Dependence of E ≥ 100 MeV protons on the associated flares and CMEs

• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2017,（7）
• 页码范围: 99-108
• 页数: 10页
• 语种: 英文
• DOI: 10.1088/1674-4527/17/7/73

摘要

To investigate the possible solar source of high-energy protons,correlation coefficients between the peak intensities of E ≥ 100 MeV protons,I100,and the peak flux and fluence of solar soft X-ray (SXR) emission,and coronal mass ejection (CME) linear speed in the three longitudinal areas W0-W39,W40-W70 and W71-W90 have been calculated respectively.Classical correlation analysis shows that the correlation coefficients between CME speeds and I100 in the three longitudinal areas are 0.28±0.21,0.35±0.21 and 0.04±0.30 respectively.The classical correlation coefficients between I100 and SXR peak flux in the three longitudinal areas are 0.48±0.17,0.7240.13 and 0.02±0.30 respectively,while the correlation coefficients between I100 and SXR fluence in the three longitudinal areas are 0.25±0.21,0.84±0.07 and 0.10±0.30 respectively.Partial correlation analysis shows that for solar proton events with source location in the well connected region (W40-W70),only SXR fluence cansignificantly affect the peak intensity of E ≥ 100 MeV protons,but SXR peak flux has little influence on the peak intensities of E ≥ 100 MeV protons;moreover,CME speed has no influence on the peak intensities of E ≥ 100 MeV protons.We conclude that these findings provide statistical evidence that E ≥ 100 MeV protons may be mainly accelerated by concurrent flares.