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Chinese Journal of Space Science ›› 2018, Vol. 38 ›› Issue (4): 437-443.doi: 10.11728/cjss2018.04.437

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Relationship Between Solar Proton Events and the Associated Solar Flares

LE Guiming1,2,3, WANG Hongyan1,2,3, BAI Tienan2,3   

  1. 1. Chinese Academy of Meteorological Administration, China Meteorological Administration, Beijing 100081;
    2. Key Laboratory of Space Weather, China Meteorological Administration, Beijing 100081;
    3. National Center for Space Weather, Beijing 100081
  • Received:2017-02-27 Revised:2017-08-17 Online:2018-07-15 Published:2018-07-16

Abstract:

The Correlation Coefficients (CC) between the time integral of solar Soft X-Ray (SXR) flux and the intensities of Solar Proton Events (SPE) in 0°W-39°W, 40°W-70°W and 71°W-90°W longitudinal areas have been calculated. The results show that the CC has its largest value. The property of CC is consistent with the concept that the largest flux of flare-accelerated particles can only be observed in the longitudinal area well magnetic connected with the observer. The results suggest that solar flares contribute to the production of SPE, namely that E ≥ 10MeV protons may be accelerated by the concurrent flares at the early phases of SPE.

Key words: Solar flare, Coronal mass ejection, Solar proton event

CLC Number: