Abstract
Abstract Here we present the results of the study of the north-south (N-S) distribution and asymmetry of GOES soft X-ray (SXR) flares during solar cycle 24. The period of study includes ascending, maximum and descending phases of the cycle. During the cycle double-peaked (2011, 2014) solar maximum has occurred. The cycle peak in the year 2011 is due to B-class flares excess activity in the northern hemisphere (NH) whereas C and M class flares excess activity in the southern hemisphere (SH) supported the second peak of the cycle in 2014. The data analysis shows that the SXR flares are more pronounced in 11 to 20 degree latitudes for each hemisphere. Cumulative values of SXR flare count show northern excess during the ascending phase of the cycle. However, in the descending phase of the cycle, southern excess occurred. In the cycle a significant SH dominated asymmetry exists. Near the maximum of the cycle, the asymmetry enhances pronouncedly and reverses in sign.
Highlights
The solar activity is not uniformly distributed over the solar disk and more events occur in one or another part of the disk
To study the spatial distribution of soft X-ray (SXR) flares with respect to heliographic latitudes, we have evaluated the number of SXR flares in the interval of 10 degrees considering nine latitudinal belts for northern and southern hemispheres for the period 2008-2016
We studied the N-S distribution and asymmetry of SXR flares for solar cycle 24 for the time interval of 2008 to 2016
Summary
The solar activity is not uniformly distributed over the solar disk and more events occur in one or another part of the disk. Various studies pointed out that the asymmetry enhances near the minimum of cycle, whereas the results obtained by Temmer et al (2006) were contrary to those. Keeping all this in mind, the main objective of the paper is to study the N-S distribution and asymmetry of GOES SXR flares during current solar cycle 24.
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