Magnetic Evolution of Mini-Coronal Mass Ejections

被引：11
作者：
Honarbakhsh, L. [1 ]
Alipour, N. [2 ]
Safari, H. [2 ]
机构：
[1] Inst Adv Studies Basic Sci, Zanjan 4513766731, Iran
[2] Univ Zanjan, Dept Phys, Univ Blvd, Zanjan 4537138791, Iran
来源：
SOLAR PHYSICS | 2016年 / 291卷 / 03期
关键词：
Sun: magnetic reconnection; Sun: mini-CME; EXPLOSIVE EVENTS; ERUPTIONS; DIMMINGS; TRACKING; WAVES; JETS;
D O I：
10.1007/s11207-016-0858-5
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The present study investigates the relationship between mini-coronal mass ejections (mini-CMEs) and the evolution of their magnetic fluxes. An automatic detection algorithm was used to detect mini-dimmings in 171 images taken with the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). Using the difference images for the dimmings, 131 events that satisfied mini-CME signatures were selected. Changes in their magnetic structure using photospheric line-of-sight magnetograms taken with the Heliospheric and Magnetic Imager (HMI) on SDO were investigated. It was found that 27 % of the events had slight changes and 73 % showed considerable changes in magnetic flux. About 18 % of the magnetic structures evolved by cancellation and 38 % by complex flux changes.
引用
收藏
页码：941 / 952
页数：12
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