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http://dx.doi.org/10.5140/JASS.2009.26.4.479

Relationship Between Solar Proton Events and Corona Mass Ejection Over the Solar Cycle 23  

Hwang, Jung-A (Solar and Space Weather Research Group, KASI)
Lee, Jae-Jin (Solar and Space Weather Research Group, KASI)
Kim, Yeon-Han (Solar and Space Weather Research Group, KASI)
Cho, Kyung-Suk (Solar and Space Weather Research Group, KASI)
Kim, Rok-Sun (Solar and Space Weather Research Group, KASI)
Moon, Yong-Jae (Dept. of Astronomy and Space Science, Kyung Hee University)
Park, Young-Deuk (Solar and Space Weather Research Group, KASI)
Publication Information
Journal of Astronomy and Space Sciences / v.26, no.4, 2009 , pp. 479-486 More about this Journal
Abstract
We studied the solar proton events (SPEs) associated with coronal mass ejections (CMEs) during the solar cycle 23 (1997-2006). Using 63 SPE dataset, we investigated the relationship among SPE, flare, and CME, and found that (1) SPE rise time and duration time depend on CME speed and the earthward direction parameter of the CME, and (2) the SPE peak intensity depends on CME speed and X-ray Flare intensity. While inspecting the relation between SPE peak intensity and the direction parameter, we found there are two groups: first group consists of large six SPEs (> 10,000 pfu at > 10 MeV proton channel of GOES satellite) and shows strong correlation (cc = 0.65) between SPE peak intensity and CME direction parameter. The second group has a weak intensity and shows poor correlation between SPE peak intensity and the direction parameter (cc = 0.01). By investigating characteristics of the first group, we found that all the SPEs are associated with very fast halo CME (> 1400km/s) and also they are mostly located at central region and within ${\pm}20^{\circ}$ latitude and ${\pm}30^{\circ}$ longitude strip.
Keywords
solar proton events; corona mass ejection; solar flare; CME direction parameter;
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