摘要
利用色球Ha、TRACE/WL、SOHO/EITEUV单色像观测资料及SOHO/MDI光球磁场观测资料,对2003年10月22日太阳活动区AR0484内发生的日浪事件进行了研究.发现:(1)在Ha线心观测上,日浪包含有亮、暗2个分量,这2个分量先后出现而且并不共空间.日浪的亮分量与UV和EUV波段上观测到的喷发具有较好的同时性和共空间性.(2)日浪喷发物质沿着EUV环运动.(3)在光球层,日浪足根处的黑子和磁场有明显的变化.这些观测结果支持日浪的磁重联模型.
By analyzing the YAO/Ha, TRACE/WL, SOHO/EIT EUV filtergrams and SOHO/MDI magnetograms, two surges occurring in NOAA AR 0484 on 2003 October 22 are investigated. The main results from the data are as following: (1) Both jet-like bright and dark components were observed in the Ha surges, but the two components were neither cospatial nor simultaneous. The bright Ha features were well correlated with UV and EUV surges in both location and timing. (2) The cold and hot plasma were ejected along EUV loops. (3) At the footpoints of surges in photosphere, the sunspots and magnetic field underwent noticeable changes: emergence and/or cancellation. All observed results support the previous magnetic reconnection model.
出处
《天文学报》
CSCD
北大核心
2005年第3期273-281,共9页
Acta Astronomica Sinica
基金
国家自然科学基金(10173023
10303007)资助
关键词
太阳
色球
太阳
日冕物质抛射
太阳
磁场
太阳
活动区
sun: chromosphere, sun: coronal mass ejections (CMEs), sun: magnetic field, sun: activity
