摘要
The super-active region AR 5395 emerged from the high latitude zone, rarely. Thephotospheric spots was a big group with complex magnetic fields, i.e., δ-structure. OnMarch 13, 1989 the AR area came to its maximum; 3589 units (1unit=10<sup>-6</sup> Hemisphere). The umbra with S polarity, which presented U-shape, sur-
出处
《天文研究与技术》
CSCD
1990年第4期28-28,共1页
Astronomical Research & Technology