flares (SF) is significant for a more understanding of the nature and dynamics of the sun as well as its impact on space weather. This paper will present a new idea by studying the monthly activity of SFs by collecting data for SFs, the flare index (FI), and the sunspots number (SSN) for the period from 1986 to 2019, which represents three solar cycles 22, 23 and 24. Extracting the monthly averages of the data shows us that the southern solar hemisphere is more active for solar flares than the northern solar hemisphere. Also, the second half of the year is more active than the first half of the three solar cycles. The most active months are March, (July or October) and November, while February was the least active. In addition, the evidence of the cross-correlation results in a strong positive relationship between the three variables. This study serves to forecast the state of the space weather during the months of the year.