摘要
1. Introduction The AR 5395 in March, 1989 has been the most intensive active region since 20solar cycle. During the AR 5395 passing across the solar disk from 6 March to 19,March, it produced 194 optical flares, 106 X-ray events (including 11 class
出处
《天文研究与技术》
CSCD
1990年第4期91-95,共5页
Astronomical Research & Technology
