The 3B optical flare was produced within the AR 5395 on March, 15. 1989. It lo-cated at N35, W33. The sunspot group was large and had complex structure. The mainspot formed a large stripe within the AR can be clearly ...The 3B optical flare was produced within the AR 5395 on March, 15. 1989. It lo-cated at N35, W33. The sunspot group was large and had complex structure. The mainspot formed a large stripe within the AR can be clearly seen from chromosperic images.During the day, the sunspot group type was FKC, magnetic configuration BGD and展开更多
文摘The 3B optical flare was produced within the AR 5395 on March, 15. 1989. It lo-cated at N35, W33. The sunspot group was large and had complex structure. The mainspot formed a large stripe within the AR can be clearly seen from chromosperic images.During the day, the sunspot group type was FKC, magnetic configuration BGD and
