To Rain or Not to Rain: Correlating GOES Flare Class and Coronal Rain Statistics

Post-flare arcades are well-known components of solar flare evolution, which have been observed for several decades. Coronal rain, cascades catastrophically-cooled plasma, outline the loops and provide eye-catching evidence recent flare. These events acknowledged to be common, but scientific literature does not include any statistical overview documenting just how common phenomenon actually is. This study reviews Solar Dynamics Observatory Atmospheric Imaging Assembly (SDO AIA) observations 241 flares collected from Space Weather Prediction Center (SWPC) database between 2011 2018. The cover entire strength range C, M, X GOES classes, distributed evenly across SDO-observed majority Cycle 24. We find that post-flare arcade rain occurs nearly all most M-class flares, it tapers off rapidly within C-class flares. There appears a cut-off point around C5, below occurrence drops significantly. is also general positive correlation class average duration events. in appear track with sunspot number, providing potential new tool estimating, if predicting, cycle strength. Furthermore, condensations suppressed shortest-length observed, suggesting active region heating height-constrained. results open up further avenues future research, including methods estimate energy deposition gain greater insight into steady heating.