Magnetic and dynamic evolution of an active region

被引：0
|
作者：
Régnier, S [1 ]
Solomon, J [1 ]
Vial, JC [1 ]
Amari, T [1 ]
Mickey, D [1 ]
机构：
[1] Univ Paris 11, CNRS, Inst Astrophys Spatiale, F-91405 Orsay, France
来源：
9TH EUROPEAN MEETING ON SOLAR PHYSICS: MAGNETIC FIELDS AND SOLAR PROCESSES, VOLS 1 AND 2 | 1999年 / 448卷
关键词：
sun; active region; eruptive filament; SoHO; magnetic field;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We followed, for about half a solar rotation, the dynamic evolution of a single sunspot active region (AR 8151) which exhibited a filament eruption on 12 February 1998 at 13:51 UT. For longitudinal magnetic observations, we use the MDI (SoHO) magnetograph and for vector magnetic fields we use IVM and: HSP magnetographs (Mees Solar Observatory, Hawaii). The dynamic evolution is derived from time-sequences images in the Fe XII line (195 Angstrom) from EIT (SoHO). We have analyzed CDS data to obtain diagnostics of the filament in He I at 584 Angstrom and of the sigmoidal structure in Fe XVI at 360 Angstrom. Preliminary results about the reconstruction of the magnetic field above the active region are also presented.
引用
收藏
页码：519 / 523
页数：5
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